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Dual-Circularly-Polarized High-Gain Transmitarray Antennas at Ka-Band

Abstract : This paper describes the performance of dual circularly-polarized transmitarray antennas at Ka-band with independent radiation characteristics. The proposed antenna architecture consists of a dual linearly polarized (dual LP) TA panel based on the interleaving technique combined to an add-on broadband polarizer, in order to generate independent RHCP and LHCP beams. This offers both dual-LP and dual-CP operation depending on the topology of the polarizer. The LP unit-cell are designed to achieve a 3-bit phase resolution, and the dual-LP TA panel is made of two interleaved single LP sub-arrays with 52-by-52 and 53-by-53 elements operating in 45° and 135° single linear polarization, respectively. The polarizer transforms the dual-LP into dual-CP while keeping radiation independence of each polarization across Ka-band. The experimental results obtained with three different prototypes pointing up to 50° validate the proposed concepts.
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Submitted on : Friday, September 25, 2020 - 1:12:10 PM
Last modification on : Wednesday, April 27, 2022 - 4:14:00 AM
Long-term archiving on: : Thursday, December 3, 2020 - 5:49:51 PM


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Kien T. Pham, Antonio Clemente, Darwin Blanco, Ronan Sauleau. Dual-Circularly-Polarized High-Gain Transmitarray Antennas at Ka-Band. IEEE Transactions on Antennas and Propagation, 2020, 68 (10), pp.7223-7227. ⟨10.1109/TAP.2020.2996680⟩. ⟨hal-02948491⟩



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