Patent ID: 8416008

Claim:
A switch circuit comprising: a bipolar junction transistor comprising: a collector terminal connected to a collector of the bipolar junction transistor, the collector terminal configured to pass a collector current with an alternating current component having a first amplitude; a base terminal connected to a base of the bipolar junction transistor, the base terminal configured to pass a base current with an alternating current component having a second amplitude; an emitter terminal connected to an emitter of the bipolar junction transistor, the emitter terminal configured to pass an emitter current with an alternating current component having a third amplitude; a base-collector junction; and a base-emitter junction; and a biasing circuit that: establishes an on-state of the bipolar junction transistor by forward biasing the base-emitter junction, wherein the second amplitude is greater than the third amplitude; and establishes an off-state of the bipolar junction transistor by reverse biasing the base-emitter junction and the base-collector junction.