FIELD: electricity.
SUBSTANCE: microwave switch contains a key with its control circuit engaged between the first port (transmission) and common port connected to antenna. Between common port and the second port (receive) through a section of quarter-wave line of transmission there is engaged diagram of microwave power limiter of reflection-type. Branch receiver is disengaged automatically due to actuation of limiter and reflection of power to antenna port through the section of quarter-wave line. The switch is good for use upon increase of frequency range where it allows to reach minimum losses in transmitter-receivers.
EFFECT: no need for engagement of protection device at input of receiving amplifier behind the switch thus reducing losses and noise.
1 dwg
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