Switching transistor rectifier suitable for microwave and millimeter wave wireless energy transmission application

Abstract

The invention discloses a switching transistor rectifier suitable for microwave and millimeter wave wireless energy transmission application. The rectifier is composed of a common source transistor, adrain and a gate matching circuit, a phase shifting circuit and an output filtering circuit. An input radio frequency signal is inputted to the transistor drain through the drain matching circuit andsimultaneously inputted to the transistor gate through the phase shifting circuit and the gate matching circuit, and an output DC signal is outputted to a load through the output filtering circuit. The switching characteristics of the transistor are utilized, and the signals of the same frequency and different phases are inputted to the transistor gate and drain respectively to realize the rectifying function. The power conversion efficiency of the rectifier is improved by adjusting the phase difference between the gate and drain signals, and the on-chip input matching circuit is also completed to efficiently utilize the radio frequency signal source. The transistor switching structure is applied to replace the rectifying diode so as to reduce the requirement of input power, ensure the rectifying efficiency of the rectifier at high frequency and improve the reliability of the circuit.

Description

technical field [0001] The invention belongs to the technical field of electronic circuit design, in particular to a rectifier in a microwave and millimeter wave wireless energy transmission system, in particular to a switching transistor rectifier suitable for microwave and millimeter wave wireless energy transmission applications. Background technique [0002] In recent years, the 5G mobile communication network and the future 6G "Internet of Everything" era have gradually developed to the millimeter-wave frequency band, and microwave and millimeter-wave wireless energy transmission technology has developed rapidly. Wireless energy transmission technology is a technology that transmits energy from the transmitting end to the receiving end through microwave beams in free space, and converts microwave energy into DC energy (rectification) to power electronic devices without power supply or battery. It is used in wireless charging, micro It is widely used in applications such...

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Problems solved by technology

The former can increase the output DC voltage by cascading, but the power conversion efficiency is still low. The latter uses diodes composed of transistors to achieve rectification, but due to the influence of process parasitics, the performance of power conversion efficiency and output voltage is poor.

[0005] In the existing diode rectifier structure, most of them use GaAs and other compound semiconductors with excellent gain and efficiency, but they are relatively expensive

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