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A Novel Dual-Polarized Continuous Transverse Stub Antenna Based on Corrugated Waveguides - Part II: Experimental Demonstration

Abstract : We present the experimental validation of the dual-mode, polarization-agile parallel-fed continuous transverse stub (CTS) antenna architecture introduced in Part I of this two-part paper. The Ka-band dual-mode CTS array described in Part I is characterized when it radiates in horizontal and vertical polarization. To this end, it is combined with two different quasi-optical beamformers operating in a quasi-transverse electromagnetic (quasi-TEM) and in a quasi-transverse electric (quasi-TE 1 ) mode, respectively. The scanning capabilities of both multibeam antenna systems are demonstrated. The CTS array and its feed network comprising corrugated parallel-plate waveguides (CPPWs) are fabricated by additive manufacturing. Measurements show that the dual-polarized CTS antenna works between 29 and 32 GHz in a field of view of about 45°, achieving a peak gain of 31.3 dBi and very low cross polarization. These promising results pave the way for the realization of dual-circularly polarized beam-scanning antennas with application to broadband and compact Ka-band ground terminals.
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https://hal.archives-ouvertes.fr/hal-03164071
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Monday, March 29, 2021 - 11:38:40 AM
Last modification on : Wednesday, April 27, 2022 - 4:32:47 AM
Long-term archiving on: : Wednesday, June 30, 2021 - 6:23:33 PM

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M. Smierzchalski, F.F. Manzillo, M. del Mastro, N. Capet, B. Palacin, et al.. A Novel Dual-Polarized Continuous Transverse Stub Antenna Based on Corrugated Waveguides - Part II: Experimental Demonstration. IEEE Transactions on Antennas and Propagation, 2021, 69 (3), pp.1313-1323. ⟨10.1109/TAP.2020.3037809⟩. ⟨hal-03164071⟩

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