Disc coupled feeding miniaturized circularly polarized antenna for microwave energy collection

A technology of circularly polarized antenna and coupled feed, which is applied in the field of miniaturized circularly polarized antenna with disc coupled feed, can solve the problems of difficult optimization of axial ratio, difficulty of antenna design, high design precision requirements, etc., and achieve good miniaturization effect , Maintain the antenna impedance characteristics and improve the performance of the antenna

Active Publication Date: 2022-01-11
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single-feed circular polarization requires high design accuracy, and the axial ratio is difficult to optimize, which brings difficulties to antenna design

Method used

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  • Disc coupled feeding miniaturized circularly polarized antenna for microwave energy collection
  • Disc coupled feeding miniaturized circularly polarized antenna for microwave energy collection
  • Disc coupled feeding miniaturized circularly polarized antenna for microwave energy collection

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Embodiment 1

[0029] Such as figure 1 with 2 As shown, the miniaturized circularly polarized antenna with disc coupling feeding for microwave energy collection according to the present invention includes a dielectric plate and a conductive probe 5; a circular metal layer 3 is arranged at the center of the upper side of the dielectric plate , and an eccentric circular hole 6 is provided at the eccentric position of the circular metal layer 3; a coupling feed disc 4 is embedded in the dielectric plate parallel to the upper side plate surface, and the center of the coupling feed disc 4 deviates from The center of the circular metal layer 3 and the center of the eccentric hole 6;

[0030] The lower side of the dielectric board is the floor, the upper end of the conductive probe 5 is electrically connected to the center of the lower side of the coupling feeding disc 4, and the lower end of the conductive probe 5 is electrically connected to the floor.

[0031] By opening an eccentric hole at t...

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Abstract

The invention discloses a disc coupled feeding miniaturized circularly polarized antenna for microwave energy collection. The disc coupled feeding miniaturized circularly polarized antenna comprises a dielectric plate and a conductive probe; a circular metal layer is arranged at the center of the upper side surface of the dielectric plate, and an eccentric circular hole is formed in the eccentric position of the circular metal layer; and a coupling feed disc is embedded in the dielectric plate and is parallel to the upper side plate surface, and the circle center of the coupling feed disc deviates from the circle center of the circular metal layer and the circle center of the eccentric circular hole. According to the circularly polarized antenna, the eccentric circular hole is formed in the eccentric position of the surface of the circular metal layer, disc coupling feeding is adopted for the formed circular ring to suppress the surface inductance effect, the antenna performance is improved, on the premise that the antenna gain is not changed, the patch size of the circularly polarized antenna is reduced to 70.7% of that of a traditional mode, the axial ratio of the maximum radiation direction is 2.1 dB, circular polarization is realized, and the antenna has a relatively good miniaturization effect while the impedance characteristic, bandwidth and gain performance of the antenna are maintained, so that the antenna has a wide application prospect.

Description

technical field [0001] The invention relates to a miniaturized circularly polarized antenna, in particular to a disk coupling feeding miniaturized circularly polarized antenna for microwave energy collection. Background technique [0002] With the development of technology, the application range of antennas has been continuously expanded, especially in recent years with the development of wireless power transmission technology, antennas have been widely used in microwave wireless power transmission (MWPT) systems. MWPT mainly relies on transceiver antennas for long-distance transmission of wireless energy. In energy transmission systems, antenna miniaturization technology is conducive to integrating energy harvesting devices into various electrical equipment (such as small drones, etc.), and has always been a A question worth studying. For the MWPT system, the microwave rectifier circuit at the receiving end can only reach the peak efficiency at a specific input power, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50
CPCH01Q1/50H01Q1/38Y02D30/70
Inventor 彭程罗康赵志远张璐婕李凯刘汉李有杨仰强夏雷
Owner NAT UNIV OF DEFENSE TECH
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