Title :
A broadband planar patch antenna fed by a short probe feed
Author :
Teng, Pey-Ling ; Tang, Chia-Luan ; Wong, Kin-Lu
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
This paper presents a novel design of a broadband probe-fed planar patch antenna. The proposed antenna has a thick air-layer substrate, and bandwidth enhancement is achieved by cutting a small portion of the ground plane and adding an inverted U-shaped ground plane to be close to the radiating patch, and then feeding the antenna at the inverted U-shaped ground-plane portion using a 50-Ω coax feed with a short probe pin. Prototypes have been successfully implemented, and experimental results show that an impedance bandwidth (1:1.5 VSWR) greater than 20% can be achieved for the proposed antenna. Radiation characteristics of a prototype suitable for application in a DCS cellular system (1710-1880 MHz) base station are also presented.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; cellular radio; impedance matching; microstrip antennas; 1710 to 1880 MHz; DCS cellular system base station; bandwidth enhancement; base-station applications; broadband planar patch antenna; coax feed; inverted U-shaped ground plane; probe-fed patch antenna; radiating patch; radiation characteristics; radiation patterns; short probe feed; short probe pin; thick air-layer substrate; Antenna feeds; Bandwidth; Coaxial components; Directive antennas; Frequency; Impedance matching; Inductance; Patch antennas; Probes; Prototypes;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985359
