A wideband CPW-fed patch antenna with defective ground plane

Author

Lin, Xinn-Chsng ; Wang, Ling-Tong

Author_Institution

Dept. of Electron. Eng., Nat. Taipei Univ. of Technol., Taiwan

Volume

4

fYear

2004

fDate

20-25 June 2004

Firstpage

3717

Abstract

A wideband CPW-fed patch antenna is presented. It consists of the traditional CPW-fed patch antenna and a defective ground plane. The defective ground plane consists of 49 cross-shaped elements (7×7). The inductive CPW-fed structure (no patch element) with defective ground plane generates a first resonant frequency and the traditional CPW-fed patch antenna exhibits a second resonant frequency. Wideband operation is obtained by incorporating two resonant frequencies. The 10 dB return loss bandwidth of the proposed antenna could reach about 240 MHz (1.6-1.84 GHz), which is about 13% with respect to the central frequency of 1.8 GHz. Details of the proposed antenna configuration and experimental results are discussed.

Keywords

UHF antennas; antenna feeds; antenna radiation patterns; broadband antennas; microstrip antennas; 1.6 to 1.84 GHz; CPW-fed antenna; cross-shaped elements; defective ground plane; radiation patterns; resonant frequency; return loss bandwidth; wideband CPW-fed patch antenna; wideband antenna; Antenna measurements; Bandwidth; Broadband antennas; Costs; Feeds; Impedance matching; Microstrip antennas; Patch antennas; Resonant frequency; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330154

Filename

1330154