Patent ID: 7379727
Filing Date: 2008-05-27
Classification: H03D

Abstract:
1. An RF front-end receiver comprising a low noise amplifier and a local oscillator driver, which are connected to respective input ports of a mixer, the mixer comprising: a first and a second transistor having their gates coupled to one input terminal of a first input port of the mixer, a third and a fourth transistor having their gates coupled to the other input terminal of the first input port of the mixer, a fifth and a sixth transistor having their gates coupled to respective input terminal of a second input port of the mixer, the sources of the first and third transistors being coupled to the drain of the fifth transistor, the sources of the second and fourth transistor being coupled to the drain of the sixth transistor, the sources of the fifth and sixth transistor being coupled to ground, the drains of the first and fourth transistor being coupled to one output terminal of a mixer output port, and the drains of the second and third transistor being coupled to the other output terminal of the mixer output port, wherein the low noise amplifier is connected with its output terminals to the first input port of the mixer, and the local oscillator driver is connected with its output terminals to the second input port of the mixer.