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A wide beam steering leaky-wave antenna (LWA) based on a liquid crystal (LC) phasing structure and metamaterial apertures is presented and simulated. The antenna continuously steers its beam from −48° to +44° at the fixed frequency of 13.6 GHz (Ku band) by biasing the embedded LC. As a result, the beam steering angle is 64% wider than the state-of-the-art LC-based LWAs in the Ku band to the best of our knowledge. This improvement is obtained by the design of a meander-line phasing structure as revealed from an analysis based on the array factor. The antenna design also offers compactness, lightweight, low-cost, simple beam steering mechanism, and design with much-reduced bias lines and control circuits, low bias power consumption, good power handling, good realized gain, and low sidelobes.
Publication date: 
10 Jul 2022

Elahehsadat Torabi, Danilo Erricolo, Pai-Yen Chen, Walter Fuscaldo, Romeo Beccherelli

Biblio References: 
Pages: 1586-1587
2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)