Patent ID: 9209750
Filing Date: 2015-12-08
Classification: H03D

Abstract:
1. A harmonic rejection mixer comprising: five gain devices that convert a radio frequency signal to currents; five switching devices that perform frequency conversion based on the currents from the gain devices and local oscillation signals; an adder that is connected with the five switching devices and adds up the currents from the five switching devices and that converts the resultant current to a voltage; and a changeover switch that is connected with the five gain devices and the five switching devices and distributes the currents from the gain devices to the five switching devices or two switching devices based on a predetermined ratio; wherein, when the currents from the five gain devices are distributed to the five switching devices, the predetermined ratio is approximately sin(30°):sin(60°):sin(90°):sin(120°):and sin(150°), and when the currents from the five gain devices are distributed to the two switching devices, the predetermined ratio is approximately 1:1.