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Dual-Band Dual-Linearly Polarized Transmitarray at Ka-Band

Abstract : We present here the design and optimization of a dual-band dual linearly-polarized transmitarray antenna with a 1bit phase resolution (i.e. two phase states with 180° of relative phase-shift). The antenna operates in both downlink and uplink K/Ka-bands (17 - 21 GHz for the lower frequency band, and 27 - 31 GHz for the upper one) and could be used for satellite communication applications. In order to implement dual-band and dual-polarization, the unit-cell consists of four orthogonal superposed U-slotted patch antennas interconnected by a common metallized via hole. A 20×20 transmitarray based on the proposed unit-cell architecture has been optimized by using our in-house tool and validated through full-wave electromagnetic simulations. The 5×5 mm2 unit-cell size allows beam scanning over a large field of view (up to 80 deg.). A maximum gain of 23.4 and 21.4 dBi has been achieved at 29.1 GHz and 19.5 GHz, respectively. The 1-dB gain bandwidth is greater than 19.8% and 12% at the lower and the upper frequency bands, respectively. © 2021 EuMA.
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Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, March 3, 2021 - 4:56:01 PM
Last modification on : Wednesday, April 27, 2022 - 4:55:31 AM

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Yazid Madi, A. Clemente, R. Sauleau. Dual-Band Dual-Linearly Polarized Transmitarray at Ka-Band. 50th European Microwave Conference, EuMC 2020, Jan 2021, Utrecht, Netherlands. pp.340-343, ⟨10.23919/EuMC48046.2021.9337962⟩. ⟨hal-03158268⟩



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