Dual-polarized Patch Antenna of Large Frequency Tuning Range at mm-Wave Frequency Bands

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Conference article in proceedings
Date
2023
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Mcode
Degree programme
Language
en
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17th European Conference on Antennas and Propagation, EuCAP 2023, Proceedings of the European Conference on Antennas and Propagation
Abstract
In this paper, we present a dual-polarized frequency-reconfigurable patch antenna working at millimeter wave frequency bands for 5G applications. A square patch is surrounded by four metallic L-shaped walls. Four ideal varactor diodes are placed between the corners of the square patch and L-shaped walls. Frequency tunability is achieved by adjusting the capacitances of the varactor diodes. Two 50-Ω probes are used to feed the square patch which can excite two orthogonal polarizations. Operating frequency can vary from 23 GHz to 45 GHz with a 10-dB return loss when the capacitance decreases from 0.05 pF to 0.005 pF. The isolation between two polarizations is better than 13 dB over the operating frequency bands. Cross-polarization level is lower than -15 dB. In addition, the quality factor of varactor diodes is studied to demonstrate its influence on antenna efficiency.
Description
Publisher Copyright: © 2023 European Association for Antennas and Propagation.
Keywords
5G, dual polarized patch antenna, frequency reconfigurable, mm-Wave, varactor diode
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Citation
Chen , Q , Ala-Laurinaho , J , Khripkov , A , Ilvonen , J , Moreno , R M & Viikari , V 2023 , Dual-polarized Patch Antenna of Large Frequency Tuning Range at mm-Wave Frequency Bands . in 17th European Conference on Antennas and Propagation, EuCAP 2023 . IEEE , European Conference on Antennas and Propagation , Florence , Italy , 26/03/2023 . https://doi.org/10.23919/EuCAP57121.2023.10133378