Patent ID: 6977531

Claim:
A radio frequency integrated circuit (RFIC) comprises: a receiver section operably coupled to convert inbound radio frequency signals into inbound intermediate frequency signals; transmitter section operably coupled to convert outbound intermediate frequency signals into outbound radio frequency signals; and transmit/receive switch operably coupled to connect either the receiver section or the transmitter section to an antenna, wherein the transmitter section includes: mixing module operably coupled to convert the outbound low intermediate frequency signal into a radio frequency signal; power amplifier operably coupled to amplify the radio frequency signal to produce an amplified radio frequency signal; bandpass filter operably coupled to filter the amplified radio frequency signal to produce the outbound radio frequency signal; and transmit signal strength indication module operably coupled to monitor transmit power of the power amplifier, the bandpass filter, or the transmit/receive switch, wherein the transmit signal strength indication module includes a peak detection circuit and a peak to power conversion module, wherein the peak detection circuit functions to: high pass filtering the outbound radio frequency signal to produce a first input; rectifying the first input signal with respect to a rectifying input to produce a rectified signal; and low pass filtering the rectified signal to produce a peak value.