A small omni-directional patch antenna with ultra wide impedance bandwidth

Author

Lau Pui Yi ; Lamba, G.S. ; Gupta, Arpan ; Yung, E.K.N.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon

fYear

2008

fDate

16-20 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

This paper presents a novel omni-directional small Ultra Wide Band (UWB) patch antenna. The proposed geometry is composed of a circular patch which is inlayed with a bucket shaped patch top loaded on a monopole and shorted by 4 shorting strips to the ground is presented. The antenna is excited by a coaxial probe feed. It has a stable radiation pattern and a constant gain in the band of operation. Proposed geometry offers a very wide impedance bandwidth of 127% (for VSWR <2) from the frequency range of 2.3 GHz to 10.6 GHz. The antenna is low profile and small in size which has the resonance length of 0.25 lambdao. A novel method to excite the axial probe feed via a conical tube patch broadened the bandwidth of the structure.

Keywords

microstrip antennas; microwave antennas; ultra wideband antennas; coaxial probe feed; frequency 2.3 GHz to 10.6 GHz; omnidirectional patch antenna; ultrawide impedance bandwidth; Antenna feeds; Antenna radiation patterns; Bandwidth; Coaxial components; Frequency; Geometry; Impedance; Patch antennas; Probes; Ultra wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008. APMC 2008. Asia-Pacific

Conference_Location

Macau

Print_ISBN

978-1-4244-2641-6

Electronic_ISBN

978-1-4244-2642-3

Type

conf

DOI

10.1109/APMC.2008.4958518

Filename

4958518