Techniques of evaluating high impedance surfaces used for SAR reduction

Author

Lin, Ming-Shing ; Huang, Chuang-Hao ; Hsu, Chung-I G.

Author_Institution

Dept. of Electr. Eng., NYUST, Douliou, China

fYear

2010

fDate

12-16 April 2010

Firstpage

210

Lastpage

213

Abstract

In this study, high impedance surface (HIS) structures were used to reduce interaction between a wireless antenna and its user. Mushroom and Jerusalem Cross HIS structures were designed for the PCS band (1.8 GHz). The performance of these HIS structures were investigated by surface-wave and reflection-phase methods. A new test method was also proposed to characterize the reflection phase of an HIS by using a GTEM cell. The effects of HIS sheets on antenna performance and the SAR were studied. Results revealed that these HIS structures can reduce SAR values.

Keywords

antennas; electromagnetic shielding; radiocommunication; GTEM cell; Mushroom and Jerusalem Cross HIS structures; PCS band; SAR reduction; high impedance surface structures; reflection phase; reflection phase methods; specific absorption rates; surface-wave methods; wireless antenna; wireless communication systems; Antennas and propagation; Electromagnetic compatibility; Electromagnetic radiation; Frequency selective surfaces; Geometry; Humans; Personal communication networks; Surface impedance; Surface waves; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5621-5

Type

conf

DOI

10.1109/APEMC.2010.5475876

Filename

5475876