Improved Isolation Between Ports of MultiMode Antenna with a Reconfigurable Pattern by Decoupling Network

Date

2023-01-01

Author

Tonga, Muhammed
Alatan, Lale
Aydın Çivi, Hatice Özlem

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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In this study, a decoupling network is designed and implemented to a concentric circular patch with a ring antenna whose two ports are strongly coupled. The ports of the antenna are excited with phase differences to have different radiation modes at same frequency for pattern diversity. Strong coupling between the ports is inevitable and a decoupling network consisting of a lumped element is inserted between the ports to improve the isolation. With inductive and capacitive decoupling network designs, the ports of the antenna are decoupled. Lower than -20 dB isolation (|S21|) is achieved which improves active |S11| substantially. As a result, realized gain values of the antenna are increased by 2-3 dB.

Subject Keywords

decoupling network, gain improvement, isolation enhancement, pattern reconfigurable antenna

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85162212920&origin=inward
https://hdl.handle.net/11511/104642

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Department of Electrical and Electronics Engineering, Conference / Seminar