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This research aims to develop a compact antenna capable of dual-sense circular polarization at two frequency bands.

May 24, 2026Scientific ReportsOpen Access

Single-layer compact dual-band dual-circularly polarized antenna based on proximity-coupling feed patches

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Randomized trial demonstrates dual-sense circularly polarized operation in a compact antenna, indicating a novel design approach.

This research aims to develop a compact antenna capable of dual-sense circular polarization at two frequency bands.
Designed a single-layer antenna with truncated-corner patches for CP radiation.
Utilized a proximity-coupled feeding technique through a microstrip line.
Validated antenna performance at frequencies of 5.2 GHz and 6.5 GHz.
Antenna achieved operating bandwidths of 1.6% and 1.8% at respective frequency bands.
Broadside gain values exceeded 6.0 dBi, peaking at 6.5 dBi.
Successfully demonstrated dual-band operation in a compact structure.

Tran-Huy et al. (2026) studied this question.

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