首页|Design of Differential Multi-Point Feeding Dual-Polarized SISL Antenna Based on CM Analysis
Design of Differential Multi-Point Feeding Dual-Polarized SISL Antenna Based on CM Analysis
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Dual-polarized antennas are required in the current mobile communication to increase the channel capacity and reducing multi-path effects.Utilizing characteristic mode(CM)analysis,this paper presents a five-patch substrate integrated suspended line(SISL)antenna with suppressed unwanted higher-order modes,and achieves an enhanced bandwidth by using differential multi-point feeding(MPF)systems.Compared to single-point feeding systems,the proposed dual-polarized SISL antenna with the MPF system demonstrates a bandwidth 1.87 times wider.The novel SISL feeding system incorporates two pairs of differentially-fed branch line feed structures.A prototype of the proposed differential-fed antenna is fabricated and measured,showing good agreement between simulated and measured results.The dual-polarization SISL antenna can achieve realized gain from 8.1 dBi to 10.8 dBi within a working frequency from 3.17 GHz to 3.61 GHz(12.98％).Moreover,utilizing low-cost substrates,the proposed SISL antenna has the potential for 5G applications.
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