High-gain omnidirectional antenna

Abstract

The invention discloses a high-gain omnidirectional antenna, which comprises an upper microwave dielectric substrate (1a) and a lower microwave dielectric substrate (1b), wherein multiple sections of alternately-fed strip lines are printed on the microwave dielectric substrate; each section of strip line consists of an upper metal grounding plate (2a), a lower metal grounding plate (2b) and a metal conduction band (3); the upper metal grounding plates (2a) are printed on the upper surface of the upper microwave dielectric substrate (1a); the lower metal grounding plates (2b) are printed on the lower surface of the lower microwave dielectric substrate (1a); the metal conduction bands (3) are positioned between the upper microwave dielectric substrate (1a) and the lower microwave dielectric substrate (1b); and each metal conduction band is longer than each metal grounding plate and extends to the metal grounding plate of a microstrip line which is adjacent to the metal conduction band; and the metal conduction bands of two adjacent sections of the strip lines are alternately connected with the metal grounding plates through metallized through holes (4). The high-gain omnidirectional antenna disclosed by the invention is favorable in omnidirectional radiation property, simple in assembly process, good in process implementation uniformity and high in reliability.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a stripline high-gain omnidirectional antenna. Background technique [0002] An omnidirectional antenna refers to an antenna that covers 360 degrees in an azimuth direction, and a high-gain omnidirectional antenna generally refers to an omnidirectional antenna with a maximum gain of more than 3dBi. High-gain omnidirectional antennas usually use several omnidirectional antenna elements in the longitudinal direction to form a linear array to achieve high gain. [0003] At present, the feeding methods of high-gain omnidirectional antennas widely used at home and abroad are mainly divided into two types: series feeding and parallel feeding. In addition to multiple antenna elements, the parallel-fed omnidirectional antenna also needs an additional feeding network, which can achieve wider impedance matching. However, due to the existence of the feeding network, the out-of-roundness o...

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Problems solved by technology

However, it has disadvantages such as cumbersome assembly process, poor consistency and low reliability

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