Compact Broadband Circularly Polarized Microstrip Antenna over Artificial Ground Structure

被引：0
|
作者：
Ma, Rongjie [1 ]
Wu, Qi [1 ]
Yin, Jiexi [1 ]
Yu, Chen [1 ]
Wang, Haiming [1 ]
Hong, Wei [1 ]
机构：
[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
2018 IEEE INTERNATIONAL WORKSHOP ON ANTENNA TECHNOLOGY (IWAT) | 2018年
基金：
中国国家自然科学基金;
关键词：
Terms circularly polarized antenna; broadband; size miniaturization; artificial ground structure; PATCH ANTENNA; DIPOLE ANTENNA; BANDWIDTH; PROBE;
D O I：
暂无
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：
A compact broadband circularly polarized (CP) antenna over the artificial ground structure (AGS) is investigated. The CP radiation patch is comprised of a truncated corner square patch loaded by an extended strip. The AGS which is comprised of a 4 x.4 slot-loaded square metal patches changes the reflection phase in accordance with the polarization state of the incident wave. Broad bandwidth including impedance bandwidth, 3-dB axial ratio (AR) bandwidth, and gain bandwidth is achieved by properly combining the transmitted wave from the patch antenna and the reflected wave from the AGS. The measured results show that the AR bandwidth of the antenna is 14.0% (2.84-3.26 GlIz), while the impedance bandwidth is 41.3% (2.48-3.72 GHz). The antenna gain at boresight is 5.35 dBic at 2.9 GHz. The gain fluctuation is less than 1 dB in the whole operating bandwidth. The overall antenna volume is 0.40 x 0.40 x 0.048 lambda(3)(0) at 3 GHz.
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收藏
页数：4
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