Cylindrical air spaced high gain dielectric resonator antenna for ultra-wideband applications

被引：0
|
作者：
Sachin Kumar Yadav
Amanpreet Kaur
Rajesh Khanna
机构：
[1] Thapar Institute of Engineering and Technology (Deemed to be University),Electronics and Communication Engineering Department
来源：
Sādhanā | 2020年 / 45卷
关键词：
Hollow cylindrical dielectric; quarter wave fed; rectangular dielectric resonator antenna; metallic strips; defective ground structure;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A new geometry of ultra-wideband (UWB) hollow dielectric resonator antenna (DRA) has been designed, simulated, and fabricated. The antenna consists of a rectangular dielectric resonator and excited by a transformer type microstrip feedline. A hollow cylindrical-shaped structure is extracted from a rectangular DR to improve the gain and impedance bandwidth of the antenna. The present work shows that the shifting within the UWB range along with the gain enhancement is observed by increased diameter of the hollow structure and the use of defective ground structure in the ground plane. The antenna provides four different radiating modes, namely TE11δ at 3.8 GHz, TE22δ at 6.4 GHz, TE231Z at 8.8 GHz, and TE33δ at 10 GHz that support to give widen impedance bandwidth. The simulated and measured results are in good agreement as an impedance bandwidth of 104.09% (3.28 to 10.4 GHz) and 103.86% along with a peak gain of 7.2 dB.
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