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Circularly Polarized Transmitarray Antennas at Ka-Band

Abstract : This letter presents the simulation, optimization, and demonstration of a collimated-beam transmitarray and a quad-beam transmitarray operating at Ka-band. Both transmitarrays are based on a 3 bit unit cell implementing both phase-shift and linear-to-circular polarization conversion functions. The collimated-beam transmitarray presents a measured gain of 33.8 dBi (corresponding to an aperture efficiency of 51.2%) and a 3 dB gain bandwidth larger than 15.9%. The quad-beam transmitarray phase distribution has been optimized by a genetic algorithm code coupled with an analytical tool. The array is designed to radiate four beams at θ0 = ± 25° in the horizontal and vertical planes at the frequency of optimization. © 2002-2011 IEEE.
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Submitted on : Friday, September 14, 2018 - 2:50:33 PM
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F. Diaby, A. Clemente, K.T. Pham, R. Sauleau, L. Dussopt. Circularly Polarized Transmitarray Antennas at Ka-Band. IEEE Antennas and Wireless Propagation Letters, Institute of Electrical and Electronics Engineers, 2018, 17 (7), pp.1204-1208. ⟨10.1109/LAWP.2018.2839021⟩. ⟨hal-01874632⟩



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