Title :
Wave attenuator by high dielectric corrugate chip for the mobile telephone hand-set
Author :
Taeho Son ; Yongchang Lee ; Uslenghi, P.L.E.
Author_Institution :
Dept. of Electr. & Electron. Eng., Nisson Telecom Co. Ltd., South Korea
Abstract :
The field attenuation can be approximately obtained by the mode cutoff characteristic of the corrugate propagation. The wave attenuator, which attenuates the field towards the human brain with no effect in the other direction, was designed by the use of mode theory. The corrugate chip consists of 20 micron silver conductive electrodes and a ceramic material of relative dielectric constant 300. Measurement showed a 3.6-5 dB and a 5.6-10 dB attenuation in the 824-950 MHz and 1850-1910 MHz frequency bands respectively.
Keywords :
attenuators; biological effects of fields; cellular radio; electromagnetic fields; electromagnetic wave absorption; electromagnetic wave propagation; integrated circuits; permittivity; personal communication networks; telephone sets; 1850 to 1910 MHz; 20 mum; 3.6 to 5 dB; 5.6 to 10 dB; 824 to 950 MHz; Ag; GSM band; PCS band; UHF; ceramic material; corrugated propagation; field attenuation; frequency band; high dielectric corrugate chip; human brain; measurement; mobile telephone handset; mode cutoff characteristic; mode theory; relative dielectric constant; silver conductive electrodes; specific absorption rate; wave attenuator; Attenuation measurement; Attenuators; Ceramics; Conducting materials; Dielectric constant; Dielectric materials; Dielectric measurements; Electrodes; Humans; Silver;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874942
