coaxial relay
Coaxial relays are high-frequency switches that switch one coaxial line to one of several output lines or vice versa. They are available in 2-, 3-, 4- and 6-way versions. They are used in antenna and satellite technology, such as in multi-switches, where they switch different LNB signals to the coaxial line leading to the antenna system.
Coaxial relays have coaxial RF connectors and are internally coaxial in design. In order to switch the high-frequency signals from the signal input to the output without significant interference, they must meet all frequency-relevant characteristic values. These include the frequency range and impedance, but also an optimum standing wave ratio, high crosstalk attenuation, low insertion loss and low intermodulation.
From the relay function point of view, the rated voltage and rated current of the relay are of interest, as well as the coil resistance, response times and dropout times.