Patent ID: 7092679

Claim:
A low loss transmit/receive switch for diversity antenna radio frequency applications, the low loss transmit/receive switch comprises: first antenna capacitive coupling circuit operably coupled to a first antenna; second antenna capacitive coupling circuit operably coupled to a second antenna; antenna selection circuit operably coupled to enable the first or the second antenna in accordance with an antenna selection signal; first inductive coupling circuit operably coupled to the first and second antenna capacitive coupling circuits and to an output of a power amplifier, wherein inductance of the first inductive coupling circuit is tuned with capacitance of the first and second antenna capacitive coupling circuits at a corresponding radio frequency; and second inductive coupling circuit operably coupled to the first and second antenna capacitive coupling circuits and to an input of a low noise amplifier, wherein inductance of the second inductive coupling circuit is tuned with the capacitance of the first and second antenna capacitive coupling circuits at the corresponding radio frequency.