Numerical analysis of stacked dielectric resonator antennas excited by a coaxial probe for wideband applications

被引：136

作者：

Kishk, AA ^{[1
]}

Zhang, X ^{[1
]}

Glisson, AW ^{[1
]}

Kajfez, D ^{[1
]}

机构：

[1] Univ Mississippi, Dept Elect Engn, University, MS 38677 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2003年 / 51卷 / 08期

关键词：

dielectric resonator antennas (DRA); dual resonance; stacked antennas;

D O I：

10.1109/TAP.2003.814735

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：

The objective of the present study is to improve the bandwidth of the dielectric resonator antenna (DRA) excited by a coaxial probe by using a stacked DRA configuration above an infinite ground plane. The DRA is axisymmetric and a coaxial probe is placed off the antenna axis to excite the HEM11delta mode in the DRA, resulting in a broadside radiation pattern. A surface integral equation formulation and the method of moments are used for the numerical analysis. The input impedance and the far field radiation patterns have been computed and the effects of different parameters on the antenna performance have been investigated. With the proper excitation and selection of the resonator parameters, a bandwidth of 35% has been achieved for the stacked DRA configuration based on a -10 dB reflection coefficient on a 50 Omega-transmission line. An equivalent circuit model is postulated to describe the dual-resonance behavior of the stacked antenna system.

引用

页码：1996 / 2006

页数：11

共 14 条

[1] EVALUATION OF MODES IN DIELECTRIC RESONATORS USING A SURFACE INTEGRAL-EQUATION FORMULATION [J].

GLISSON, AW ;

KAJFEZ, D ;

JAMES, J .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1983, 31 (12) :1023-1029

[2] INPUT IMPEDANCE OF DIELECTRIC RESONATOR ANTENNAS EXCITED BY A COAXIAL PROBE [J].

JUNKER, GP ;

KISHK, AA ;

GLISSON, AW .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1994, 42 (07) :960-966

[3] COMPUTED MODAL FIELD DISTRIBUTIONS FOR ISOLATED DIELECTRIC RESONATORS [J].

KAJFEZ, D ;

GLISSON, AW ;

JAMES, J .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1984, 32 (12) :1609-1616

[4]

Kajfez D., 1998, DIELECTRIC RESONATOR

[5]

Kishk A., 1989, IEEE ANTENN PROPAG M, V31, P7

[6] BROAD-BAND STACKED DIELECTRIC RESONATOR ANTENNAS [J].

KISHK, AA ;

AHN, B ;

KAJFEZ, D .

ELECTRONICS LETTERS, 1989, 25 (18) :1232-1233

[7] A NUMERICAL STUDY OF A DIELECTRIC DISK ANTENNA ABOVE GROUNDED DIELECTRIC SUBSTRATE [J].

KISHK, AA ;

ZUNOUBI, MR ;

KAJFEZ, D .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1993, 41 (06) :813-821

[8] MICROSTRIP TRANSMISSION-LINE EXCITATION OF DIELECTRIC RESONATOR ANTENNAS [J].

KRANENBURG, RA ;

LONG, SA .

ELECTRONICS LETTERS, 1988, 24 (18) :1156-1157

[9] THE RESONANT CYLINDRICAL DIELECTRIC CAVITY ANTENNA [J].

LONG, SA ;

MCALLISTER, MW ;

SHEN, LC .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1983, 31 (03) :406-412

[10] RESONANT HEMISPHERICAL DIELECTRIC ANTENNA [J].

MCALLISTER, MW ;

LONG, SA .

ELECTRONICS LETTERS, 1984, 20 (16) :657-659

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