Title :
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
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;
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
DOI :
10.1109/APMC.2008.4958518
