Shared-Radiator Design of Dual-Band Coplanar Base Station Antenna Array Using Cavity-Backed Slots

被引：22
作者：
Li, Yixin [1 ]
Chu, Qing-Xin [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510641, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Antenna arrays; Slot antennas; Dipole antennas; Resonators; Base stations; Metals; Dual band; Base station antenna; cavity-backed slot; dual-band antenna array; shared-radiator antenna;
D O I：
10.1109/TAP.2021.3103101
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this communication, we propose a shared-radiator design concept for dual-band base station antenna arrays. To realize the concept, novel differentially fed dual-polarized slot antenna is devised to be the high-band (HB, 3.4-3.6 GHz) radiator, while the large slot ground can be reused as the radiating arm of the low-band (LB, 0.69-0.96 GHz) crossed dipole. Reflective cavities are introduced to back the HB antennas, building clear and independent radiating environments for the two operating bands. A dual-band base station antenna array with one LB dipole antenna and four HB slot antennas is designed, by adopting the proposed integration concept. Good impedance matching (voltage standing wave ratio <1.5) and high port isolation (>29.5 dB in the LB and >26.6 dB in the HB) are obtained. Stable radiation patterns are also achieved in the two bands.
引用
收藏
页码：8985 / 8990
页数：6
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