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Gain‐improved double‐slot LTSA with conformal corrugated edges
Author(s) -
Liu YaQiao,
Liang JianGang,
Wang YaWei
Publication year - 2017
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21133
Subject(s) - slot antenna , conformal map , directivity , antenna gain , optics , bandwidth (computing) , antenna aperture , physics , antenna factor , antenna (radio) , antenna measurement , radiation pattern , computer science , telecommunications , geometry , mathematics
In this article, a novel double‐slot linearly tapered slot antenna with conformal corrugated edges, is proposed. By using double‐slot structure, the E ‐plane aperture field of the proposed antenna is more like a plane wave, which helps to improve the directivity of the antenna. Meanwhile, a novel corrugated edge is designed. This conformal corrugated edge can cover all the outer edges of the antenna which has a better improvement of the impedance bandwidth compared with the rectangle corrugated edge. Additionally, according to the theory of microwave network, this article analyzes the reason of bandwidth enhancement realized by double‐slot structure. The proposed antenna provides 145% fractional bandwidth from 3.5 GHz to 22 GHz. The gain of the proposed antenna is more than 12 dB from 6.5 GHz to 21 GHz, and more than 8 dB at the whole operating band.