Scanning rate enhancement in substrate integrated waveguide periodic leaky wave antenna with continuous beam scanning using delay lines

Dhruv Chaudhary; Rahul Agrawal; Suresh C. Gupta

doi:10.1515/freq-2020-0055

Article

Scanning rate enhancement in substrate integrated waveguide periodic leaky wave antenna with continuous beam scanning using delay lines

Dhruv Chaudhary , Rahul Agrawal and Suresh C. Gupta

Published/Copyright: September 18, 2020

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From the journal Frequenz Volume 74 Issue 11-12

Abstract

In this paper, the scanning rate (SR) is enhanced for substrate integrated waveguide (SIW) based periodic leaky wave antenna (LWA) with continuous beam scanning. Delay line is inserted in the SIW based periodic LWA to modify the group delay profile which in turn increase the SR of the SIW based periodic LWA. Addition of the delay line enhances the SR of the SIW LWA to approximately three times from 15.6° to 47° per GHz. The prototype of the proposed LWA is fabricated and experimentally measured. The simulated and measured results show that the proposed LWA scans the angular range from −30° to +27° within a frequency span of only 1.2 GHz from 14.8 to 16 GHz (relative bandwidth of 7.7 %).

Keywords: continuous beam scanning; delay line; enhanced scanning rate (SR); group delay; periodic leaky wave antenna (LWA); substrate integrated waveguide (SIW)

Corresponding author: Rahul Agrawal, Department of ECE, DIT University, Dehradun, India, E-mail: rahul1@dituniversity.edu.in

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-05-09

Accepted: 2020-07-09

Published Online: 2020-09-18

Published in Print: 2020-11-26

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Articles in the same Issue

https://doi.org/10.1515/freq-2020-0055

Keywords for this article

continuous beam scanning; delay line; enhanced scanning rate (SR); group delay; periodic leaky wave antenna (LWA); substrate integrated waveguide (SIW)