Low-sidelobe antenna array based on micro-strip ridge gap waveguide unequal power divider network

Abstract

The invention discloses a low-sidelobe antenna array based on a micro-strip ridge gap waveguide unequal power divider network. The low-sidelobe antenna array is composed of a radiation layer dielectric plate, a gap layer, and a feeder layer dielectric plate. An electrical wall formed by plated through holes in a radiation dielectric layer and 2*2 radiation slots constitute back cavity antenna sub-arrays, and the sub-arrays are arranged periodically to form a radiation antenna array. An underlying unequal power divider network feeds power to the radiation antenna array via a coupling slot. There is an air gap of certain height between the feeder layer dielectric plate and the radiation layer dielectric plate. By using the low-sidelobe antenna array based on a micro-strip ridge gap waveguide unequal power divider network, the amplitude weighted distribution and phase matching problems of the micro-strip ridge gap waveguide unequal power divider network are solved. Moreover, the low-sidelobe antenna array has such advantages as simple structure, easy integration, simple processing, small size, wide bandwidth, low insertion loss and stable structural performance.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a low sidelobe antenna array based on a microstrip ridge gap waveguide unequal power dividing and feeding network. Background technique [0002] For the millimeter wave band, especially the frequency band above 60 GHz, the traditional microstrip line and coplanar waveguide and other planar transmission lines will have higher insertion loss due to dispersion and loss of dielectric materials, while the traditional rectangular waveguide and coaxial transmission line in The millimeter wave band has the problems of complex machining technology, high cost, and low integration. [0003] In 2009, Professor P.-S.Kildal from Sweden published "Waveguides based on local metamaterials in the gap between parallel metal plates" on IEEE Antenna and Wireless Propagation Letters (AWPL) 2009, Vol. 8, pp. 84-87 (Local metamaterial-based waveguides in gaps between parallel metal plates)” propose...

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Problems solved by technology

[0005] It can be seen from the above that although the prior art realizes the antenna array design of the microstrip ridge gap waveguide as the feeding network, the above-mentioned articles and the existing published articles and patents do not mention the unequal power of the microstrip ridge gap waveguide. Realization of Distributed Feed Network and Low Sidelobe Technology

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