Open AccessProximity‐effect test for lossy wireless‐device measurements in reverberation chambers
Author(s) -
Aan Den Toorn Joop,
Remley Kate A.,
Holloway Christopher L.,
Ladbury John M.,
Wang ChihMing
Publication year - 2015
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2014.0282
Subject(s) - lossy compression , anechoic chamber , electromagnetic reverberation chamber , antenna (radio) , acoustics , wireless , computer science , electronic engineering , wireless power transfer , electrical engineering , reverberation , engineering , telecommunications , physics , artificial intelligence
The authors present a test method for quantifying and reducing systematic errors arising from antenna proximity to lossy objects in over‐the‐air performance testing of lossy large‐form‐factor wireless devices. The method determines the extent to which antenna proximity to lossy, large‐form‐factor objects influences the measured reference power transfer function. The test may be used to pre‐characterise a given chamber set‐up in terms of a minimum distance between antennas and lossy objects. They illustrate the use of the method in a total radiated power measurement of a large, commercially available, machine‐to‐machine device, where agreement to anechoic‐chamber measurements is demonstrated to within the measurement uncertainty.