Title :
Measured variation in performance of handheld antennas for a large number of test persons
Author :
Pedersen, Gert F. ; Nielsen, Jesper Ø ; Olesen, Kim ; Kovacs, Istvan Z.
Author_Institution :
Centre for PersonKommunikation, Aalborg Univ., Denmark
Abstract :
This work investigates the variation in the mean effective gain (MEG) for a large number of test persons in order to find how much the difference in anatomy and persons who wear glasses, etc., changes the MEG (i.e., the received signal power with respect to a reference). The evaluation was carried out in a typical GSM-1800 urban micro cell with the base station located outdoor approximately 700 m from the mobile. The mobile was located in office like environments. Peak variations in the MEG among different persons of more than 10 dB were found and the difference between “no person present” and a person present is on the average 3 dB for a directive patch antenna, 6 dB for a whip antenna and 10 dB for a helical antenna
Keywords :
UHF devices; UHF measurement; antenna testing; directive antennas; helical antennas; land mobile radio; microstrip antennas; mobile antennas; 1800 MHz; GSM-1800 urban micro cell; UHF; base station; directive patch antenna; glasses; handheld antennas; helical antenna; mean effective gain; measured performance variation; office like environments; peak variations; received signal power; test persons; whip antenna; Antenna measurements; Directive antennas; Floors; Helical antennas; Patch antennas; Performance evaluation; Position measurement; Telephone sets; Testing; Wavelength measurement;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686625
