Micro-strip antenna unit and array thereof

Abstract

The invention discloses a micro-strip antenna unit and an array thereof and belongs to antennas. The antenna unit comprises a first dielectric substrate and a second dielectric substrate positioned over the first dielectric substrate, wherein a primary radiation patch is arranged over the first dielectric substrate, a parasitic patch and a covering dielectric slab are arranged over the second dielectric substrate, an earth plate is arranged under the first dielectric substrate, and a baffle board is arranged under the earth plate. Through arrangement of the parasitic patch in the micro-strip antenna unit, under the assistance of the covering dielectric slab, resonance gain is achieved, the grain value of the micro-strip antenna is improved effectively; aperture-coupled feed of an H-shaped groove and direct feed of the primary irradiation patch are not performed in the same layer of the antenna unit, therefore the isolation is effectively improved, a micro-strip feed network is simple after array combination of the antenna unit, and the using loss is low; and simultaneously, the micro-strip antenna unit and the array can be widely applied to aviation airborne computer systems, and are simple in structure, suitable for industrial production and easy to popularize.

Description

technical field [0001] The present invention relates to an antenna, and more specifically, the present invention mainly relates to a microstrip antenna unit and an array thereof. Background technique [0002] Microstrip antenna (microstrip antenna) is to attach a thin metal layer on one side of a thin dielectric substrate as a ground plane, and make a metal patch of a certain shape by photolithography on the other side, using a microstrip line or a coaxial probe For antennas composed of patch feeds, there have been some studies in this field on improving the gain value and the isolation of microstrip antennas in dual-polarization feeds, such as adding parasitic patches or using a double-patch unit structure Improve the antenna gain, compared with a single patch antenna, the gain value is significantly improved; another example is to improve the back cavity structure of the microstrip antenna, thereby increasing the antenna gain; and the existing high isolation dual polarizat...

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Problems solved by technology

[0003] One of the purposes of the present invention is to provide a microstrip antenna unit and its array in view of the above-mentioned deficiencies, in order to solve the problem that the gain value of the microstrip antenna in the prior art and the isolation degree during dual-polarized feeding cannot meet the requirements of use. And technical problems such as large loss in use

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