US 11,774,483 B2
Over the air measurements meeting a gain flatness criterion
Peder Malmlöf, Gävle (SE); and Robert Rehammar, Romelanda (SE)
Assigned to BLUETEST AB, Gothenburg (SE); and GEFLE TESTTEKNIK AB, Gävle (SE)
Appl. No. 17/609,666
Filed by BLUETEST AB, Gothenburg (SE); and GEFLE TESTTEKNIK AB, Gävle (SE)
PCT Filed Apr. 29, 2020, PCT No. PCT/EP2020/061909
§ 371(c)(1), (2) Date Nov. 8, 2021,
PCT Pub. No. WO2020/229187, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 1930150-6 (SE), filed on May 10, 2019.
Prior Publication US 2022/0196717 A1, Jun. 23, 2022
Int. Cl. G01R 27/04 (2006.01); G01R 29/10 (2006.01); H04B 17/29 (2015.01); H04B 17/391 (2015.01); H04L 1/20 (2006.01)
CPC G01R 29/105 (2013.01) [H04B 17/29 (2015.01); H04B 17/3911 (2015.01); H04L 1/203 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for measuring performance of at least one device under test, DUT, (DUT) in a reverberation chamber over a frequency band, the method comprising, iteratively:
generating a fading scenario by the reverberation chamber;
measuring a channel gain across a frequency band on a link between the DUT and a test antenna of the reverberation chamber;
identifying, from said measured channel gain, at least one measurement sub-band comprised in the frequency band, wherein the at least one measurement sub-band complies with a gain flatness criterion, the gain flatness criterion comprising a measure of gain difference across the measurement sub-band;
measuring performance of the at least one DUT in the at least one identified measurement sub-band, thereby generating at least one performance measurement result;
accumulating the at least one performance measurement result; and
determining measurement coverage and terminating the performance measurement in case the measurement coverage meets a coverage criterion.