HF single-pole throw switch e.g. for switching satellite signals to receiver

摘要: The switch includes a number of input ports and the same switches. An matching circuit (31,32) is connected to one ports. electrode transistor (BJT1,BJT2) network output (36). A junction (J) connects together all outputs transistors in switches an coupled junction. DC voltage biasing (35) provides bias voltages for respective transistors. On switching certain signal, only operates linear region with rest operating cut-off. are arranged common-emitter mode. active push-down elements push base below forward force operate cut-off region. Each element insertion point either transistor.