Title :
Statistics of measured body loss for mobile phones
Author :
Nielsen, Jesper Ø ; Pedersen, Gert F. ; Olesen, Kim ; Kovács, István Z.
Author_Institution :
Aalborg Univ., Denmark
fDate :
9/1/2001 12:00:00 AM
Abstract :
The variation in body loss for different users of a cellular handset is investigated. Measurements involving 200 test users of mobile communications (GSM) handsets have been performed and statistics are presented for a handset with three types of antennas. Differences in the body loss of up to 10 dB have been observed between users, thus indicating that body loss measurements for handsets should include several test persons. Depending on the antenna type, 8-13 test persons are required to obtain an estimate of the mean body loss with a ±1 dB confidence interval at a 90% level
Keywords :
Gaussian distribution; UHF radio propagation; cellular radio; loss measurement; mobile antennas; statistical analysis; telephone sets; 1.89 GHz; GSM handsets; Gaussian distribution; antenna type; body loss measurements; body loss variation; cellular handset; mean body loss confidence interval; mobile communications; mobile phones; statistics; Antenna measurements; GSM; Loss measurement; Mobile communication; Mobile handsets; Performance evaluation; Statistical analysis; Statistics; Telephone sets; Testing;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
