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

fYear

2010

fDate

Nov. 29 2010-Dec. 2 2010

Firstpage

71

Lastpage

74

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas Propagation and EM Theory (ISAPE), 2010 9th International Symposium on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-6906-2

Type

conf

DOI

10.1109/ISAPE.2010.5696398

Filename

5696398