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An integrated radio frequency signal control circuit and method

A technology of radio frequency signal and control circuit, applied in induction heating control, induction heating and other directions, to achieve the effect of large output power

Active Publication Date: 2019-03-15
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an integrated radio frequency signal control circuit and method to solve the problem of how to control the frequency, phase, size, on and off of the radio frequency signal and ensure that the output power is sufficiently large

Method used

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  • An integrated radio frequency signal control circuit and method
  • An integrated radio frequency signal control circuit and method
  • An integrated radio frequency signal control circuit and method

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Embodiment Construction

[0058] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0059] figure 2 It is a schematic diagram of an integrated radio frequency signal control circuit provided by an embodiment of the present invention.

[0060] refer to figure 2 , the control circuit includes a crystal oscillator circuit, a control / power supply circuit, a frequency synthesizer, an SPI interface circuit and a balun circuit.

[0061] The output terminal of the crystal oscillator circuit is connected with the frequency synthesizer, the output terminal of the frequency synthesizer is connected with the balun circuit, and the control terminal of the frequency synthesizer is connected with the control / power supply circuit through the SPI interface circuit.

[0062] The crystal oscillator circuit is con...

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Abstract

The invention relates to an integrated radio frequency signal control circuit and method. The circuit comprises a crystal oscillator circuit which is connected with a frequency synthesizer for outputting reference signals; a control / power supply circuit which is connected with the frequency synthesizer for inputting parameter information into a register of the frequency synthesizer through an SPI interface circuit so as to control output of the frequency synthesizer; the frequency synthesizer which is connected with a Balun circuit for outputting corresponding difference radio frequency signals according to the parameter information in the register or the reference signals; and the Balun circuit which is connected with the frequency synthesizer for converting the corresponding difference radio frequency signals into corresponding single-end signals. According to the invention, frequency, phase, size, connection and disconnection control of radio frequency signals is realized, and it is ensured that output power is large enough.

Description

technical field [0001] The invention relates to the field of semiconductor microwave technology, in particular to an integrated radio frequency signal control circuit and method. Background technique [0002] The radio frequency microwave generator in the semiconductor microwave oven is related to whether the whole microwave source system can work stably and reliably. The radio frequency microwave generator in the prior art uses the LDMOS microwave amplifier tube to self-excite and oscillate to generate radio frequency signals. For details, please refer to figure 1 , through positive feedback and output resonant network to achieve oscillation in a fixed frequency band, positive feedback to ensure self-excited oscillation, resonant network to ensure the frequency of self-excited oscillation, so as to obtain the required radio frequency signal, resonant network can achieve frequency by changing the resonance point adjustment, but phase adjustment is not possible and works uns...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B6/06
CPCH05B6/06
Inventor 刘建伟刘民勇张斐娜王轩孙宁栾春
Owner GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD
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