Modified Series-Fed Two-Dipole-Array Antenna With Reduced Size

被引：15
|
作者：
Yeo, Junho [1 ]
Lee, Jong-Ig [2 ]
机构：
[1] Daegu Univ, Sch Comp & Commun Engn, Gyeongbuk 712714, South Korea
[2] Dongseo Univ, Dept Elect Engn, Pusan 617716, South Korea
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2013年 / 12卷
关键词：
Mobile communication; series-fed two-dipole array (STDA); size reduction; stable gain; tapered transitions; top loading; BROAD-BAND; DIPOLE; DESIGN;
D O I：
10.1109/LAWP.2013.2245297
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 letter, a modified series-fed two-dipole-array (STDA) antenna with reduced size is proposed for mobile communication applications. The proposed antenna consists of two modified dipole elements with different lengths and a modified ground plane, and these are serially connected through a coplanar strip (CPS) line. To reduce the lateral size of a conventional STDA antenna, rectangular patch-shaped top loading is employed for the two dipole elements, and a grooved ground plane is used by adding a patch at both ends of the ground plane. Tapered transitions are also used between the top-loading patches and CPS lines to improve the impedance matching of the antenna and, therefore, to increase the gain. A proposed antenna covering a frequency band of 1.7-2.7 GHz with a gain >5 dBi is designed and fabricated on an FR4 substrate. The total width of the fabricated prototype of the proposed antenna is reduced by approximately 14.3% compared to the conventional STDA, and it presents a 49.7% bandwidth in the range of 1.68-2.79 GHz and a stable gain of 5.86-6.13 dBi, which is similar to that of the conventional STDA antenna. Moreover, a front-to-back ratio is improved by 2.07-5.66 dB.
引用
收藏
页码：214 / 217
页数：4
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