Band-notched inverted-cone monopole antenna for compact UWB systems

Author

Gayathri, R. ; Jisney, T.U. ; Krishna, Deepti Das ; Gopikrishna, M. ; Aanandan, C.K.

Author_Institution

Dept. of Electron., Cochin Univ. of Sci. & Technol., Cochin

Volume

44

Issue

20

fYear

2008

Firstpage

1170

Lastpage

1171

Abstract

A microstrip-fed planar ultra-wideband monopole antenna with band-notch characteristics is proposed. The antenna size is compact (18 30 mm) and operates over an extremely wide band of 3 16 GHz. The proposed design consists of an inverted cone as the radiating patch and a tapered ground plane. Wideband matching is obtained by properly shaping the ground. A pair of symmetrically placed quarter wave slot resonators is embedded in the ground plane for rejecting the 5 6 GHz WLAN band. Results indicate a stable and omnidirectional radiation pattern with an average gain of 3 dBi and a sharp reduction in gain at notched frequencies. Moreover, measured group delay and transmission characteristics show excellent transient response.

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; monopole antennas; resonators; ultra wideband antennas; WLAN band; band-notched antenna; compact UWB systems; frequency 3 GHz to 16 GHz; inverted-cone antenna; microstrip-fed planar ultra-wideband antenna; monopole antenna; omnidirectional radiation pattern; quarter wave slot resonators; wideband matching;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20081770

Filename

4634995