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Communication Dans Un Congrès Année : 2023

Mutual coupling reduction through choke structures in a Slotted Waveguide Antenna Array

Résumé

This article presents a comprehensive study on reducing mutual coupling in a slotted waveguide antenna array (SWAA), operating in the X band. The objective is to limit such parasitic coupling effects on radiation pattern performances. Optimised choke structures are inserted between adjacent slots sub-arrays in order to control surface currents distribution. Simulation results exhibit a remarkable reduction on isolation between adjacent waveguides. This induces an overall performance improvement in terms of main beam and side lobes control. Furthermore, using field calculator on HFSS™, the efield levels of each slot are extracted. The plus points and drawbacks of the choke structure on the radiation pattern are then explained.
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Dates et versions

hal-04342506 , version 1 (13-12-2023)

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Shandipsing Robee, J Ph Coupez, Christian Person, Anne-Charlotte Amiaud, Thomas Merlet. Mutual coupling reduction through choke structures in a Slotted Waveguide Antenna Array. CAMA 2023: IEEE Conference on Antenna Measurements and Applications, IEEE, Nov 2023, Genes, Italy. ⟨10.1109/CAMA57522.2023.10352845⟩. ⟨hal-04342506⟩
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