Dual-Band Antenna With 2.4 GHz Omnidirectional and 5.8 GHz Pattern-Reconfigurable Radiation Modes

被引：0
作者：
Lin, Sen [1 ]
Cao, Yunfei [1 ]
Chen, Fangjiong [1 ]
Xue, Quan [1 ]
Che, Wenquan [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangdong Prov Key Lab Millimeter Wave & Terahertz, Guangdong Hong Kong Macao Joint Lab Millimeter Wav, Guangzhou 510641, Guangdong, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2025年 / 24卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Antenna radiation patterns; Antenna measurements; Pins; Dual band; PIN photodiodes; Reflection coefficient; Antennas; Reflector antennas; Metals; Dipole antennas; Dual-band antenna; dual-mode antenna; pattern-reconfigurable antenna; BEAM; COMPACT;
D O I：
10.1109/LAWP.2025.3531482
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：
This letter presents a dual-band, dual-mode antenna with an omnidirectional radiation pattern in the lower band (LB) and reconfigurable pattern in the upper band (UB) for wireless body area networks. The proposed antenna is composed of a monopole loaded with a metal circular patch and a crossed patch, four reconfigurable parasitic elements and a biasing circuit. The omnidirectional radiation pattern in the LB is realized by the monopole loaded with the crossed patch and shorting pins. PIN diodes are used to control the parasitic elements around the circular patch. Radiation-beam steerability in the UB is achieved by selecting one parasitic element in the desired direction as the director. The proposed antenna has a measured -10 dB operating bandwidth of 2.24 GHz to 2.70 GHz (18.6%) and 5.13 GHz to 5.89 GHz (13.8%). Realized gains in the LB and UB are about 1.95 dBi and 6.70 dBi, respectively.
引用
收藏
页码：1238 / 1242
页数：5
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