Bandwidth enhancement for multi-band slot antenna by PBG feed

Author

Chen, B. ; Ooi, B.L. ; Leong, M.S. ; Hong, F.

Author_Institution

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

Volume

2

fYear

2004

fDate

20-25 June 2004

Firstpage

2079

Abstract

The paper presents a novel feeding technique to enhance the impedance bandwidth of multi-band slot antenna. The proposed feeding structure is based on the photonic band gap concept. By replacing the conventional CPW feedline of the multi-band slot antenna with a PBG feedline, the impedance bandwidth can be effectively enhanced for all resonance frequencies. A PBG-fed multi-band slot antenna and a reference antenna have been fabricated and measured. Comparison shows the validity of our approach, as the bandwidths increase from 7% to 10% at 1.88 GHz; from 8% to 16% at 2.45 GHz and from 8.3% to 20.8% at 3.5 GHz, respectively.

Keywords

UHF antennas; antenna feeds; broadband antennas; electric impedance; multifrequency antennas; photonic band gap; slot antennas; 1.88 GHz; 2.45 GHz; 3.5 GHz; CPW feedline; PBG feed; impedance bandwidth enhancement; multi-band antenna; multi-band slot antenna; photonic band gap; resonance frequencies; Antenna feeds; Antenna measurements; Antennas and propagation; Bandwidth; Coplanar waveguides; Impedance; Lattices; Microstrip antennas; Periodic structures; Slot antennas;

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.2004.1330618

Filename

1330618