Resonance circuit and electronic equipment

Abstract

The invention is suitable for the technical field of communication, and provides a resonance circuit and electronic equipment. The n resonance branches are different in resonance frequency, each resonance branch is connected with a capacitance unit with an adjustable capacitance value in series, and the capacitance units are used for being coupled with the inductance coil when the resonance branch and the inductance coil form a resonance circuit, so that the resonance branch reaches the optimal resonance point corresponding to the resonance frequency of the resonance branch; n is an integer greater than 1; the first fixed end and the second fixed end of the switch selection circuit are respectively connected with the first end and the second end of the inductance coil, the n first movable ends are respectively connected with the first conduction ends of the n resonance branches, and the n second movable ends are respectively connected with the second conduction ends of the n resonance branches; and the switching circuit is used for switching on the first conduction end of the target resonance branch and the first end of the inductance coil and switching on the second conduction end of the target resonance branch and the second end of the inductance coil, so that the target resonance branch and the inductance coil form a resonance circuit, and the problem of mutual interference between the inductance coils is avoided.

Description

technical field [0001] The present application belongs to the technical field of communication, and in particular relates to a resonant circuit and electronic equipment. Background technique [0002] In an AC circuit with resistance, inductance and capacitance, the phase of the voltage at both ends of the circuit is generally different from the phase of the current in the circuit. Usually, the phase of the voltage and the phase of the current can be made the same by adjusting the parameters of the inductance or capacitance. In turn, the entire circuit is purely resistive, and the circuit reaches a resonant state at this time, and the circuit that reaches the resonant state is usually called a resonant circuit. The resonant circuit has a frequency selection function, which can keep useful frequency components and filter out useless frequency components. Specifically, by changing the resonant frequency of the resonant circuit, it can resonate at the frequency of the carrier s...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a resonant circuit and electronic equipment to solve the problem that the inductance coils in different resonant circuits of the existing resonant circuit interfere with each other and affect the normal operation of each resonant circuit question

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