Low‐Profile Miniaturized Wideband Circularly Polarized Monopole and MIMO Antennas Using Characteristic Mode Analysis for Wireless Communication

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Low‐Profile Miniaturized Wideband Circularly Polarized Monopole and MIMO Antennas Using Characteristic Mode Analysis for Wireless Communication
Title:
Low‐Profile Miniaturized Wideband Circularly Polarized Monopole and MIMO Antennas Using Characteristic Mode Analysis for Wireless Communication
Journal Title:
Radio Science
Publication Date:
18 September 2024
Citation:
Ding, Z., Cao, J., Yu, J., Nasimuddin, N., Chia, M. Y., Fei, S., & Wang, H. (2024). Low‐Profile Miniaturized Wideband Circularly Polarized Monopole and MIMO Antennas Using Characteristic Mode Analysis for Wireless Communication. Radio Science, 59(9). Portico. https://doi.org/10.1029/2024rs008030
Abstract:
Low‐profile miniaturized wideband circularly polarized (CP) monopole and multiple‐input‐multiple‐output (MIMO) antennas using characteristic mode analysis (CMA) are presented. The antennas are constructed with a microstrip feeding line, a slot, and a branch, which positions the transmission line perpendicularly to the branch to achieve CP. The CP characteristic is realized through a characteristic angle (CA) difference of approximately 90° at three mode significance (MS) intersections across four modes. CMA provides both theoretical analysis and design guidance for these antennas. The antennas were fabricated and tested, with dimensions of 0.48λ₀ × 0.48λ₀ × 0.03λ₀ and 0.47λ₀ × 0.47λ₀ × 0.03λ₀, where λ₀ represents the free‐space wavelength. Measurements indicate that the monopole antenna achieves a −10 dB impedance bandwidth (IBW) from 3.2 to 8.4 GHz (89.7% relative bandwidth), a 3 dB axial ratio bandwidth (ARBW) from 3.6 to 5.1 GHz (34.5%), and a peak gain of 6.6 dBic. The MIMO antenna has a −10 dB IBW from 3.1 to 8.2 GHz (90.3%), a 3 dB ARBW from 3.2 to 6 GHz (60.9%), and a peak gain of 5.1 dBic. Both antennas feature a low profile, ultra‐wideband IBW, broadband ARBW, and miniaturized design, making them suitable for wideband wireless communication applications.
License type:
Publisher Copyright
Funding Info:
There was no specific funding for the research done
Description:
This is the peer reviewed version of the following article: Ding, Z., Cao, J., Yu, J., Nasimuddin, N., Chia, M. Y., Fei, S., & Wang, H. (2024). Low‐Profile Miniaturized Wideband Circularly Polarized Monopole and MIMO Antennas Using Characteristic Mode Analysis for Wireless Communication. Radio Science, 59(9), which has been published in final form at http://dx.doi.org/10.1029/2024rs008030 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited
ISSN:
0048-6604
1944-799X
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