Two channels, high speed, RF switch

摘要

A dual channel, RF switch with broadband frequency response is provided wherein an RF signal input to a transformer is provided to a first and second biasing circuit. Each biasing circuit includes one or more DC blocking capacitors and a biasing PIN diode. Thus the biasing circuit provides an RF output to an output port. A biasing circuit control signal selectively controls each biasing circuit. When a biasing circuit is biased, it presents a very low resistance to the output load, while in an unbiased condition; the biasing circuit provides a very high resistance or impedance to the output load. The PIN diode provides for a biasing element through which the RF signal does not flow.