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JFW Industries, Inc. has been designing, manufacturing, and delivering RF components and automated RF test systems for 38 years. Our manufacturing teams and engineering team operate within an ISO 9001:2008 certified quality system in order to provide quality products with manufacturing traceability and design traceability. Our commitment to our quality system has enabled JFW to become a trusted vendor for companies and militaries around the world.

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Quality

Quality

JFW is committed to anticipating and exceeding customer's requirements and expectations...

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RoHS Compliance

RoHS Compliance

Statement on RoHS Compliance by JFW Industries, Inc. (updated May 28, 2015)

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JFW Industries News

Identifying 2.9mm Fixed Attenuators from 2.4mm Fixed Attenuators

SMA, 2.9 mm, 2.4 mm RF connectors

With the push to 5G by wireless cellular providers, lab benches are now being occupied with a greater number of high frequency fixed attenuators with 2.9 mm (aka 2.92 mm) and 2.4 mm RF connectors.  It is important to be able to tell these RF connectors apart because 2.4 mm and 2.9 mm connectors will damage each other if mated together.  2.9 mm connectors operate up to 40 GHz.  2.4 mm connectors operate up to 50 GHz.  There are notable visible differences between SMA, 2.9 mm and 2.4 mm connectors.  SMA and 2.9 mm connectors can be mated to each other without causing damage.  Their connector threads are identical and their male/female pin diameters are mechanically compatible.  The obvious difference between a SMA female and a 2.9 mm female is the dielectric.  SMA female has PTFE dielectric and 2.9 mm has an air dielectric.  2.4 mm connectors are not compatible with SMA or 2.9 mm.  The 2.4 mm connectors have a different thread and male/female pin diameters are 56% smaller.  The RF specifications for fixed attenuators that work up to 18 GHz, 40 GHz, and 50 GHz vary greatly.  The RF specification differences can be seen with these three low power fixed attenuator models:  50HF-xxx SMA (DC-18 GHz), 50HFAR-xxx 2.9mm (DC-40 GHz), 50HFAT-xxx 2.4mm (DC-50 GHz).

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Power Divider/Combiner Types and Functionality

This application note covers resistive and reactive power divider/combiners.  The main goal of this app note is to help customers choose the correct power divider/combiner type for their application.  The functionality differences between the two types are discussed with example block diagrams.  The block diagram makes it easy to see why resistive divider/combiners are used for military radio testing.  The block diagram for reactive power divider/combiners shows how its construction is better suited for the fan-in or fan-out of RF signals to multiple devices.   If you have any questions, please contact our engineering team for assistance.

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RF Matrix Switch Types and Functionality

This application note discusses the four different construction types for RF matrix switches with pros and cons for each type.  The matrix switch types are:  blocking matrix switches, non-blocking matrix switches, super non-blocking matrix switches, and common highway matrix switches.  The functionality of each construction type is discussed with example block diagrams.  Please contact our engineering department directly if you have any questions or requests.

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