Dual-frequency receiving antenna and dual-frequency rectifying antenna

Abstract

The invention discloses a dual-frequency receiving antenna and a dual-frequency rectifying antenna. The dual-frequency receiving antenna and the dual-frequency rectifying antenna are used for solving the problems that an existing dual-frequency receiving antenna is large in size and small in gain, an existing dual-frequency rectifying antenna is large in size, can not receive weak energy and is not suitable for remote transmission, and a rectifying circuit is poor in reliability. The dual-frequency receiving antenna comprises a rectangular radiating patch. A Z-type groove used for achieving dual-frequency characteristics is formed in the radiation patch. The lower end of the radiation patch is sequentially connected with a dielectric substrate layer and a metal earth plate through a coaxial line. The coaxial line is in circuit connection with the rear end of the radiation patch. An air dielectric layer is formed between the radiation patch and the dielectric substrate layer. The portions, arranged between the radiation patch and the dielectric substrate layer, outside the coaxial line are provided with metal sheets in a bilaterally-symmetric mode. The upper ends of the metal sheets are connected with the radiation patch. The lower ends of the metal sheets are connected with the dielectric substrate layer. One end face of the radiation patch is further connected with the metal sheets connected with the dielectric substrate layer. The dual-frequency receiving antenna and the dual-frequency rectifying antenna can be widely applied in the fields of communication, medical treatment, industry and the like, for microwave power transmission.

Description

technical field [0001] The invention belongs to the antenna technology in the field of wireless energy transmission, and in particular relates to a dual-frequency receiving antenna and a dual-frequency rectifying antenna. Background technique [0002] Wireless power transmission, that is, the technology of transferring energy without passing through power lines, can free people from the constraints of wires. Wireless charging transmission methods can generally be divided into three types: electromagnetic induction type, magnetic field resonance type, and radio wave radiation type. Among them, the radio wave radiation type is also called microwave power transmission (MPT), that is, the electric energy is converted into microwaves for radiation transmission and power supply, which is suitable for long-distance transmission. In 1899, the advent of "Tesla Coil" planted the seeds for the development of MPT. The modern MPT experiment was completed in 1964, using microwaves t...

AI Technical Summary

Problems solved by technology

[0017] The present invention solves the problem that the existing dual-frequency receiving antenna has a large size and small gain; the dual-frequency rectifying antenna has a large size, cannot receive weak energy, is not suitable for long-distance transmission, and has poor reliability of the rectifying circuit in the rectifying antenna , while providing a dual-frequency receiving antenna and a dual-frequency rectenna

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