Patent ID: 8643431
Filing Date: 2014-02-04
Classification: H01P,H03D,H03F

Abstract:
1. An in-phase/quadrature demodulator, comprising: a Lange coupler structured to split a Local Oscillator (LO) signal into an in-phase component and a quadrature component; a low noise amplifier (LNA) structured to receive a modulated carrier and to output an amplified signal; a first mixer structured to receive the amplified signal from the LNA and the in-phase component of the LO signal from the Lange coupler; and a second mixer structured to receive the amplified signal from the LNA and the quadrature component of the LO signal from the Lange coupler; wherein the first and second mixers are structured to output I and Q signals demodulated from the modulated carrier received by the LNA, and wherein the Lange coupler comprises: