Improvement of characteristics of microstrip antennas using unbalanced structures

Author

Li, Jian-Ying ; Oo, Zaw Zaw ; Li, Le-Wei ; Kooi, Pang-Shyan ; Leong, Mook-Seng

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore

Volume

1

Issue

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

71

Lastpage

73

Abstract

To improve the characteristics of microstrip antennas, an idea of utilizing unbalanced structures in the analysis and design is proposed. In the characterization, the method of moments procedure is employed and the Rao-Wilton-Glisson (1982) basis functions are used in the analysis of microstrip patch antenna. Green´s functions in closed form are used, so the analysis is quite fast and efficient and the design result is very useful. The frequency dependent characteristics of a single-patch and two double-patch antennas are analyzed. The design results show that the voltage standing-wave ratio of double-patch antennas can be significantly improved using unbalanced structures.

Keywords

Green´s function methods; integral equations; method of moments; microstrip antennas; MPIE; MoM; Rao-Wilton-Glisson basis functions; Sommerfeld-type integrals; antenna design; closed form Green´s functions; double-patch antenna; frequency dependent characteristics; method of moments; microstrip patch antenna; mixed-potential integral equation; moments procedure; single-patch antenna; unbalanced structures; voltage standing-wave ratio; Bandwidth; Circuits; Dielectric constant; Frequency dependence; Microstrip antenna arrays; Microstrip antennas; Microstrip components; Moment methods; Patch antennas; Voltage;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2002.805347

Filename

1046121