Design and Demonstration of an Electronically Scanned Reflectarray Antenna at 100 GHz using Multiresonant Cells Based on Liquid Crystals

Gerardo Perez-Palomino, Mariano Barba, José A. Encinar, Robert Cahill, Raymond Dickie, Paul Baine, Michael Bain

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)
443 Downloads (Pure)

Abstract

The design, fabrication, and measured results are presented for a reconfigurable reflectarray antenna based on liquid crystals (LCs)which operates above 100 GHz. The antenna has been designed to provide beam scanning capabilities over a wide angular range, a large bandwidth,and reduced side-lobe level (SLL). Measured radiation patterns are in good agreement with simulations, and show that the antenna generates an electronically steerable beam in one plane over an angular range of 55◦ in the frequency band from 96 to 104 GHz. The SLL is lower than −13 dB for all the scan angles and −18 dB is obtained over 16% of the scan range. The measured performance is significantly better than previously published results for this class of electronically tunable antenna, and moreover, veri-fies the accuracy of the proposed procedure for LC modeling and antenna design.
Original languageEnglish
Pages (from-to)3722-3727
Number of pages6
JournalIEEE Transactions on Antennas and Propagation
Volume63
Issue number8
Early online date18 May 2015
DOIs
Publication statusPublished - Aug 2015

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