Microwave solid-state power source circuit and microwave therapeutic instrument

Abstract

The invention discloses a microwave solid-state power source circuit. The microwave solid-state power source circuit comprises a frequency source, an amplification circuit connected with the frequencysource, an output circuit connected with the amplification circuit, an output signal acquisition circuit and a standing wave signal acquisition circuit connected with the output circuit, and a controller respectively connected with the frequency source, the amplification circuit, the output circuit, the signal acquisition circuit and the standing wave signal acquisition circuit. A feedback regulation circuit is formed by the output signal acquisition circuit and the controller, and closed-loop control of a microwave generation process is realized, so that the power error of an output microwave signal is reduced, and accurate control of the output power is realized; and devices such as amplifiers and the like adopted in the amplification circuit are damaged easily, so that a standing waveprotection circuit is formed by the standing wave signal acquisition circuit and the controller, and the service life of the devices is prolonged. The invention also provides a microwave therapeutic instrument which has the mentioned beneficial effects.

Description

Technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a microwave solid-state power source circuit and a microwave therapeutic apparatus. Background technique [0002] Microwaves refer to electromagnetic waves with frequencies ranging from 300MHZ to 300GHz. In the 1930s, medical workers discovered the biological effects of microwaves. Clinically, the interaction between microwaves and organisms can be divided into two categories, namely microwave heating effects and non-microwave heating effects. The microwave hyperthermia used by the microwave therapeutic apparatus is a non-contact heating method, and there is no possibility of thermal burns and electric burns caused by electrical contact. [0003] The microwave solid-state circuit is a key component in the microwave therapeutic apparatus. The microwave solid-state circuit uses a magnetron as the core component to realize the function of generating the required microwaves. T...

AI Technical Summary

Problems solved by technology

Due to the device error of the magnetron itself and the change in conversion efficiency caused by the heating of the circuit during use, the power error of the microwave signal output by the microwave solid-state circuit is relatively large, and the ideal microwave generation effect cannot be achieved.

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