Patent ID: 8340623
Filing Date: 2012-12-25
Classification: H04L

Abstract:
1. A self-mixing receiver, used to receive electric signals and transmit digital signals, comprising: a high input impedance voltage amplifier, including an input end utilized to be the input end of the self-mixing receiver, wherein the high input impedance voltage amplifier consists of at least one resistor, at least one capacitor, and a transistor to receive and amplify signals, a gate of the transistor used as the input end of the high input impedance voltage amplifier, a source of the transistor grounded, and a drain of the transistor connected to the resistor and capacitor; a multi-stage amplifier, connected to an output end of the high input impedance voltage amplifier; a mixer, having an input end connected only to an output end of the multi-stage amplifier, utilized to lower the signal frequency to DC level, the mixer consisting of: wherein the mixer takes the gate of one of the plurality of transistors as the input end of mixer, the drain as the positive output end, and the gate as the negative output end; and a digital output converter, connected to an output end of the mixer, including a low pass filter, a voltage comparator, and a digital inverter.