Semiconductor switches, semiconductor switches - mmic, by - hf - module, power resistor switches - hf - module as well as transmit - and receiving module

摘要

A semiconductor switch is provided, which is capable of a signal for the time of the reception to switch in accordance with an input power, while the capacity of a received signal with a simple construction maintains. The semiconductor switch includes: a first fet, which, in series between a first a - and output port and a second a - and output port is connected, a transmission line, the between the first a - and output port and a third a - and output port is connected, a transmission line, the parallel to the transmission line is arranged, and a detector circuit, which with one end of the transmission line is connected, for outputting a direct voltage, which corresponds to a power level of the diverted radio-frequency signal, wherein the first transistor in accordance with an output of the detector circuit controlled and switched, for switching between a path between the first a - and output port and the second a - and output port and a path between the first a - and output port and the third a - and output port.