Patent ID: 8311506

Claim:
An radio frequency identification (RFID) receiver front end comprising: an antenna module coupled to generate a plurality of millimeter wave RFID signals from a millimeter wave signal received from a remote RFID device that includes a desired signal component and a blocking signal component; a plurality of a phase adjusters, coupled to the antenna module, that generate a plurality of phase adjusted signals from the plurality of millimeter wave RFID signals, based on a plurality of control signals; a combining module, coupled to the plurality of phase adjusters, that combines the plurality of phase adjusted signals to generate a received signal; a signal strength module, coupled to the combining module, that generates a signal strength of the received signal; and a control module, coupled to the signal strength module and the plurality of phase adjusters, that generates the plurality of control signals to reduce the signal strength of the received signal to partially cancel the blocking signal component.