Frequency-Reconfigurable Rectangular Dielectric Resonator Antenna

被引：31

作者：

Danesh, S. ^{[1
]}

Rahim, S. K. A. ^{[1
]}

Abedian, M. ^{[1
]}

Khalily, M. ^{[1
]}

Hamid, M. R. ^{[2
]}

机构：

[1] Univ Teknol Malaysia, Fac Elect Engn, Wireless Commun Ctr, UTM Johor, Utm Johor 81310, Johor, Malaysia

[2] Univ Teknol Malaysia, Fac Elect Engn, UTM MIMOS Ctr, Utm Johor 81310, Johor, Malaysia

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2013年 / 12卷

关键词：

Dielectric resonator antenna (DRA); p-i-n diode; reconfigurable;

D O I：

10.1109/LAWP.2013.2285649

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 coplanar waveguide (CPW) reconfigurable dielectric resonator antenna (DRA) is presented and investigated. The DRA is capable of frequency tuning at three different frequency bands between 3.45 and 6.77 GHz. The overall size of the antenna is 50 57 mm. The dielectric material is a rectangular block of ceramic with a permittivity of 15. Two switches, implemented using p-i-n diodes, are located on the lines of a feed network that is connected to the dielectric element. Single-band modes with impedance bandwidths of 8% and 16% are achieved by switching "ON" one of three connecting feedline networks, whereas a wide band, with an impedance bandwidth of 65%, is achieved by switching "ON" two connecting lines. Frequencies in the single band can be independently controlled using switch positions without affecting the wideband mode. The prototype has a low profile with a dielectric resonator thickness of 4 mm. The characteristics of this antenna were studied, and good agreement was found between the numerical and measured results.

引用

页码：1331 / 1334

页数：4

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