Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330154
