In this letter, a extremely low profile dual-band patch antenna is proposed for 5G terminal applications. Target bands are part of the 5G N78 band (3.4-3.6 GHz) and part of the 5G N79 band (4.8-5.0 GHz). Use the two resonant modes of the half-mode patch and adjust their size to separate the resonant frequencies. Loads parasitic patches to extend their efficiency and impedance bandwidths. In order to make the antenna occupy less space, two pairs of perpendicular slots are etched in the middle of the antenna to extend the current path and reduce the resonance frequencies. The average efficiency of the designed antenna is higher than most of the reported patch antennas. Physical fabrication and device testing were performed to prove the feasibility of the proposed antenna.
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Lu et al. (2024) studied this question.
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