Microwave power generating circuit and multi-channel output adjustable microwave power generating device
A microwave power and generation circuit technology, applied in the transmission system, electrical components, etc., can solve the problems of low reliability, high cost and poor precision of closed-loop multi-channel microwave modulation technology, so as to reduce cost and overhead, facilitate modular realization, The effect of wide gain adjustment range
Active Publication Date: 2020-01-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned background technology, provide a microwave power generating circuit and a microwave power generating device with adjustable multi-channel output, and realize the generation of multi-channel microwave power and the control of the amplitude and phase of each microwave power Independent control, which solves the technical problems that the open-loop multi-channel microwave modulation technology needs to rely on the assistance of other amplitude and phase control technologies due to poor precision, and the closed-loop multi-channel microwave modulation technology has high cost and low reliability
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[0019] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.
[0020] figure 2 The proposed microwave power generation module based on quadrature modulation / demodulation technology is shown. In order to clarify its specific implementation principle, the application of the orthogonal modulation / demodulation technology in the present invention is briefly introduced first.
[0021] Figure 3(a) is the schematic diagram of quadrature modulation, the microwave signal v in It is the input signal, which is sent to the 90° bridge coupler and decomposed into equal amplitude (the power is v in 1 / 2 of , the amplitude is v in 0.707 times of ), a group of quadrature signals v with a phase difference of 90° Q and v I , this process can be expressed by the following formula:
[0022]
[0023] where ω is the angular frequency, V in is the input signal v in valid value for . These two sets of signals are respectivel...
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The invention discloses a microwave power generating circuit and a multi-channel output adjustable microwave power generating device, relates to multi-channel microwave power modulation technology, and belongs to the technical field of basic electrical components. The invention first provides the microwave power generating circuit realized on the basis of quadrature modulation / demodulation technology. The circuit includes a first directional coupler, a quadrature demodulator, a digital controller, a quadrature modulator and a second directional coupler, eliminates traditional radio frequency (RF) devices of phase detectors, power detectors, phase shifters (PS), variable gain amplifiers (VGAs) and the like, and has the advantages of high control precision, a simple and convenient design, asimple structure, low costs and the like. The invention also provides the multi-channel microwave power generating device capable of independent adjustment. The device comprises a radio frequency reference signal generating module, a signal distributor module, a multi-channel microwave power generating circuit and a main controller, and has the characteristics of modularization and easy realization. The microwave power generating device realized on the basis thereof can well meet requirements of a microwave wireless energy transmission system on a transmitting end.
Description
technical field [0001] The invention discloses a microwave power generating circuit and a microwave power generating device with adjustable multi-channel output, relates to multi-channel microwave power modulation technology, and belongs to the technical field of basic electrical components. Background technique [0002] Microwave Power Transmission (MPT) technology, which has received widespread attention in recent years, is suitable for medium and long-distance wireless power transmission, providing remote power supply to drones, robots and orbiting satellites, etc. The advantages of being affected by the atmospheric environment, clouds, rain and dew, using beam integration, beam directional and other technologies can achieve highly concentrated and highly directional energy transmission, and using communication modulation and demodulation technology can transmit information while transmitting electrical energy. These advantages make MPT technology has significant advantag...
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IPC IPC(8): H04B1/04
CPCH04B1/04
Inventor 金科惠琦朱熹睿
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS