Revisiting the Generation of Cross-Polarization in Rectangular Patch Antennas: A Near-Field Approach

被引:56
作者
Bhardwaj, Shubhendu [1 ]
Rahmat-Samii, Yahya [1 ]
机构
[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90024 USA
关键词
Cross-polar radiation; antenna radiation patterns; patch antenna; microstrip antenna; near-field radiation pattern; coaxial feeding; H-plane cross-pol; near-field disturbance; MICROSTRIP ANTENNAS; ARRAY; RADIATION;
D O I
10.1109/MAP.2014.6821758
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 work, the cross-polarized radiation from a rectangular patch antenna was studied as a consequence of the asymmetries (or disturbances) in the near field of the antenna. It was shown that the asymmetry of the probe location results in asymmetry in the near fields in the vicinity of the antenna, causing high cross-polarized radiation in the H plane of the antenna. These near-field disturbances show a varying trend with the variation of the frequency or dimensional parameters of the antenna, which ultimately affects the far-field cross-polarized radiation. Having developed the near-field model of the cross-polarized radiation, this approach is then applied to two important known configurations with low cross-polarized radiation, namely, differential feeding (for a single patch antenna) and rotational feeding (for an array antenna). The new approach presented here provides an insightful, visualization-based understanding of the cross-polarized radiation from a rectangular patch antenna.
引用
收藏
页码:14 / 38
页数:25
相关论文
共 26 条
[1]  
[Anonymous], 1989, Advanced Engineering Electromagnetics
[2]  
Balanis C. A., 2011, MODERN ANTENNA HDB
[3]  
Bhalla R., 2012, IEEE INT S ANT PROP, V2, P700
[4]   A comparative study of c-shaped, e-shaped, and u-slotted patch antennas [J].
Bhardwaj, Shubhendu ;
Rahmat-Samii, Yahya .
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2012, 54 (07) :1746-1757
[6]  
Deschamps GA, 1953, 3 USAF S ANT
[7]   FAR FIELD RADIATED BY RECTANGULAR PATCH MICROSTRIP ANTENNA [J].
DUBOST, G .
ELECTRONICS LETTERS, 1982, 18 (23) :991-992
[8]   DUAL POLARIZATION ANTENNA-ARRAYS WITH SEQUENTIALLY ROTATED FEEDING [J].
HALL, PS .
IEE PROCEEDINGS-H MICROWAVES ANTENNAS AND PROPAGATION, 1992, 139 (05) :465-471
[9]   MODEL FOR CALCULATING THE RADIATION-FIELD OF MICROSTRIP ANTENNAS [J].
HAMMER, P ;
VANBOUCHAUTE, D ;
VERSCHRAEVEN, D ;
VANDECAPELLE, A .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1979, 27 (02) :267-270
[10]   MICROSTRIP ANTENNAS [J].
HOWELL, JQ .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1975, AP23 (01) :90-93