Endfire Circularly-Polarized Antipodal Linearly Tapered Slot Antenna Fed by Slotted Width-Tapered SIW

被引：14

作者：

Yin, Yifan ^{[1
]}

Wu, Ke ^{[1
]}

机构：

[1] Polytech Montreal, Dept Elect Engn, Poly Grames Res Ctr, Montreal, PQ 113T 113, Canada

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2022年 / 70卷 / 04期

关键词：

Antenna arrays; Aperture antennas; Microwave antenna arrays; Optimization; Antenna radiation patterns; Antenna theory; Transmitting antennas; Antipodal linearly tapered slot antenna (ALTSA); circularly-polarized (CP); endfire; slotted leaky-wave antenna; substrate-integrated waveguide (SIW); PLANE HORN ANTENNA; WAVE-GUIDE; HIGH-GAIN; BAND; ARRAY;

D O I：

10.1109/TAP.2021.3109159

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low-profile single-layer endfire circularly-polarized (CP) antipodal linearly tapered slot antenna (ALTSA) is proposed and investigated through simulations and experiments. This antenna is a composite structure consisting of a novel width-tapered slotted substrate-integrated waveguide (SIW) and an ALTSA fed by the SIW. The former also serves as a radiator to produce vertically polarized radiation, which is crucial to achieve a fully planar endfire CP antenna when a thin substrate is deployed. Compared to the previous ALTSA fed by the SIW, this proposed antenna utilizes slots on the spare broad walls of the SIW to form an extra slotted width-tapered SIW radiator, which presents an extension of the conventional width-uniform slotted SIW. Moreover, there are no space harmonics in the slotted width-tapered SIW; it is a slow wave that produces the vertically polarized radiation. The proposed antenna is demonstrated at 28 GHz, which is one of the millimeter-wave bands specified for 5G. An experimental prototype of the antenna has an impedance bandwidth of about 9 GHz from 23.8 to 32.8 GHz and an axial ratio bandwidth of about 1.4 GHz from 27.35 to 28.75 GHz, which coincide well with simulated results.

引用

页码：2411 / 2421

页数：11

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