Tag Archives: coaxial cable manufacturer

Many types of LMR and RG coax cables are available in an array of configurations. Coaxial cables differ in many ways – flexibilities, shielding, weight, operating voltages and temperatures, and electric parameters among other differences.

Look Beyond the “RG” Number to Find the Right Coaxial Cable

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“RG” means “Radio Guide” and was the original military specification for coax cable back in the thirties. Coaxial Cable RG Numbers are generally just an indicator of size. The actual performance of two different RG6 coax cables can be very different. Most RG numbers refer to cables made with specific diameters. Thicker diameters typically have lower attenuation over long lengths, but also may vary in shielding, jacket type, and dielectric type. The important thing to know is what frequency signals are being transmitted through the cable, and then take an in-depth look at the detail of the cable specifications. Here’s a look at a few of the most commonly used coaxial cables.

 

Coaxial Cable DiagramRG6 Coax Cable
RG6 is one of the most common coax cables. Most of the coax cables used in homes to connect internet and TV are RG6 coax cable. This version of coax is widely used to transmit cable TV signals in homes, CCTV circuits and can transmit high bandwidth making it great as internet cable as well. RG6 coax cable is a cost-effective way to install a CCTV circuitry or set up wireless networks in small offices or apartment buildings.

RG8 Coax Cable
RG8 Coax Cable is a military grade coaxial cable. This wiring is composed of a bare copper wire with a solid low-density polyethylene dielectric and a black PVC jacket. Furthermore, our RG8 coax cable has solid protection due to its single bare copper shield within its interior. This product is capable of operating within temperatures ranging from -40°C and +80°C, allowing the cable to be used in a variety of situations. With its military-grade specifications, as approved through MIL-C-17, RG8 coax cable has a maximum operating voltage of 4,000 volts.

RG11 Coax Cable
RG11 coax cable consists of a tinned copper conductor that is resistant to corrosion and can handle a maximum of 4,000 volts. This conductor is shielded in order to reduce interference and increase durability while retaining the cable’s ability to quickly transfer data. On the outside, the cable is protected by a Type I PVC jacket in order to adhere to the military’s MIL-C-17 specifications. Its jacket is able to protect our RG11 from temperatures ranging from -40°C to 80°C. This coax cable’s military equivalent is M17/6-RG11. RG11 is typically used to transmit various types of data, including radio and video signals. Its durability also allows it to be extremely useful in situations that involve direct burial and harsh weather without risk of abrasion. However, according to MIL-C-17, its Type I PVC jacket is contaminating which means that it may weaken with age.

RG23A Coax Cable
RG23A Coax Cable is a military grade coaxial cable. The internals of this wire are unique due to the fact that it has two separate bare copper conductors. The insulation for these conductors are solid, low-density polyethylene insulation with two cores. There are also two shields as well as a PVC jacket to completely wrap this RG23A Coax Cable together. Rated for -40°C to +80°C and 3,000 maximum volts during operation, this product meets MIL-C-17 specifications.

RG174 Coax Cable
RG174 Coax Cable is 50 ohm coax cable used in a vast array of commercial applications, such as sending data signals in GPS and WAN/LAN networks. With a temperature maximum of 80°C, RG 174 loss cable also features a small, flexible diameter. Click on the links below to learn more about the different features of RG-174 cable.

RG316 Coax Cable
RG316 coax cable can be used in direct burial, radiofrequency and telecommunications applications. Often used for the transmission of radio frequency signals, RG316 cable can also be used in wireless communication, broadcast and military equipment. RG316 coax may also be used for high-frequency interconnections between PCB in telecommunications equipment. RG-316 cable is a good choice for applications like these which require good performance and stability in high-temperature environments and superior phase stability, or for applications in demanding environments or with minimal installation space. RG316 is a high-performance coaxial cable that is in accordance with MIL-DTL-17 specifications. The M17 part associated with coax RG316 is M17/113-RG316.

RG400 Coax Cable
The RG400 is a high temperature coaxial cable is used in a vast array of military and commercial applications. With a high temperature maximum of 200°C, in line with other coax cables like the RG142 Cable. This allows installation in heat sensitive environments. M17/128-RG400 is the military equivalent to the RG400 cable. The testing of the RG400 and other military coax cables are very rigorous and the specifications even more so. The RG 400 manufacturers are required to test attenuation and structural return loss by sweeping 22 different 50-ohm cables over the frequency band for which their use is recommended. The RG400 cable is also used for tactical operations and aerospace technology

Coaxicom is a US Manufacturer of RF connectors, attenuators, adapters, terminations, receptacles and other electronic components. We also provide high quality, custom cable assemblies for the space, military, transportation, medical and communications industries. To build a custom cable assembly, click here. Contact our Sales Team with your RFQ and desired delivery schedule. We provide precision performance with short leads times. To submit your quote request, click here.

The Cable Assembly of your Dreams!

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Maybe saying “Cable Assembly of your dreams” is a little silly, but when you think about everything you go through to get the right cable, it can be a huge pain in the neck. You go to a website and they have the cable type you are looking for, but available in only half the length you want. So you buy a coupler and two cables. Instead of purchasing one item, you now have 3, which is something else you didn’t want to do.

What if you go to the website and they don’t have the cable you are looking for at all and you need to buy various adapters? All you are doing is affecting the performance of an overpriced and shoddily made cable!

Thankfully, you can now build your own cable assembly with Coaxicom! The cable assembly available on the Coaxicom site is the most advanced on the internet! Get the exact cable you want, in the length you want with the connectors you want. With a custom made cable assembly, there will no longer be testing multiple cables, adapting, coupling or jumping through various hoops like you may have in the past!

 

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Semi-Rigid Cable Assemblies.

Recommended Guidelines for Design & Dimensioning of Semi-Rigid Cable Assemblies.

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Semi-Rigid Cable Assemblies Design Guidelines.

Coaxicom has been manufacturing semi-rigid cable assemblies since 1984. We have developed a number of guidelines for the design and dimensioning of cable assemblies that will provide the user with assemblies that are cost-effective, perform well, and are reliable.

We incorporate Coaxicom connectors, or those specified by the user. Some of these guidelines are summarized here, and illustrated below.

For information on cables described or other products from Coaxicom’s broad line of connectors, adapters, terminations, attenuators, phase adjusters, and cable assemblies, contact our Coaxicom Team at 866. Coaxicom (262.9426) or via email to sales@coaxicom.com.

  1. Make drawings full scale.
  2. Use tight dimensioning, but loose tolerances. Tolerances of +/-0.030″ are generally recommended. Cables (except very short ones) are slightly flexible, and can be “walked” into next higher assembly.
  3. Dimension lengths as follows: (a) Straight plugs and jacks: To the reference plane. (b) Bulkhead jacks: To the bulkhead mounting surface. (c) Right angle connectors: To the centerline of the mating surface.
  4. Avoid right angle connectors whenever possible. They are more expensive than straight connectors and perform poorly at high frequencies. Coaxicom can bend cables tightly enough so that a straight plug will have the same profile as a right angle connector.
  5. Avoid bulkhead and panel mounted connectors if possible, to preclude the need for expensive tooling to ensure correct connector orientation.
  6. Dimension straight lengths to the start of bends. A radius to the inside of the cable, and associated angle should be used to specify bends. Radii to the center- line of cables are not measurable. Dimensions that cannot be measured should be avoided.
  7. Design bend radius as large as possible, and make them identical if you can. Minimize the number of cable bends wherever possible. Design cable paths for utility, not appearance. Use gradual S bends, rather than straight runs followed by 90 degree bends.
  8. Use stress relief loops whenever possible on short cable assemblies.
  9. Avoid direct marking. Use hot-stamped, heat shrink tube.

For more tips and advice, visit Coaxicom Specifications, or email us at Sales@Coaxicom.com, or start by using Coaxicom cable assembler builder. For a quick reference product sheet, complete the info below and access an instant download. 

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SSMA and SMA RF Connectors – Center Contact Retention

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Most RF connectors require some form of internal component captivation to ensure proper mechanical integrity. The design must strike a balance with electrical performance which can be difficult to achieve with higher frequency connectors.

Epoxy and mechanical are common methods of captivation that are governed by military and industry specifications. SMA series connectors cover a wide range of captivation methods and are high frequency, average in size and very popular in the RF/microwave industry. SMA specifications per M39012 is 6 pounds axial (direct force in pounds) and 4 inch-ounces radial (torque). All SMA’s have an axial requirement but many do not have a radial. Other RF connector series have similar specifications.

 

EpoxyEpoxy  

Mainly for receptacles with tabs, slots, blunt posts and solder cups that are soldered onto a PC board. Epoxy is the preferred method when any axial or rotational movement of the center contact may break the PCB solder joint. Silver epoxy fill will improve RF leakage.

Axial – 6 lbs | Radial – 4 inch-ounces

VSWR: Very Good | RF Leakage: -60 dB

 

 

MechMechanical

Adapters, Field Replaceables and similar designs where radial movement is allowed. These connectors do not have a soldering requirement of the center contact. There are many variations of barb captivation and epoxy is sometimes used.

Axial: 6 lbs | Radial: None

VSWR: Good | RF Leakage: -75 to -100 dB

 


knurlMechanical (Barb/Knurl)

For applications that require radial captivation and low cost. This design, along with other types of enhanced mechanical captivation such as staked and special barbs have poor VSWR performance due to the excessive capacitance introduced.

Axial – 6 lbs | Radial – 4 inch-ounces

VSWR – Average to Poor | RF Leakage: -75 to -100 dB

 

 

shoulderCable Connectors

In most cases, the cable center conductor will support the soldered connector’s center contact. Small connectors and cable commonly use a shoulder design that butts two insulators against the center contact. Epoxy may be used on assemblies with very small cable. Mainly used in low frequency applications.

 

 

Other areas of captivation include “snap-in” contacts called out in some MIL specifications and precision (metrology grade) connectors that use a noryl-PPO tm or rexolite bead to support and captivate an airline.

Choosing a company that is committed to the performance you expect is critical in any successful RF coaxial endeavor. Coaxicom is known for excellent performance standards and stand behind our products with exceptional quality and customer service.

Coaxial Components Corp is a woman-owned small business and ISO 9001:2015 / AS9100D certified manufacturing facility that ships same day from a broad inventory of microwave and RF products. www.coaxicom.com, sales@coaxicom.com, 866-COAXICOM (866-262-9426)

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Mission Statement

Made in America products at economical prices and ensure uncompromising Customer satisfaction. Coaxicom’s extensive resources enable you, our Customer, to focus on your operational needs. At Coaxicom, we understand the importance of adapting our services on an ongoing basis to keep pace with our Customers’ changing needs. We continually strive to be the best every day, with each Customer we serve.

 

RF & Microwave Components

How RF & Microwave Components Will Help Juno on Jupiter

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NASA’s Juno Spacecraft carries a science payload consisting of nine instrument packages to provide unprecedented data on Jupiter’s magnetic environment, its gravitational field, the incredibly dense atmosphere & cloud cover, the interior of the planet and Jupiter’s puzzling aurora.

Juno uses it instruments to look for clues about Jupiter’s formation which will allow scientists to infer details on the solar system’s formation since Jupiter maintained its current state since the early stages of the solar system. Also, the mission sets out to determine whether Jupiter has a solid core, find out how much water is present within the planet’s dense atmosphere, & study winds that can reach more than 600 Kilometers per hour.

Juno is carrying the following scientific instruments that are explained in detail below:

  • Gravity Science – GS
  • Magnetometer – MAG
  • Microwave Radiometer – MWR
  • Jupiter Energetic Particle Detector Instrument – JEDI
  • Jovian Auroral Distributions Experiment – JADE
  • Radio and Plasma Wave Sensor – Waves
  • Ultraviolet Spectrograph
  • Jovian Infrared Auroral Mapper – JIRAM
  • JunoCam

Gravity Science

To reveal the interior structure of Jupiter, Juno makes detailed measurements of the planet’s gravitational field which will point to internal structures that are hidden by the planet’s dense atmosphere.

The experiment is a radio science experiment that involves X-Band and Ka-Band ranging from ground stations on Earth to follow the spacecraft in its orbit around the planet and detect even minute changes in the motion of the spacecraft. Local variations in gravity can act on the spacecraft in orbit and cause it to speed up or slow down – those changes in spacecraft motion can be detected using the Doppler Shift in the X and Ka band transponders used by the radio sub-system.

For the gravity experiment, the High Gain Antenna needs to be pointed directly at Earth so that Ka-Band Ranging Signals and X-Band Signals can be sent and received. The Deep Space Network has only one Station capable of providing Ka-Band uplink which is Deep Space Station 25 at DSN Goldstone.

Turnaround ranging using the Deep Space Network involves the DSN station that sends an Ka-Band signal to the spacecraft containing ranging tones that it imposes on a carrier using phase modulation. When the spacecraft receives the tones, it sends them right back via X-Band downlink. The DSN station records the timing of the ranging tones uplink and the timing of the tone’s reception order to calculate the line-of-sight distance to the spacecraft.

After processing of the data taking into account delays by the electronics on the spacecraft and the ground, atmospheric and ionospheric properties, interplanetary plasma, and relativistic effects, the ranging method has an accuracy of about one meter in the outer regions of the solar system.

Following corrections for radio signal distortion in Earth’s atmosphere, scientists will be able to use ranging data to map the gravity field of the planet and identify internal features.

The MAG instrument of Juno measures Jupiter’s magnetic field to create a detailed three-dimensional map of the Gas Giant’s magnetic environment.

Juno uses a fluxgate magnetometer developed at NASA’s Goddard Spaceflight Center that is installed on one of the three solar arrays of the spacecraft to move the instrument as far away from the spacecraft platform to avoid false readings caused by Juno’s own magnetic emissions.

MAG uses dual-fluxgate magnetometers to measure the magnetic field vector and a 3-cell scalar Helium magnetometer sensor provided by JPL is used to measure the strength of the field. An Advanced Stellar Compass provides precise attitude data for each of the sensors.

Two fluxgate magnetometers are installed on the magnetometer boom that is installed on the solar array – one is installed 9.8 meters from the spacecraft structure and the other resides 11.8m from the S/C bus and is rotated 180 degrees relative to the other sensor. The scalar Helium magnetometer is located inboard, 8.8m from the platform.

 

The two fluxgate sensors use the nonlinearity of magnetization properties for the high permeability of easily saturated ferromagnetic alloys to serve as an indicator for the local field strength. The entire Magnetometer instrument weighs 15.25 Kilograms.

Having the two fluxgate sensors installed at different distances will allow scientists to determine Juno’s magnetic field that is subtracted from the data to achieve high-precision measurements of Jupiter’s magnetic environment.

“Juno’s magnetometers will measure Jupiter’s magnetic field with extraordinary precision and give us a detailed picture of what the field looks like, both around the planet and deep within,” says Goddard’s Jack Connerney, the mission’s deputy principal investigator and head of the magnetometer team. “This will be the first time we’ve mapped the magnetic field all around Jupiter-it will be the most complete map of its kind ever obtained about any planet with an active dynamo, except, of course, our Earth.”

 

Microwave Radiometer

The MWR instrument will study the hidden structure beneath Jupiter’s cloud tops – capable of determining on the structure, movement and chemical composition to a pressure of 1,000 atmospheres which corresponds to a depth of 550 Kilometers below the cloud cover. The instrument will help determine the abundance on Water and Ammonia in the Jovian atmosphere.

MWR consists of six separate radiometers each with its own antenna and receiver that measure the radiation at six different frequencies along the orbital track of the spacecraft (600 MHz, 1.2 GHz, 2.4 GHz, 4.8 GHz, 9.6 GHz & 22 GHz). The receivers are fed by a combination of patch & slot array antennas as well as horn antennas optimized for the different wavelengths.

The MWR antennas are mounted on the outside of the Juno spacecraft. The 600 MHz antenna occupies one entire side of the hexagonal spacecraft body and is directly installed on the spacecraft platform. The 1.2, 2.4, 4.8 & 9.6 GHz antennas are installed on a separate support panel attached to another panel on the vehicle’s body. The 22 GHZ antenna is installed on the upper deck of the vehicle. All antennas are connected to the MWR electronics unit via coaxial cables or rectangular waveguides.

The 22 GHz antenna is a profiled corrugated horn with a circular-to-rectangular transition. It is made of solid aluminum and shows a low side lobe performance. The 2.4, 4.8 and 9.6 GHz antennas are waveguide slot array antennas as part of a low-volume, low-mass system. Each antenna has 8×8 slots divided into four 4×4 arrays. The two low-frequency antennas are 5×5 patch array antennas.

The MWR electronics unit has a modular design, consisting of five individual slices: a Power Distribution Unit (2 slices), a Command & Data Handling Unit, and the Housekeeping Unit (2 slices).

The Power Distribution Unit includes six power converters that are connected to the 28-volt spacecraft bus and generate voltages needed by the MWR instrument. The Command & Data Handling Unit includes a 8051 microcontroller based system that processes and executes spacecraft commands and telemetry, controls all data provided by MWR including science & housekeeping data. The system is connected to the main data system of Juno via a redundant RS-422 bus with a transfer rate of 57.6Kb/s. MWR includes a master crystal oscillator to provide precise timing data.

The Housekeeping Units make temperature measurements for radiometric calibrations and they monitor the instrument’s health & bus voltages. A total of 128 multiplexed channels are used to monitor temperature (112 channels) and bus voltages (16 channels). Inside the electronics vault, thermistors are used for temperature measurements while data on the outside of the vehicle is acquired by platinum resistive thermometers that can withstand the extreme radiation environment at Jupiter.

Jupiter Energetic Particle Detector Instrument

JEDI installation locations on Juno – Image: NASA/JHU

The JEDI instrument will measure energetic particles and their interaction with Jupiter’s magnetic field, investigating Jupiter’s polar space environment with special focus on the physics of the intense Jovian auroras. JEDI measures the energy, spectra, mass species (H, He, O, S), and angular distributions of the higher energy charged particles. The JEDI instrument weighs 6.4 Kilograms including 5 Kilograms of shielding material.

The instrument consists of three nearly identical sensors – each with six ion and six electron views that are arrayed in 12 by 160 degree fans with six 26.7° look directions. Two of those units are installed in a way so that nearly a complete 360-degree coverage normal to the spacecraft spin axis can be achieved in order to get complete pitch angle snapshots. The other sensor is aligned with the spin axis to gather complete sky-views over one spin period of 30 seconds. Each of the JEDI-270/90 units measures 23.3 by 15.9 by 16.1 centimeters while the single JEDI-180 unit is 23.3 by 16.9 by 12.8cm. JEDI sensors are self-contained, they have no additional hardware inside the electronics vault of the spacecraft.

Each JEDI Sensor includes the electron and ion sensors as well as detector preamplifiers. The sensor heads and main electronics are integrated as a single unit installed on the Juno spacecraft. The sensor heads have separate data and power interfaces with the spacecraft and run independently of each other.

Ions are examined by compact time-of-flight (TOF) by energy and TOF by MCP-Pulse-Height spectrometers that determines three TOF parameters and the energy of ions to identify Hydrogen, Oxygen, Sulfur and other ions. JEDI measures ions at energy ranges of 10keV (kilo electronvolt) to 10 MeV. Electrons from 25 keV to 1 MeV are measured using collimated solid-state detectors that provide energy data and directional distributions.

The JEDI sensor heads consist of an aperture opening, electron deflectors, start foils and anodes, a microchannel plate detector, stop anodes and foils, solid state detectors and pre-amplifiers as well as supporting electronics.

The JEDI sensor heads include TOF sections 6 centimeters across that feed the silicon solid-state detectors. The SSD array and the individual pre-amplifiers are connected to an Event Board that determines particle energies.

JEDI Sensor Design

As an ion enters the instrument, it first passes through a thin foil in the collimator (350A Aluminum) before reaching the start foil (carbon-polyamid-carbon) and generating secondary electrons. These electrons are then directed from the primary particle path to the microchannel plate detector where the Start Signal is generated for the Time of Flight measurement. A 500-Volt potential between the foil and the MCP directs the secondary electrons to the TOF detector with high accuracy (1ns dispersion in transit time). The segmented MCP anodes with two start anodes for each of the six angular segments provide data on the direction of travel of the ion.

Secondary electrons that are created as a result of the ion passing through the stop foil are again directed to the MCP and cause a Stop Signal. The time-difference between the two signals represents the time it took the ion to pass through the 6-centimeter TOF instrument.

After the stop foil, ions impact the Solid State Detectors that consist of electron and ion pixels. The SSD determines ion energy which coupled with the TOF measurement delivers ion mass and particle species data. The collimator foil is installed on a high-transmittance grid supported by stainless steel frames. The start/stop foils use a tungsten-copper frame.

Electrons entering the instrument are first decelerated by a 2.6kV potential which is part of the TOF system for ion measurements.

After passing the stop foil, the electrons are again accelerated by a 2.6kV potential. Reaching the SSD detectors, the electrons are detected in the electron pixels that can measure electrons at energies of 25 keV to 1 MeV. The electron detectors are covered with 2-micrometer aluminum metal flashing to reject protons at low energies. Electron measurements do not require a TOF measurement because direction is directly measured by the detector.

The detector system has to be time-multiplexed and can either measure electrons or ions. Three species modes (electron energy, ion energy & ion species, all coupled with direction measurements) are cycled every 0.5 seconds. The six physical SSDs provide a total of 24 SSD pixels (every SSD has 2 electron and two ion pixels – one large pixel of 6.2 by 6.5mm and a small pixel in the center of 1.3 by 1.6mm). Each SSD is connected to a Preamp Board that is part of the sensor assembly.

The electronics box of each sensor holds the event board, power supplies and support electronics. The Event Board interfaces with the sensor to receive TOF signals, SSD data, and MCP pulse heights that are processed by a RTAX2000 16-bit processor. A dedicated Low Voltage Power Supply delivers the low-voltage buses for the various electronics of the sensor while the high-voltage is provided to the sensor head via a High Voltage Supply and Monitor Unit. Data and commands between the instrument and the spacecraft are exchanged via an RS-422 link. Overall, JEDI can process 30,000 events per second.

Each JEDI Sensor head is protected by a cover that is deployed after launch as part of instrument commissioning.

Radio and Plasma Wave Sensor – Waves

The Waves instrument measures radio and plasma waves in the Jovian magnetosphere to help understand interactions between Jupiter’s magnetic field, the magnetosphere and the atmosphere. It measures the electric and magnetic field components of in-situ plasma waves and freely propagating radio waves.

The instrument consists of a V-shaped antenna that measures four meters from tip to tip – a dipole antenna to measure electric fields, and a magnetic search coil to measure the magnetic component. Waves electronics are installed inside the Radiation Vault.

The dipole antenna and its electronics are built to analyze electric fields in the frequency range of 50Hz to 40MHz. The antenna consists of two elements each 2.8m in length. These elements are extended in a plane rotated 45 degrees to the aft of the aft deck with a subtended angle of 120 degrees. The antenna is installed aft of the solar panel wing that features the Magnetometer Boom to be symmetric with the wing.

The magnetic search coil consists of a fine copper wire wrapped 10,000 times around a 15-centimeter mu-metal core (77% nickel, 16% iron, 5% copper 2% chromium) – an alloy that has a very high magnetic permeability. The search coil is installed on the aft flight deck parallel to the spacecraft z-axis which itself is parallel to the spacecraft spin axis. This is done to minimize the effects of the very strong magnetic field of Jupiter rotating as the vehicle spins at 2rpm near perijove. The magnetic search coil measures wave magnetic fields from 50hz to 20kHz.

The Waves sensor electronics consist of two receivers – a low and a high frequency receiver. The low frequency receiver includes two channels that are covering the frequency range of 50 Hz to 20 kHz. The system operates in two configurations – one allows for simultaneous sampling of electric and magnetic sensor data and the other configuration uses a signal from the Juno Power Distribution Unit to reflect voltage fluctuations on the bus to be used in a noise cancelling mode with either the electric or the magnetic signal being analyzed in the second channel. The third channel of the Low Frequency Receiver is a high band that covers frequencies of 10 kHz to 150 kHz used for electric signals only with noise cancelation capability.

The High-Frequency Receiver is comprised of two nearly identical units – one used to analyze data from 100 kHz to 40 MHz and the other allows for high-resolution waveform measurements in a 1-MHz band.

The baseband receiver includes a variable gain amplifier, a 100 kHz to 3 MHz bandpass filter and a 12-bit analog-to-digital converter. The second receiver is a double sideband heterodyne receiver detecting the amplitude of signals in 1-MHz bandwidths from 3 to 40 MHz as a swept frequency receiver.

The Waves Data Processing Unit consists of two field programmable gate arrays.

The first is responsible for Waves instrument operations including command execution, data output functions, observation scheduling and on-board analysis. The second FPGA is optimized to carry out Fourier transforms and other signal processing operations to move signal analyses from the analog to the digital domain – performing spectrum analysis, spectral binning and averaging, and noise cancellation.

(for complete article and additional information on the Juno spacecraft, visit https://spaceflight101.com/)

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Coaxial Components Corp. also known worldwide as Coaxicom, began manufacturing in 1984 at it’s facility in Florida. Coaxicom offers a broad line of SMA, SSMA, 3.5mm, BNC, N and TNC, as well as 50 & 75 Ohm Snap, Screw and Slide-on SMB, SMC, SSMB, SSMC and many other types. Our large selection of Inter & Intra Series Adapters; RF Connectors; Attenuators; Terminations; Phase Adjusters; Torque Wrenches and Cable Assemblies are ready for quick delivery. Custom products, specifically designed and engineered to our Customer’s specifications are produced in our Florida facility.

Coaxial Components Corp. (Coaxicom) offers world-class manufacturing capabilities necessary to deliver the quality and reliability our customers demand including Military specifications MIL-PRF 39012, MIL-A 55339, MIL-C-83517, and MIL-STD-348 as applicable. Gold plated stainless steel or passivated versions of SMA connectors are standard in order to meet the finish and corrosion requirement of MIL-PRF 39012. Interface dimensions as well as all other applicable requirements are also in accordance with MIL-PRF-39012 and other military standards where the need exists.

Quality products at competitive prices, coupled with our extensive inventory and rapid turn-around has enhanced our reputation for creating satisfied Customers.

Mission Statement

Coaxicom’s mission is to provide high quality Made in America products at economical prices and ensure un-compromised Customer satisfaction. Coaxicom’s extensive resources enable you, our Customer, to focus on your operational needs. At Coaxicom, we understand the importance of adapting our services on an ongoing basis to keep pace with our Customers’ changing needs. We continually strive to be the best every day, with each Customer we serve.

Coaxicom Praises SwRI’s Advancements in Mobile Autonomous Robotics Technology.

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San Antonio – June 14, 2016 – (www.swri.org/) – Southwest Research Institute (SwRI), a leading developer of high performance automated driving algorithms and unmanned systems, is celebrating the 10-year anniversary of its Mobile Autonomous Robotics Technology Initiative during the recent Eurosatory trade show.

Since 2006, SwRI has automated 15 vehicle platforms — from Class VIII tractor trailers and tactical military vehicles to passenger cars and golf carts — with automated driving systems deployed on four continents and seven countries, including Afghanistan.

“Our unique unmanned systems technologies enable automated vehicle deployment in support of military troops and support personnel in a variety of environments around the world,” said Ryan Lamm, R&D director in SwRI’s Automation and Data Systems Division.

At Eurosatory, SwRI will demonstrate technologies that enable reliable perception of humans and roadway obstacles in addition to showcasing algorithms for traversing roadways without GPS.

SwRI’s modular perception systems detect and classify humans, vehicles, and other objects with dynamic scene understanding of complex environments for roadway and off-road applications.

SwRI also will display its patented Ranger localization solution. A 2015 R&D 100 innovation award winner, Ranger enables precise navigation for automated vehicles by utilizing ground-facing cameras and custom SwRI algorithms. The system images the unique “fingerprint” of road surfaces. Algorithms match thousands of distinguishing ground features, such as aggregate, cracks and road markings, to corresponding features collected and stored in a map.

Its camera-based approach with controlled illumination allows for precise automated driving within 2 centimeters, similar to the most accurate (and most expensive) GPS systems, during daytime or night, and in rain and foggy weather conditions. Ranger also operates in areas where GPS has poor performance or fails completely, offering custom capability for military and commercial fleet vehicles.

“Ranger offers the defense sector numerous advantages in operational capability for deployment of unmanned assets in remote locations where GPS is disabled or unavailable,” said Dr. Kristopher Kozak, a principal engineer in SwRI’s Automation and Data Systems.

Coaxicom based in Stuart, Florida designs and manufactures an extensive line of standard, as well as custom microwave and RF connectors all available in 50 or 75 Ohm impedance. Serving customers in industries including the US military, automotive, medical, instrumentation, aerospace, defense, telecom, wireless alternative energy and more. Coaxicom is committed to providing outstanding service, value and quality with our made in the USA RF Connectors including RF Adapters and all series of coax connectors, and cable assemblies since 1984. Coaxicom also offers world-class manufacturing capabilities necessary to deliver the quality and reliability our customers demand including Military specifications MIL-PRF 39012, MIL-A 55339, MIL-C-83517, and MIL-STD-348 as applicable. Learn more about Coaxicom and  RF Connectors here.

Coaxial Cable Assemblies

Nano-Coating Makes Coaxial Cables Lighter

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Common coaxial cables could be made 50 percent lighter with a new nanotube-based outer conductor developed by Rice University scientists.

The Rice lab of Professor Matteo Pasquali has developed a coating that could replace the tin-coated copper braid that transmits the signal and shields the cable from electromagnetic interference. The metal braid is the heaviest component in modern coaxial data cables.

Replacing the outer conductor with Rice’s flexible, high-performance coating would benefit airplanes and spacecraft, in which the weight and strength of data-carrying cables are significant factors in performance.

Rice research scientist Francesca Mirri, lead author of the paper, made three versions of the new cable by varying the carbon-nanotube thickness of the coating. She found that the thickest, about 90 microns – approximately the width of the average human hair – met military-grade standards for shielding and was also the most robust; it handled 10,000 bending cycles with no detrimental effect on the cable performance.

“Current coaxial cables have to use a thick metal braid to meet the mechanical requirements and appropriate conductance,” Mirri said. “Our cable meets military standards, but we’re able to supply the strength and flexibility without the bulk.”

Coaxial cables consist of four elements: a conductive copper core, an electrically insulating polymer sheath, an outer conductor and a polymer jacket. The Rice lab replaced only the outer conductor by coating sheathed cores with a solution of carbon nanotubes in chlorosulfonic acid. Compared with earlier attempts to use carbon nanotubes in cables, this method yields a more uniform conductor and has higher throughput, Pasquali said. “This is one of the few cases where you can have your cake and eat it, too,” he said. “We obtained better processing and improved performance.”

Replacing the braided metal conductor with the nanotube coating eliminated 97 percent of the component’s mass, Mirri said.

She said the lab is working on a method to scale up production. The lab is drawing on its experience in producing high-performance nanotube-based fibers.

“It’s a very similar process,” Mirri said. “We just need to substitute the exit of the fiber extrusion setup with a wire-coating die. These are high-throughput processes currently used in the polymer industry to make a lot of commercial products. The Air Force seems very interested in this technology, and we are currently working on a Small Business Innovation Research project with the Air Force Research Laboratory to see how far we can take it.”

Crawfish Festival

(Article credit: Rice University, Houston, Texas Jan. 2016, www.https://news.rice.edu/. Co-authors are graduate students Robert Headrick and Amram Bengio and alumni April Choi and Yimin Luo)

Understanding Coaxial Cable Terms, Specifications and Applications

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Coaxial Cable all

What is Coaxial Cable?
Coaxial cable is a two conductor electrical cable consisting of a center conductor and an outer conductor with an insulating spacer between the two.

How is Coaxial Cable used?
Primarily, coaxial cables are used for the transmission of Radio Frequency energy. The system offers tight control over electrical impedance. This yields excellent performance at high frequencies and superior EMI control/shielding.

Where is Coaxial Cable used?
A broad range of applications exist for coaxial cabling. The two primary impedance values of 50 and 75 Ohms determine specific applications with 50 Ohms primarily used in data signal applications and 75 Ohms used in video signal applications.

Coaxial Cable Terms

Attenuation (Insertion Loss): Loss of power. Attenuation is usually measured in dB loss per length of cable (ex. 31.0 dB/100Ft.). Attenuation increases as frequency increases.
Bend Radius: The amount of radius a cable can bend without any adverse effects.
Center Conductor: The solid or stranded wire in the middle of the coaxial cable. The conductor diameter is measured by the American Wire Gauge (AWG).
Coaxial Adapter: A device used to change one connector type to another or one gender to another (ex. BNC to SMA Adapter).
Coaxial Cable: A two conductor cylindrical transmission line typically comprised of a center conductor, an insulating dielectric material and an outer conductor (shielding). Coaxial cable can be flexible (typical of L-com assemblies), semi-rigid or rigid in nature.
Coaxial Connector: The interconnection device found at each end of a coaxial cable assembly. There are many common types of coaxial connectors such as: BNC, SMA, SMB, F, etc.
Dielectric: The insulating material that separates the center conductor and the shielding.
Electromagnetic Interference (EMI): Electrical or electro-magnetic energy that disrupts electrical signals.
Frequency: The number of times a periodic action occurs in one second. Measured in Hertz.
Impedance: In simple terms, impedance, in a coaxial product, is the measurement of resistance to the flow of current. The unit of measurement is Ohms.

The following is a more technically correct definition:Transmission line impedance, also known as characteristic impedance, is the ratio of the amplitudes of a single pair of voltage and current waves propagating along an infinitely long transmission line with absence of any reflections. Characteristic impedance measures like resistance when dealing coaxial cable types. Characteristic impedance is a relationship between the capacitance per unit length and the inductance per unit length. The inner and outer coaxial diameter ratios and the dielectric constant in the cable define the parameters involved in determining characteristic impedance.

Insertion Loss: A measurement of attenuation determined by the system output before and after the connection of a cable and/or device.
Jack: The female connector usually containing a center socket.
Microwave Frequencies: Microwave frequencies range from Ultra-High Frequency (UHF) .3-3GHz, Super High Frequency (SHF) 3-30GHz to Extremely High Frequency (EHF) 30-300GHz.
MIL-C-17: MIL-C-17 is a specification document that has been used since the 1940s to standardize the physical and electrical characteristics of coaxial cables. There is no longer any control of RG specifications so cables may perform differently than the cables that adhere to MIL-C-17.
Plug: The male connector usually containing a center pin.
RF (Radio Frequency): A frequency band from 3 MHz to 3 GHz. Primarily used for transmission of radio and television signals.
RG/U: Symbols used to represent coaxial cable that is built to U.S. government specifications (R=Radio Frequency, G=Government, U=Universal Specification)
Shielding: Conductive envelope made of wires or metal foil that covers the dielectric and the center conductor
Twinaxial: An offshoot from coaxial cabling. Two center conductors with one dielectric and braided shielding.
Velocity of Propagation (VP): Usually expressed as a percentage, VP is the transmission speed of electrical energy in a determined length of cable compared to the speed of light.
VSWR (Voltage Standing Wave Ratio): The ratio of the maximum effective voltage to the minimum effective voltage measured along a RF transmission line. This value generally increases with frequency and higher values are not desirable.

 

Common Applications for Coax Cable Assemblies

 Coaxial Cable A  Coaxial Cable B  Coaxial Cable C  Coaxial Cable D  Coaxial Cable E
Home Entertainment GPS Security Video Telecommunications WAN/LAN

Coaxial cable assemblies are used extensively to inter-connect a wide variety of Home Entertainment equipment such as TV’s, DVR’s, VCR’s CATV or Satellite Receivers. Generally speaking 75 Ohm coaxial cable such as RG6 or RG59 is used to carry Audio and Video signals. Connectors commonly used are BNC, Type F and RCA.

Global Positioning Systems utilize 50 Ohm coaxial cable for connections between receiving antennas and other related equipment. RG174, RG188 or RG316 are often used with SMA, MCX or MMCX connectors. In addition, RG58 with TNC and Type N connectors is used for remote antenna feeds. The transmission of a video image from a security camera to a display monitor is often the job of a 75 Ohm coaxial cable such as RG59A/U, RG59B/U or RG179, most often with BNC connectors. Bundled assemblies with multiple 75 Ohm cables are often used to connect multi-camera setups. The infrastructure of many telecommunications systems relies heavily on 50 Ohm coaxial cable for a multitude of interconnection applications. Cell towers and communication equipment in base station facilities are a few typical examples. In these applications RG58, RG223 and RG213 cable with BNC, TNC and Type N connectors are often utilized. Wide Area Networks and Local Area Networks often utilize 50 Ohm coaxial cable for equipment interconnection. In many of the numerous interconnection applications of these networks you will find RG58 and RG174 are two common cable types. BNC interface connectors are the most common connector types used in these situations. In addition reverse polarized connectors are found on many wireless antenna interfaces.

Frequency Band Data

Coaxial products are generally intended for use in the RF frequency band.

 

Typical Coaxial Cable
(Exploded View): Coaxial Cable exp1
Typical Coaxial Connector
(BNC Exploded View): Coaxial Cable exp2

Understanding Coaxial Cable

Shielding Effectiveness is the relative ability of a shield to screen out undesirable interference. In the case of a coaxial cable, the outer conductor provides a shield to keep interfering signals from getting in and to keep signal from leaking out to become undesirable interference for nearby devices. Shielding Effectiveness is measured in dB with higher values indicating better shielding properties.

Coaxial Cable trans

 

 

The table below illustrates the relative shielding properties of various shielding types. Notice as the shielding density increases there is a correlated increase in the shielding effectiveness value. The best shielding effectiveness value can be found in a rigid coaxial cable due to the solid tube construction of the outer jacket. In this type of cable the limiting factor for shielding effectiveness is the quality of the connector attachment.

Coaxial Cable shielding

 

 

The Next Generation of the Phase Adjustable Connectors  3993-2 RG402 (0.141) and 3993-3 RG405 (0.085).

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 There has never been a faster or easier way to phase match a set of cables. With the newly released high-performance 3993-2 & 3993-3,Coaxicom has enhanced the direct solder versions of the phase adjustable connectors for superior electrical performance. Just trim the cable, plug it in and solder to the connector body.

 The Coaxicom 3993 series of Phase Adjusters are designed to deliver a means of phase adjustment over frequency ranges up to 18 GHz. The 3993 SMA Phase Adjustable connectors have an adjustment range of over 180 degrees and a maximum VSWR of 1.30:1. The 3993 is a phase adjustable SMA plug (male) direct solder connector. The 3993-2 is for RG402 (0.141″  semi-rigid) and the 3993-3 is for RG405 (0.085 semi-rigid). Both can also be used with Coaxicom’s ultra-flex and blue-flex cables. The 3993-2 & 3993-3 are available from stock.

Coaxicom specializes in the manufacture of RF connectors, attenuators, terminations, adapters, torque wrenches, phase adjusters and cable assemblies.

For more information, to request RFQ, or ask for engineering support. 

Contact us at Sales@coaxicom.com – 866-COAXICOM (262.9426) – www.Coaxicom.com

 


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