Experimentally Validated, Planar, Wideband, Electrically Small, Monopole Filtennas Based on Capacitively Loaded Loop Resonators

被引:104
作者
Tang, Ming-Chun [1 ,2 ]
Chen, Ying [1 ]
Ziolkowski, Richard W. [3 ,4 ]
机构
[1] Chongqing Univ, Coll Commun Engn, Chongqing 400044, Peoples R China
[2] State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
[3] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA
[4] Univ Technol Sydney, Global Big Data Technol Ctr, Ultimo, NSW 2007, Australia
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Bandwidth; efficient; electrically small antenna; filtenna; near-field resonant parasitic (NFRP) element; planar antenna; FILTERING ANTENNA; COMPACT;
D O I
10.1109/TAP.2016.2576499
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
Two planar efficient wideband electrically small monopole filtennas are presented. The first one directly evolved from a common planar capacitively loaded loop (CLL)-based filter. This filtenna possesses a flat realized gain response within the operational band and good band-edge selectivity. The second filtenna consists of a driven element augmented with a CLL structure and with slots etched into its ground plane. It expands the fractional impedance bandwidth of the first case from 6.28% up to 7.9%. It too has a gain response that remains flat over its operational bandwidth and even higher band-edge selectivity. Both filtennas are electrically small: ka < 1. The experimental results, which are in good agreement with their simulated values, demonstrate that both filtennas exhibit excellent impedance matching, high radiation efficiency, flat gain response, and steep skirts at both band edges, as well as producing monopole radiation patterns that are uniform and nearly omnidirectional in their H-planes.
引用
收藏
页码:3353 / 3360
页数:8
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