Simultaneous wireless information and power transfer device and method based on the modulation of power supply ripple of magnetron

Patent metadata

Field	Value
Publication number	US-2023030516-A1
Application number	US-202217964842-A
Country	US
Kind code	A1
Filing date	Oct 12, 2022
Priority date	Oct 14, 2021
Publication date	Feb 2, 2023
Grant date	—

Abstract

A SWIPT (simultaneous wireless information and power transfer) device based on the modulation of power supply ripple of magnetron includes a magnetron power supply, a magnetron, an IF (intermediate frequency) signal generator and a first capacitor. The first and second cathode power lines are provided between two ends of the magnetron power supply and two ends of the cathode of the magnetron respectively. One end of the first capacitor is connected with the IF signal generator, and another end of the first capacitor is connected with the first cathode power line. A SWIPT method includes applying an IF signal which is equivalent to the ripple of anode voltage of the magnetron to the anode voltage of the magnetron; taking a resonance signal excited by the magnetron as a local oscillation signal; generating a new signal at an output end of the magnetron, and radiating the new signal through an antenna.

First claim

What is claimed is:

1 . A SWIPT (simultaneous wireless information and power transfer) device based on magnetron modulation of power supply ripple of magnetron, the SWIPT device comprising a magnetron power supply, a magnetron, an IF (intermediate frequency) signal generator and a first capacitor, wherein:
one end of the magnetron power supply is connected with one end of a first cathode power line; another end of the magnetron power supply is connected with one end of a second cathode power line; another end of the first cathode power line and another end of the second cathode power line are connected with two ends of a cathode of the magnetron respectively; one end of the first capacitor is connected with the IF signal generator; and another end of the first capacitor is connected with the another end of the first cathode power line.

2 . The SWIPT device according to claim 1 , wherein a first inductor is provided between the one end and the another end of the first cathode power line.

3 . The SWIPT device according to claim 2 , wherein a second inductor is provided between the one end and the another end of the second cathode power line.

4 . The SWIPT device according to claim 3 , further comprising a third inductor, wherein one end of the third inductor is connected with the IF signal generator, and another end of the third inductor is grounded.

5 . The SWIPT device according to claim 4 , further comprising a fourth capacitor, wherein one end of the fourth capacitor is connected with the one end of the first cathode power line, and another end of the fourth capacitor is grounded.

6 . The SWIPT device according to claim 5 , further comprising a fifth capacitor, wherein one end of the fifth capacitor is connected with the one end of the second cathode power line, and another end of the fifth capacitor is grounded.

7 . The SWIPT device according to claim 6 , further comprising a first resistor, a second resistor and a third resistor, wherein the first resistor is connected with the third inductor in parallel, the second resistor is connected with the first inductor in parallel, and the third resistor is connected with the second inductor in parallel.

8 . The SWIPT device according to claim 7 , further comprising an impedance matching adjuster which comprises a second capacitor and a third capacitor, wherein:
one end of the second capacitor is connected with the IF signal generator; another end of the second capacitor is grounded; and the second capacitor is connected with the third capacitor in parallel.

9 . The SWIPT device according to claim 8 , wherein the second and third capacitors are adjustable.

10 . A SWIPT (simultaneous wireless information and power transfer) method based on modulation of power supply ripple of magnetron with the SWIPT device according to claim 1 , the SWIPT method comprising the steps of powering the magnetron with the magnetron power supply; generating an IF signal by the IF signal generator; inputting the IF signal to the first cathode power line through the first capacitor, wherein at this time, the IF signal which is equivalent to ripple of anode voltage of the magnetron is applied to the anode voltage of the magnetron, a resonance signal excited by the magnetron is used as a local oscillation signal; when the IF signal as the ripple of anode voltage interacts with the resonance signal of the magnetron, due to nonlinear response characteristics of the magnetron, generating a new signal at an output end of the magnetron, wherein a frequency of the new signal is obtained by a linear operation between a frequency of the IF signal and a frequency of the resonant signal, and radiating the new signal through an antenna.

Assignees

• Univ Sichuan

Inventors

• Yang Yang
• Zhu Huacheng

Classifications

• H03C1/00

  Amplitude modulation (H03C5/00, H03C7/00 take precedence) · CPC title

• H03B9/10

  using a magnetron · CPC title

• H02J50/20 Primary

  using microwaves or radio frequency waves · CPC title

• H01J25/54 Primary

  having only one cavity or other resonator, e.g. neutrode tubes · CPC title

• H01J23/36

  Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy · CPC title