Gap Waveguide-Based Single-Layer Leaky-Wave Antenna Enabling Mechanical Beam Steering

IEEE Antennas and Wireless Propagation Letters 2026

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Authors: Saeid Ghorbani, Ali Farahbakhsh, Majedehsadat Rad, Amirmasood Bagheri, Seyed Ehsan Hosseininejad
DOI: 10.1109/lawp.2026.3663256
Cited by: 0
References: 25

Abstract

This work presents a compact, low-profile, and cost-effective gap waveguide leaky-wave antenna that enables beam steering at a fixed frequency. The key idea is to vary the waveguide width to tune the propagation constant, which in turn changes the pointing direction of the radiated main beam. Numerical simulations together with measurements have been carried out to validate the concept. The findings confirm that the antenna functions over the 14–16 GHz range, achieves a scanning angle of 50°, and delivers a maximum gain of 16.5 dBi.

Fields of Study & Subjects

Microwave Engineering and Waveguides Antenna Design and Analysis Advanced Antenna and Metasurface Technologies

Publication details

Journal / source
IEEE Antennas and Wireless Propagation Letters
Volume
25
Issue
4
Pages
1747–1751
Publication date
10 February 2026
Language
EN