Amplitude-only and complex field measurements for characterizing radiated fields of mobile terminal antennas from a small number of samples

The capabilities of the Fourier transform and the spherical wave expansion-based techniques to determine the total radiated power and the radiation pattern of mobile phones from a relatively small number of amplitude-only and complex field values are compared. Several different simulation models of...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2005-10, Vol.54 (5), p.1989-1996
Main Authors: Laitinen, T.A., Vainikainen, P., Koskinen, T., Kivekas, O.
Format: Article
Language:English
Subjects:
Antenna measurement
Antenna measurements
Antenna radiation patterns
Antennas
Cell phones
Computer simulation
Fourier transforms
Frequency
Frequency ranges
Guidelines
Imaging phantoms
Instrumentation
Measurement uncertainty
Mobile antennas
Mobile handsets
mobile phone
phantom head
radiation pattern
spherical wave expansion
Terminals
Testing
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Summary:The capabilities of the Fourier transform and the spherical wave expansion-based techniques to determine the total radiated power and the radiation pattern of mobile phones from a relatively small number of amplitude-only and complex field values are compared. Several different simulation models of mobile phones beside a head phantom model in the frequency range 0.9-2.1 GHz are used as test cases. The results provide general guidelines for choosing a reasonable number of measurement directions for characterizing radiated fields of mobile phones. The results show that for a fixed, relatively small number of measurement directions, the complex field measurements provide lower uncertainty of the determination of the radiation pattern compared to the amplitude-only measurements.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2005.853565