Method of measuring AAS EMF

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United States of America Patent

PATENT NO 12058534
APP PUB NO 20220264319A1
SERIAL NO

17624691

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Abstract

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Embodiments of a method for measurement of electromagnetic field strength at a point of interest in a coverage area of a 2-dimensional (2D) active antenna system (AAS). The 2D AAS transmits with a load factor of 100 percent. The 2D AAS sweeps a predefined range of azimuth and elevation angles, and azimuth and elevation directions which yield highest EMF at the point of interest are determined. First beamforming weights are determined based on the azimuth and elevation directions and the 2D AAS caused to apply the first beamforming weights. The 2D AAS sweeps a co-phasing angle from 0 to 360 degrees, and a co-phasing angle which yields highest EMF is determined. Second beamforming weights are determined based on azimuth and elevation directions and the co-phasing angle, and the 2D AAS caused to apply the second beamforming weights. The EMF strength at the point of interest is measured.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)SE-164 83 STOCKHOLM

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Weihong Kanata, CA 34 108
Lu, Guoqiang Ottawa, CA 30 278
Mah, Edward Kanata, CA 16 218
Smith, Daryl Gloucester, CA 8 40
Thomas, Dimple Ottawa, CA 2 2
Xue, Guoqiang Kanata, CA 29 51

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