Patent ID: 6757523
Filing Date: 2004-06-29
Classification: H04B

Abstract:
An economical, compact, wireless data telemetry transceiver, comprising:a transmitter having an output port; a receiver having an input port; an antenna selectively electrically connectable to one of said transmitter output port and said receiver input port through a transmit/receive switch; said transmit/receive switch being connected to said transmitter output port at a transmitter connection node, being connected to said receiver input port at a receiver connection node and being connected to said antenna at an antenna connection node; said transmit/receive switch comprising a first transmission line segment connected between said transmitter connection node and said antenna connection node and having a first selected electrical length; said transmit/receive switch further comprising a second transmission line segment connected between said receiver connection node and said antenna connection node and having a second selected length; said transmit/receive switch further comprising a first semiconductor circuit element having a conducting state and a substantially non-conducting state; said transmit/receive switch further comprising a third transmission line segment connected between said transmitter connection node and a first semiconductor circuit element connection node; said first semiconductor circuit element being selectively operable to effectively ground said third transmission line segment at said first semiconductor circuit element connection node when in said conducting state.