Patent ID: 7535360
Filing Date: 2009-05-19
Classification: G06K,H03D

Abstract:
1. An Radio Frequency (RF) device, comprising: an RF antenna operable to receive a backscattered signal; a signal source operable to generate an in-phase and a quadrature-phase component of an RF carrier signal; a first mixer coupled to the signal source and operable to multiply the in-phase component of the RF carrier signal and the received backscattered signal to generate a first baseband signal; a second mixer coupled to the signal source and operable to multiply the quadrature-phase component with the received backscattered signal to generate a second baseband signal; and a multiplexer operable to pass one of the first baseband signal or the second baseband signal as a demodulated RF output signal based, at least in part, on an amplitude of the first baseband signal or an amplitude of the second baseband signal.