Differential dual polarization patch antenna based on split-ring resonator

Abstract

The invention discloses a differential dual polarization patch antenna based on a split-ring resonator. The antenna comprises a bottom layer antenna reflection plate, wherein two split-ring resonatorsare arranged on the antenna reflection plate; the centers of the two split-ring resonators are connected and the two split-ring resonators are crossed; inner cores of four coaxial cables are respectively welded to the two ends of the two split-ring resonators; the four welding points are in a center symmetrical distribution state; a microband patch is formed on the top of the split-ring resonators. The differential dual polarization patch antenna based on the split-ring resonator disclosed by the invention has the advantages that the whole antenna is of a center symmetrical structure; the differential feed symmetrical resonance ring stimulation patch is used; the advantages of small dimension, compact structure, wide frequency band, high port isolation degree, high directivity diagram polarization isolation degree and the like are realized; the differential dual polarization patch antenna can be widely applied to the wireless communication fields of radar and base station communication, satellite communication, wireless local area networks and the like; the upper layer microband patch is a square patch, so that the mutual orthogonal intersection radiation mode is stimulated.

Description

technical field [0001] The invention belongs to the field of wireless communication dual-polarization antennas, in particular to a differential dual-polarization patch antenna based on a split resonant ring in the field. Background technique [0002] Since the differential circuit has a good suppression effect on white noise, harmonic noise and common mode noise, it has been widely used in the fields of microwave circuits and digital circuits. However, in the traditional antenna design, the antennas are all single-ended feeds, which will cause the traditional single-ended antennas to be unable to be directly connected to the differential communication system. If it is necessary to connect a single-end fed antenna to a differential communication system, it is necessary to introduce an additional single-end differential conversion device, such as a power splitter with a function of outputting a differential phase, or a balun. However, the introduction of a power divider or a ...

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Problems solved by technology

Low profile, wide bandwidth, high port isolation and high polarization isolation become challenging targets for various communication systems

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