Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility (APEMC), 2010 Asia-Pacific Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5621-5
DOI :
10.1109/APEMC.2010.5475876
