Substrate Integrated Waveguide Leaky-Wave Antenna With Wide Bandwidth via Prism Coupling

Lei Wang, José Luis Gómez-Tornero, Oscar Quevedo-Teruel

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

New communications systems require high-speed data transfer and need high frequency, wideband, and directive antennas. Leaky-wave antennas are a desirable type of antennas for millimeter and submillimeter waves, since they can produce a high directive radiation with a single feeding. The latter is an enormous advantage to reducing the cost and losses at high frequency. Despite these advantages, their dispersive nature inherently produces a beam squint effect in their radiation patterns. Here, we propose the use of a lens that compensates for the dispersion of the leaky wave, making the overall antenna broadband. This concept is demonstrated in substrate integrated waveguide technology at Ka-band, and the lens is integrated in the same technology. Full-wave simulations and experimental results are presented to demonstrate the potential of our proposal. Our manufactured prototype has more than 20% frequency bandwidth for the 3-dB pattern at φ = 31°, and the main radiating direction steers only ±0.5° from 35 to 40 GHz with a half-power beamwidth of 8°.
Original languageEnglish
Pages (from-to)3110-3118
Number of pages9
JournalIEEE Transactions on Microwave Theory and Techniques
Volume66
Issue number6
Early online date5 Apr 2018
DOIs
Publication statusPublished - Jun 2018

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