Fairview Microwave has released 28 waveguide relay switches, which serve frequencies ranging from 5.85 GHz to 40 GHz, encompassing C, X, Ku, K, and Ka frequency bands. They are targeted at applications such as VSAT, SATCOM, radar, microwave radio, electronic warfare, electronic countermeasures, space systems, and test and measurement instrumentation.
These broadband waveguide switches are configured for single-pole double-throw (SPDT) operation with latching actuators, self-cut-off, TTL logic, and position indicators with manual override. And a shorting plate can be removed for optional double-pole double-throw (DPDT) operation.
All 28 electromechanical switches incorporate a patented motor drive with arc suppression and include an environmentally sealed, quick-connect DC control connector and mate. Moreover, they boast a compact package design with integrated waveguide ports featuring grooved flanges and O-rings for pressurized operation.
According to Tim Galla, product manager at Fairview Microwave, “These waveguide relay switches are targeted for designs that route either low- or high-power signals for applications that may involve microwave communications, broadcasting, and radar.”
The new electromechanical relay switches are available in a broad selection of waveguide sizes: WR137, WR112, WR90, WR75, WR62, WR42, and WR28. They operate in temperatures ranging from –40°C to 85°C, are rated for 250K lifecycles minimum, and packages are fully weatherized for exposure of up to 100% humidity.
These broadband waveguide switches offer high isolation levels of up to 105 dB and extremely low insertion loss down to 0.01 dB. And they are specified with operating voltages of either +12 Vdc or +28 Vdc and power-handling capability of up to 12 kW CW and 320 kW peak.
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