Patent ID: 8045951
Filing Date: 2011-10-25
Classification: H03D,H04B

Abstract:
1. A receiver comprising: a first mixer for receiving a first reference signal of a first reference frequency and a second reference signal of a second reference frequency and converting an input RF (radio frequency) signal into a first conversion signal using the first reference signal of the first reference frequency and the second reference signal of the second reference frequency, wherein the converting is performed by a switch circuit including at least one switch that conditionally connects two circuit nodes depending on an exclusive NOR operation on the first reference signal and the second reference signal; a second mixer for receiving a third reference signal of the first reference frequency and a fourth reference signal of the second reference frequency and converting the input RF signal into a second conversion signal using the third reference signal of the first reference frequency and the fourth reference signal of the second reference frequency, wherein the converting is performed by a switch circuit including at least one switch that conditionally connects two circuit nodes depending on an exclusive NOR operation on the third reference signal and the fourth reference signal; a third mixer for receiving the first reference signal of the first reference frequency and the fourth reference signal of the second reference frequency and converting the input RF signal into a third conversion signal using the first reference signal of the first reference frequency and the fourth reference signal of the second reference frequency, wherein the converting is performed by a switch circuit including at least one switch that conditionally connects two circuit nodes depending on an exclusive NOR operation on the first reference signal and the fourth reference signal; a fourth mixer for receiving the third reference signal of the first reference frequency and the second reference signal of the second reference frequency and converting the input RF signal into a fourth conversion signal using the third reference signal of the first reference frequency and the second reference signal of the second reference frequency, wherein the converting is performed by a switch circuit including at least one switch that conditionally connects two circuit nodes depending on an exclusive NOR operation on the third reference signal and the second reference signal; a first summing circuit for summing by addition the first and the second conversion signals to generate a first output signal; and a second summing circuit for summing by addition the third and the fourth conversion signals to generate a second output signal.