Patent ID: 7079816

Claim:
An on-chip diversity antenna switch comprises: a first switch operably coupled to a first terminal associated with a first antenna that is to be utilized for both transmitting and receiving, in which when the first switch is closed, the first switch operably couples the first antenna to a transmitter; a second switch operably coupled to the first terminal associated with the first antenna, in which when the second switch is closed, the second switch operably couples the first antenna to a receiver; a third switch operably coupled to a second terminal associated with a second antenna that is to be utilized for both transmitting and receiving, in which when the third switch is closed, the third switch operably couples the second antenna to the transmitter; and a fourth switch operably coupled to the second terminal associated with the second antenna, in which when the fourth switch is closed, the fourth switch operably couples the second antenna to the receiver, wherein a transmit/receive (T/R) control signal coupled to all four switches is used to close only one switch at a given time to select between the first and second antennas to be coupled to either the transmitter or the receiver to provide T/R control of two diversity antennas used for transmitting and receiving.