Title :
A wideband stacked plate antenna with a U-shaped ground plane for UHF CMMB repeater
Author :
Wang, Zhongbao ; Fang, Shaojun ; Fu, Shiqiang ; Li, Xiaoming
Author_Institution :
Sch. of Inf. Sci. & Technol., Dalian Maritime Univ., Dalian, China
fDate :
Nov. 29 2010-Dec. 2 2010
Abstract :
A wideband stacked plate antenna with a U-shaped strip and a U-shaped ground plane is proposed for UHF CMMB repeater applications. By employing a U-shaped strip feed technique and the dual-layer plate configuration, the impedance bandwidth of the plate antenna for VSWR<;1.2 (or 1.5) is broadened to 13.8% (or 21.6%), when the air substrate thickness is about 0.12λ0. In addition, the antenna has a back-lobe radiation level of less than -23dB across the operating bandwidth, which attributes to the use of the U-shaped ground plane. The antenna has a cross polarization level of less than -30dB and a gain of 7.3dBi. The structure of the proposed antenna is simple and low-cost.
Keywords :
UHF antennas; broadband antennas; mobile antennas; mobile television; radio repeaters; China Mobile Multimedia Broadcasting; U-shaped ground plane; U-shaped strip feed; UHF CMMB repeater; back-lobe radiation level; dual-layer plate configuration; impedance bandwidth; wideband stacked plate antenna;
Conference_Titel :
Antennas Propagation and EM Theory (ISAPE), 2010 9th International Symposium on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-6906-2
DOI :
10.1109/ISAPE.2010.5696398
