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Wideband circularly-polarized 3-bit transmitarray antenna in Ka-band

Abstract : This paper describes the design of a 3-bit circularly-polarized transmitarray antenna operating in Ka-band. The array is based on a unit-cell composed of two U-shaped slot loaded patch antennas, which are connected by a metallized via hole and printed on two identical dielectric substrates. The latter are separated by a ground plane and bonded by a CuClad 6700 film. A 400-element transmitarray is simulated and demonstrates a maximum gain of 27.5 dBi, an aperture efficiency of 47.8% at 29 GHz. The 1-dB gain-bandwidth (LHCP) is equal to 14.8% at 29 GHz. The 1-dB axial ratio bandwidth covers the frequency band between 27-32 GHz. A good agreement is obtained between the full-wave simulation results performed with Ansys HFSS and the ones obtained using our hybrid in-house simulation tool. The impact of phase quantization on the performance of a 40×40-element array is also presented. The corresponding radiation patterns (co- and cross-polarization components) are compared to the masks defined by the European International Standardization Institutions (ETSI) in the case of point-to-point applications. © 2017 Euraap.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01622486
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, October 24, 2017 - 2:12:46 PM
Last modification on : Monday, October 5, 2020 - 9:50:26 AM

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F. Diaby, A. Clemente, L. Di Palma, L. Dussopt, K. Pham, et al.. Wideband circularly-polarized 3-bit transmitarray antenna in Ka-band. 11th European Conference on Antennas and Propagation, EUCAP 2017, Mar 2017, Paris, France. ⟨10.23919/EuCAP.2017.7928661⟩. ⟨hal-01622486⟩

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