Adjustable slot array antenna based on substrate integrated waveguide

Abstract

The invention discloses a substrate integrated waveguide-based adjustable slot array antenna, and the antenna comprises an upper-layer dielectric substrate and a lower-layer dielectric substrate; the upper surface and the lower surface of the upper-layer dielectric substrate are respectively covered with a first metal plate and a second metal plate; the upper dielectric substrate is provided with rows of metal holes which can form a substrate integrated waveguide structure. An SMA connector, a substrate integrated waveguide power divider and a slot array are arranged on the upper dielectric substrate, and the substrate integrated waveguide power divider is fed and shunted to the slot array through a single port and then is combined to the other port to form a traveling wave antenna; each slot unit of the slot array is provided with a rectangular metal sheet, Pin diodes are welded on the rectangular metal sheets and the first metal plate, and the Pin diodes are symmetrically arranged on the two sides of the rectangular metal sheets. The direct current bias voltage is applied to the diode to control the switch of the diode so as to control the wave beam of the antenna, the size of the antenna is reduced, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of electromagnetic microwave technology, in particular to an adjustable slot array antenna based on a substrate integrated waveguide. Background technique [0002] Antenna is an important part of a wireless communication system, and its main function is to transmit and receive wireless signals. With the rapid development of modern wireless communication technology, the requirements for the performance of the antenna itself are getting higher and higher, which is specifically reflected in the higher and higher requirements for the directivity of the antenna beam, such as the ability to realize beam scanning. [0003] In the prior art, the most common array antenna is a phased array antenna. Although the phased array antenna has the beam scanning control capability, it requires a complex feed network, a large number of phase shifters, and the distance between the array elements generally has to be half a wavelength, so...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an adjustable slot array antenna based on substrate integrated waveguide, which solves the problems of large volume, high cost and complicated beam direction control of traditional array antennas, and greatly reduces the size of the antenna while ensuring stable antenna performance. area, greatly reducing the cost of the antenna

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