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A Wideband Circularly Polarized Stacked Patch Antenna Using a DGS-Enhanced Two-Stage Coupler for Sub-6 GHz Applications

Punmanut Meedech; Sen Wang; Chatrpol Pakasiri

Journal of Low Power Electronics and Applications, Vol. 16 No. 3 · 2026 · Inggris · DOAJ Scopus

This paper presents a wideband circularly polarized (CP) stacked patch antenna for 5G Sub-6 GHz applications. A major challenge in wideband dual-feed antennas is the fabrication limit caused by standard chemical etching and mechanical milling processes for extremely narrow high-impedance microstrip…