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
CN105934011BActive Publication Date: 2019-03-15GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD +1
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG MIDEA KITCHEN APPLIANCES MFG CO LTD
Publication Date
2019-03-15

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More