Study on the elimination of surface wave by metal fences

Author

Zhang, R. ; Fang, D.G. ; Wu, K.L. ; Sheng, VJ X.

Author_Institution

Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., China

fYear

2000

fDate

2000

Firstpage

174

Lastpage

178

Abstract

The microstrip antenna is a low-profile planar structure and is inexpensive compared with other types of antennas due to the ease of manufacture. However, patch-antenna designs have some limitations such as restricted bandwidth, low gain, and a decrease in radiation efficiency due to surface wave modes. Surface wave modes in microstrip substrates may cause the undesired energy losses and the reduction of the radiation efficiency of the patch antenna. A scheme to eliminate such modes by using metal fences is proposed. This structure can be easily realized by a metalated hole in manufacturing. It is observed that the patch antenna with this structure shows reduced levels of surface wave modes, thus improving the gain and the radiation pattern

Keywords

antenna radiation patterns; antenna theory; electromagnetic wave propagation; microstrip antennas; substrates; bandwidth; energy losses; gain; low-profile planar structure; metal fences; metalated hole; microstrip substrates; patch antenna; patch-antenna designs; radiation efficiency; radiation pattern; surface wave elimination; surface wave modes; Antennas and propagation; Bandwidth; Circuits; Dielectric substrates; Frequency; Manufacturing; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Environmental Electromagnetics, 2000. CEEM 2000. Proceedings. Asia-Pacific Conference on

Conference_Location

Shanghai

Print_ISBN

7-5635-0420-6

Type

conf

DOI

10.1109/CEEM.2000.853926

Filename

853926