Dual-Beam and Tri-Band SIW Leaky-Wave Antenna With Wide Beam Scanning Range Including Broadside Direction

Yunjie Geng; Junhong Wang; Zheng Li; Yujian Li; Meie Chen; Zhan Zhang

doi:10.1109/ACCESS.2019.2957763

IEEE Access (Jan 2019)

Dual-Beam and Tri-Band SIW Leaky-Wave Antenna With Wide Beam Scanning Range Including Broadside Direction

Yunjie Geng,
Junhong Wang,
Zheng Li,
Yujian Li,
Meie Chen,
Zhan Zhang

Affiliations

Yunjie Geng: ORCiD; Key Laboratory of All Optical Network and Advanced Telecommunication Network of MOE, Beijing Jiaotong University, Beijing, China
Junhong Wang: ORCiD; Key Laboratory of All Optical Network and Advanced Telecommunication Network of MOE, Beijing Jiaotong University, Beijing, China
Zheng Li: ORCiD; Key Laboratory of All Optical Network and Advanced Telecommunication Network of MOE, Beijing Jiaotong University, Beijing, China
Yujian Li: ORCiD; Key Laboratory of All Optical Network and Advanced Telecommunication Network of MOE, Beijing Jiaotong University, Beijing, China
Meie Chen: ORCiD; Key Laboratory of All Optical Network and Advanced Telecommunication Network of MOE, Beijing Jiaotong University, Beijing, China
Zhan Zhang: ORCiD; Key Laboratory of All Optical Network and Advanced Telecommunication Network of MOE, Beijing Jiaotong University, Beijing, China

DOI: https://doi.org/10.1109/ACCESS.2019.2957763
Journal volume & issue: Vol. 7
pp. 176361 – 176368

Abstract

Read online

In this letter, a novel dual-beam and tri-band leaky-wave antenna (LWA) based on substrate integrated waveguide (SIW) structure is proposed, which has the capability of wide beam scanning range including broadside direction. The antenna consists of two kinds of periodic structures which can excite two -1st spatial harmonic waves and result in two radiation beams simultaneously. Through theoretical dispersion diagram analysis of the unit cells of two periodic structures and by applying the techniques of impedance-matching and reflection-cancelling, the open-stopbands at broadside are suppressed. Then the main beam of the proposed LWA can scan from backward to forward through broadside when frequency changes. Moreover, a tri-band application can be achieved in the dual-beam antenna by optimization of the second periodic structure. The measured results validate that the proposed SIW LWA has three operating frequency bands. In band 1 from 8.6 to 9.2 GHz, there is one beam scanning from 42° to 71° in the forward, in band 2 from 10 to 12 GHz, there is one beam scanning from -40° to 4° in the backward, and in band 3 from 12.5 to 15 GHz, there is a dual-beam scanning from -55° to 54° including broadside direction, which show good agreements with the simulated results.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords