Low-Dispersive Leaky-Wave Antennas for mmWave Point-to-Point High-Throughput Communications

Oskar Zetterstrom, Elena Pucci, Pablo Padilla, Lei Wang, Oscar Quevedo-Teruel

Research output: Contribution to journalArticle

2 Citations (Scopus)
2 Downloads (Pure)

Abstract

In this article, we present two efficient leaky-wave antennas (LWAs) with stable radiation pattern, operating at 60 GHz. Both antennas exhibit attractive properties such as significantly reduced beam-squint, low loss, low sidelobes, high directivity, and simple manufacturing. The beam-squint of conventional LWAs is reduced by refracting the leaked waves in a dispersive lens and the low sidelobe levels are achieved by tapering the leakage rate along the aperture. Since the antennas are implemented in groove gap waveguide technology, the losses are low. The two antennas are different in terms of their asymmetric/symmetric leakage tapering with respect to the broadside direction. Both designs are optimized for low sidelobes, but since symmetry is enforced in one, the resulting performance in terms of sidelobes is suboptimal. However, in the symmetric design, multiple stable beams can be obtained, simultaneously or independently. Twenty percent bandwidth is obtained with less than ±0.5° beam-squint. In this frequency range, the gain is stable at 17 and 15 dBi for the asymmetric and symmetric designs, respectively. The designs are intended for point-to-point links in mmWave communication networks where low losses, directive beams, and low sidelobes are expected to be key features.
Original languageEnglish
Pages (from-to)1322-1331
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Volume68
Issue number3
Early online date11 Oct 2019
DOIs
Publication statusPublished - Mar 2020

Keywords

  • 5G
  • gap waveguide
  • leaky-wave antenna (LWA)
  • mmWave
  • reduced beam-squint

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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