Mobile handset performance evaluation using radiation pattern measurements

• Published in: IEEE transactions on antennas and propagation Vol. 54; no. 7; pp. 2154 - 2165
• Main Authors: Nielsen, J. O., Pedersen, G.F.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.2006; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antennas; Applied sciences; Equipments and installations; Exact sciences and technology; Extraterrestrial measurements; Frequency dependence; Gain; Gain measurement; Human; Humans; Imaging phantoms; Mathematical models; mean effective gain (MEG); mobile handset performance; Mobile handsets; Mobile radiocommunication systems; Orientation; Performance evaluation; Performance gain; Polarization; Power measurement; Radiocommunications; sampling density; Shoulders; spherical radiation pattern; Studies; Telecommunications; Telecommunications and information theory; Telephone sets; Time measurement; total isotropic sensitivity (TIS); total radiated power (TRP); Performance evaluation; Mobile radiocommunication; Frequency dependence; mobile handset performance; Wireless telecommunication; spherical radiation pattern; total isotropic sensitivity (TIS); Total radiation; mean effective gain (MEG); Portable equipment; Radiation pattern; Measurement method; sampling density; total radiated power (TRP); Gain
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2006.877156

The mean effective gain is an attractive performance measure of mobile handsets, since it incorporates both directional and polarization properties of the handset and environment. In this work the mean effective gain is computed from measured spherical radiation patterns of five different mobile handsets, both in free space and including a human head & shoulder phantom. Different models of the environment allow a comparison of the mean effective gain obtained for realistic models based on measurements with the total radiated power and the total isotropic sensitivity. All the comparisons are based on the mean effective gain values obtained for different orientations of the handsets in the environments. For practical measurements it is important to minimize the measurement time. The paper includes a study of the variation in mean effective gain when the number of samples in the spherical radiation pattern is reduced. Furthermore, the frequency dependence of the mean effective gain is investigated, and a method is proposed for reducing the required number of measurements on different frequencies.