Omnidirectional circular polarization plane antenna based on electrical/magnetic dipole

Abstract

The invention discloses a circular-polarization omnidirectional antenna based on an electrical / magnetic dipole. The antenna comprises a microstrip antenna and a dielectric substrate supporting the microstrip antenna. The microstrip antenna comprises a first rectangular metal paster and a second rectangular metal paster which are located on upper and lower surfaces of the dielectric substrate. Sizes of the first rectangular metal paster and the second rectangular metal paster are the same, and the first rectangular metal paster and the second rectangular metal paster directly face each other and are in a parallel relation. Along a length direction of the first rectangular metal paster and the second rectangular metal paster, a first rectangular metal arm and a second rectangular metal arm which are in the same size are led out in reverse directions respectively. The first rectangular metal paster and the first rectangular metal arm form a first surface of the dielectric substrate. The second rectangular metal paster and the second rectangular metal arm form a second surface of the dielectric substrate. The first surface and the second surface are connected through a short circuit wall. A width of the short circuit wall is equal to a thickness of the dielectric substrate. A length of the short circuit wall is equal to a length of the first rectangular metal paster. A main radiation portion of the antenna uses the paster and does not use a reactive component. Miniaturization advantages of a low profile, a small size, easy coplane and the like are possessed. The antenna can be realized on a single layer board.

Description

technical field [0001] The present invention relates to the technical field of antennas, more specifically, to an omnidirectional circularly polarized planar antenna based on an electric / magnetic dipole, which is a microstrip patch antenna with a working frequency of 5 GHz and can be realized on a vertical plane Circular polarization and radiation pattern are omnidirectional features. Background technique [0002] The development of communication technology has brought human society into a modern information society. Information exchange is becoming more and more frequent, and communication channels are also diverse. Various electronic communication devices are emerging explosively, and the requirements for communication quality are becoming higher and higher. . As a key component of signal transmission and energy conversion, the antenna is an outpost for signal transmission in different media, and its excellent performance directly affects the quality of communication. ...

AI Technical Summary

Problems solved by technology

Due to the high Q value of the LC resonator, the obtained antenna has a narrow frequency band. If you want to widen it, you need to enlarge the size and sacrifice its miniaturization

Moreover, the antennas made by the above-mentioned prior art mostly use metal nails, which easily introduce high-order modes at high frequencies, which increases the cross-polarization level and affects the radiation pattern.

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