Microwave Journal

RF Switch with 10 Million Cycle Life and 0.03 dB Repeatability

February 12, 2016

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Dow-Key Microwave has released a high performance and long life SPDT switch, the first in a new line called Reliant Switch™. Covering DC to 26.5 GHz, the bidirectional coaxial switch has a maximum insertion loss of 0.42 dB up to 4 GHz and 0.80 dB at 26.5 GHz. Repeatability of the insertion loss is guaranteed to be 0.03 dB across the entire operating band. Maximum VSWR is 1.15:1 up to 4 GHz and 1.50:1 at 26.5 GHz. The switch has high isolation: 85 dB at 4 GHz and no less than 60 dB at 26.5 GHz. It was designed to have an extended life of 10 million switching cycles for each position, a 10× improvement over a typical RF switch.

The Reliant Switch™ line is being developed to withstand repeated and long life testing of devices under test (DUT). The switches allow easy switching between I/O ports without having to disconnect and reconnect the RF cables to the DUT. More importantly, the consistency of RF measurements requires extremely repeatable insertion loss with long switch life. The Reliant Switch products meet these requirements to help assure the quality and reliability of RF test and measurement systems.

To support a wide range of test and measurement setups and signal switching configurations, Dow-Key Microwave’s Reliant Switch™ is offered with latching actuators, optical position indicators and SMA connectors. The 1×2 switch operates in break-before-make mode and will handle 150 W CW input power at 3 GHz when cold switched; in hot-switching applications, a maximum of 2 W CW can be applied to the input across the full frequency range.

Dow-Key Microwave
Ventura, Calif.