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7. Design of a Compact Four-Way Dual Polarization Orthomode Power Divider for Multiport Radiating Elements

Author

Tubau, Segolene, Stoumpos, Charalampos, Fraysse, Jean -Philippe, Cottin, Adrien, Sauleau, Ronan, Potier, Patrick, Legay, Hervé, Thales Alenia Space (TAS), THALES, Institut d'Électronique et des Technologies du numéRique (IETR), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), DGA Maîtrise de l'information (DGA.MI), Direction générale de l'Armement (DGA), MERLIN laboratory - Direction Generale de l'Armement (DGA), Institut d'Electronique et de Telecommunications de Rennes (IETR), European Commission under H2020 project REVOLVE [MSCA-ITN2016-722840], Thales Alenia Space [Toulouse] (TAS), THALES [France], Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Université de Nantes (UN)-Université de Rennes 1 (UR1)

Subjects
mutiport antenna exciter, [SPI]Engineering Sciences [physics], dual-polarization, Waveguide power-divider, orthomode transducer
Abstract

International audience; The concept and design of a novel compact power divider exhibiting dual-polarization and its use as a feeder for a Fabry-Perot cavity antenna comprising 4 input ports is presented. The dual and in-phase polarization on each of the four circular waveguides is achieved by using 4 five-port turnstile junctions accompanied by two 8-by-1 power division structures. The power divider ends up to two ports (each for one polarization) so that it can be used as a feeding network for an antenna array. The design is fully metallic, a feature that makes this feeder an ideal candidate for satellite applications. The design band is 3.65 to 3.95 GHz, presenting a Return Loss better than 20 dB and an input-output isolation (orthogonal modes) better than 30 dB. The exciter is further connected to Fabry-Perot cavity antenna and the simulation results of the total feed are presented.

Published
2019

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