Microwave power distribution network and method based on phase-frequency hybrid control
The present disclosure discloses a microwave power distribution network ( 10 ) and method based on phase-frequency hybrid control, an electronic device, and a storage medium. The microwave power distribution network ( 10 ) includes a first-stage microwave combining and distribution subnetwork ( 100 ) based on phase control and a second-stage microwave distribution subnetwork ( 200 ) based on frequency control. The microwave power distribution network ( 10 ) is a passive device and does not require additional signals to change its state or mechanical structure. High-power microwaves generated by power sources with a certain relationship between phases and frequencies are distributed to corresponding output ports after entering the microwave distribution network ( 10 ), thereby meeting the needs of fast switching of multi-angle irradiation fields in technologies such as FLASH radiotherapy and stationary CT.
1 . A microwave power distribution network based on phase-frequency hybrid control, characterized by comprising:
a microwave combining and distribution subnetwork based on phase control, comprising 2 N input ports and 2 N intermediate output ports, the microwave combining and distribution subnetwork being configured to determine a first target port from the 2 N intermediate output ports according to phases of 2 N input signals when the phases of the 2 N input signals satisfy a predetermined amplitude-phase relationship, and combine and distribute the 2 N microwave input signals for outputting from the first target port, where N is a positive integer greater than or equal to 1; and
2 N single-input multiple-output microwave distribution subnetworks based on frequency control, each comprising an intermediate input port and a plurality of microwave output ports, the 2 N intermediate input ports being connected to the 2 N intermediate output ports respectively, and the 2 N single-input multiple-output microwave distribution subnetworks based on frequency control being configured to select, according to a frequency of a microwave signal outputted from the first target port, a second target port from the plurality of microwave output ports to output a microwave signal.
2 . The network according to claim 1 , wherein the predetermined amplitude-phase relationship comprises the 2 N input signals having same amplitudes and a phase difference of ±90°.
3 . The network according to claim 1 , wherein the microwave combining and distribution subnetwork based on phase control is composed of at least one 3 dB hybrid or magic T microwave device.
4 . The network according to claim 1 , wherein the 2 N microwave input signals have same frequencies that are equal to the frequency of the microwave signal outputted from the first target port.
5 . The network according to claim 1 , wherein each microwave output port of the single-input multi-output microwave distribution subnetwork based on frequency control allows a different microwave frequency range to pass, and the microwave frequency ranges of all the microwave output ports comprise frequencies of the 2 N microwave input signals.
6 . A microwave power distribution method based on phase-frequency hybrid control, applied in the microwave power distribution network based on phase-frequency hybrid control according to claim 1 , the method comprising:
determining amplitudes and frequencies of the 2 N microwave input signals according to a position of the second target port and a microwave power level of a target load connected to the second target port, and adjusting phases of the 2 N microwave input signals according to the predetermined amplitude-phase relationship;
inputting the adjusted 2 N microwave input signals into the 2 N input ports of the microwave combining and distribution subnetwork based on phase control, and outputting a microwave signal via the first target port after combining and distributing the adjusted 2 N microwave input signals by using the microwave combining and distribution subnetwork based on phase control; and
inputting the microwave signal outputted from the first target port into the 2 N single-input multi-output microwave distribution subnetworks based on frequency control, and outputting the microwave signal via the second target port.
7 . The method according to claim 6 , wherein the predetermined amplitude-phase relationship comprises the 2 N input signals having same amplitudes and a phase difference of ±90°.
8 . The method according to claim 6 , wherein the microwave combining and distribution subnetwork based on phase control is composed of at least one 3 dB hybrid or magic T microwave device.
9 . The method according to claim 6 , wherein the 2 N microwave input signals have same frequencies that are equal to the frequency of the microwave signal outputted from the first target port.
10 . The method according to claim 6 , wherein each microwave output port of the single-input multi-output microwave distribution subnetwork based on frequency control allows a different microwave frequency range to pass, and the microwave frequency ranges of all the microwave output ports comprise frequencies of the 2 N microwave input signals.
11 . An electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to execute the program to implement a microwave power distribution method based on phase-frequency hybrid control, the method being applied in the microwave power distribution network based on phase-frequency hybrid control according to claim 1 and comprising:
determining amplitudes and frequencies of the 2 N microwave input signals according to a position of the second target port and a microwave power level of a target load connected to the second target port, and adjusting phases of the 2 N microwave input signals according to the predetermined amplitude-phase relationship;
inputting the adjusted 2 N microwave input signals into the 2 N input ports of the microwave combining and distribution subnetwork based on phase control, and outputting a microwave signal via the first target port after combining and distributing the adjusted 2 N microwave input signals by using the microwave combining and distribution subnetwork based on phase control; and
inputting the microwave signal outputted from the first target port into the 2 N single-input multi-output microwave distribution subnetworks based on frequency control, and outputting the microwave signal via the second target port.
12 . The electronic device according to claim 11 , wherein the predetermined amplitude-phase relationship comprises the 2 N input signals having same amplitudes and a phase difference of ±90°.
13 . The electronic device according to claim 11 , wherein the microwave combining and distribution subnetwork based on phase control is composed of at least one 3 dB hybrid or magic T microwave device.
14 . The electronic device according to claim 11 , wherein the 2 N microwave input signals have same frequencies that are equal to the frequency of the microwave signal outputted from the first target port.
15 . The electronic device according to claim 11 , wherein each microwave output port of the single-input multi-output microwave distribution subnetwork based on frequency control allows a different microwave frequency range to pass, and the microwave frequency ranges of all the microwave output ports comprise frequencies of the 2 N microwave input signals.
16 . A computer-readable storage medium having a computer program stored thereon, the program, when executed by a processor, implementing a microwave power distribution method based on phase-frequency hybrid control, the method being applied in the microwave power distribution network based on phase-frequency hybrid control according to claim 1 and comprising:
determining amplitudes and frequencies of the 2 N microwave input signals according to a position of the second target port and a microwave power level of a target load connected to the second target port, and adjusting phases of the 2 N microwave input signals according to the predetermined amplitude-phase relationship;
inputting the adjusted 2 N microwave input signals into the 2 N input ports of the microwave combining and distribution subnetwork based on phase control, and outputting a microwave signal via the first target port after combining and distributing the adjusted 2 N microwave input signals by using the microwave combining and distribution subnetwork based on phase control; and
inputting the microwave signal outputted from the first target port into the 2 N single-input multi-output microwave distribution subnetworks based on frequency control, and outputting the microwave signal via the second target port.
17 . The computer-readable storage medium according to claim 16 , wherein the predetermined amplitude-phase relationship comprises the 2 N input signals having same amplitudes and a phase difference of ±90°.
18 . The computer-readable storage medium according to claim 16 , wherein the microwave combining and distribution subnetwork based on phase control is composed of at least one 3 dB hybrid or magic T microwave device.
19 . The computer-readable storage medium according to claim 16 , wherein the 2 N microwave input signals have same frequencies that are equal to the frequency of the microwave signal outputted from the first target port.
20 . The computer-readable storage medium according to claim 16 , wherein each microwave output port of the single-input multi-output microwave distribution subnetwork based on frequency control allows a different microwave frequency range to pass, and the microwave frequency ranges of all the microwave output ports comprise frequencies of the 2 N microwave input signals.