A compact low-profile wideband omni-directional microstrip patch loading composite right/left-handed transmission line

Author

Duan Zhang-shan ; Qu Shao-bo ; Zhang Jie-qiu ; Yu, Wu

Author_Institution

Coll. of Sci., Air Force Eng. Univ., Xi´´an

fYear

2008

fDate

9-12 Nov. 2008

Firstpage

312

Lastpage

315

Abstract

A compact and low-profile wideband omni-directional microstrip patch antenna is proposed. The antenna is loaded by a novel spiral composite right/left-handed (CRLH) transmission line (TL), which is realized by replacing the interdigital capacitors of the conventional CRLH-TL with the spiral inductors. The antenna is composed with a four arms spiral line, a circle patch, four stubs connecting the patch and the ground. The antenna is fed by a standard SMA coaxial connector from the bottom. The bandwidth of the proposed antenna is up to 25.3% (VSWR<2). The antenna has a field pattern with a vertical electric field polarization, and has an omni-directional radiation pattern. The omni-directional radiation pattern is stable in desired operating band.

Keywords

antenna radiation patterns; broadband antennas; metamaterials; microstrip antennas; transmission lines; compact antenna; composite right/left-handed transmission line; interdigital capacitors; low-profile antenna; microstrip patch antenna; omni-directional radiation pattern; spiral inductors; standard SMA coaxial connector; vertical electric field polarization; wideband antenna; Antenna radiation patterns; Broadband antennas; Capacitors; Loaded antennas; Microstrip antennas; Patch antennas; Spirals; Transmission line antennas; Transmission lines; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Metamaterials, 2008 International Workshop on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-2608-9

Electronic_ISBN

978-1-4244-2609-6

Type

conf

DOI

10.1109/META.2008.4723604

Filename

4723604