Experimental study of magnetic and electric loop antennas for mobile units

Author

Choy, Faith ; Cherniakov, Mikhail

Author_Institution

Dept. of Comput. Sci. & Electr. Eng., Queensland Univ., Qld., Australia

Volume

2

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

344

Abstract

Magnetic and electric loop antennas were examined under a small or a large ground plane. For each ground plane setting, the loops were placed in five environments created by the presence of human body parts. They were free space, head only, hand only, head and hand, and simulated head. The results showed that the antenna was sensitive to the size of the ground plane. It also showed that the antenna patterns were severely distorted by the presence of a person except in the hand only cases. The change of the antenna pattern was far more dramatic when a real human head was placed near the antenna instead of the simulated head

Keywords

antenna radiation patterns; loop antennas; mobile antennas; 1.23 GHz; 1.6 GHz; antenna patterns; electric loop antennas; free space; ground plane size; hand only; head only; head/hand combination; human body parts; large ground plane; magnetic loop antennas; mobile units; simulated head; small ground plane; Antenna measurements; Electric variables measurement; Humans; Impedance; Magnetic heads; Magnetic resonance; Mobile antennas; Mobile communication; Phase measurement; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1999 Asia Pacific

Print_ISBN

0-7803-5761-2

Type

conf

DOI

10.1109/APMC.1999.829869

Filename

829869