Triband Circularly Polarized Koch Fractal Boundary Microstrip Antenna

被引：62
|
作者：
Reddy, V. V. [1 ]
Sarma, N. V. S. N. [1 ]
机构：
[1] Natl Inst Technol Warangal, Elect & Commun Engn Dept, Warangal 506004, Andhra Pradesh, India
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2014年 / 13卷
关键词：
Axial ratio; circular polarization; fractal; triband; DUAL-BAND; PATCH ANTENNA; SLOT ANTENNA;
D O I：
10.1109/LAWP.2014.2327566
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 novel single-layer single-probe-feed asymmetrical fractal boundary microstrip antenna is considered for triband circular polarization (CP) operation. Four different structures-without-slot (Ant1), rectangular (Ant2), fractal (Ant3), optimized-fractal-slot (Ant4)-are studied for multiband CP radiation. Perturbation in the structure for triband CP radiation is introduced by employing optimized asymmetrical Koch fractal curves as boundaries of a square patch and embedded rectangular slot. The generated 3-dB axial-ratio bandwidths of Ant 4 are 3.2%, 1.6%, and 3.0% at operating frequencies around 2.45, 3.4, and 5.8 GHz, respectively. Measured results that are in close agreement with the simulation results demonstrate that the proposed antenna is well suited for the WLAN/WiMAX wireless applications.
引用
收藏
页码：1057 / 1060
页数：4
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