Open-stopband suppression and cross-polarization reduction of a substrate integrated waveguide leaky-wave antenna

Debabrata K. Karmokar*, Shu-Lin Chen, Pei-Yuan Qin, Y. Jay Guo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Most leaky-wave antennas (LWAs) suffer from significant gain degradation when the main beam points towards broadside. This is because an open stopband (OSB) restricts broadside radiation. In this paper, a method to suppress the OSB of a periodic substrate integrated waveguide (SIW) LWA is discussed. By simultaneously introducing a slot and a partially radiating wall in each unit cell the impedance in the OSB region has been matched and hence a continuous beam scan through broadside is achieved. The developed LWA can scan its main beam from 74° continuously to +40° when the frequency varies from 7.45 to 10.55 GHz, with a broadside gain and a level of cross-polarization for the broadside beam of 10.8 dBi and 21.37 dB, respectively.

Original languageEnglish
Title of host publication2019 URSI Asia-Pacific Radio Science Conference (AP-RASC)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)9789082598759, 9789082598742
ISBN (Print)9781538685518
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event2019 URSI Asia-Pacific Radio Science Conference, AP-RASC 2019 - New Delhi, India
Duration: 9 Mar 201915 Mar 2019

Conference

Conference2019 URSI Asia-Pacific Radio Science Conference, AP-RASC 2019
CountryIndia
CityNew Delhi
Period9/03/1915/03/19

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