公开(公告)号：US20170117950A1

公开(公告)日：2017-04-27

申请号：US15074767

申请日：2016-03-18

Applicant: Cambium Networks Limited

Inventor： Peter Strong

IPC: H04B7/06 ,  H04B7/04 ,  H04L27/26

CPC classification number: H04B7/0682 ,  H04B7/0452 ,  H04B7/0617 ,  H04B17/102 ,  H04B17/11 ,  H04L27/26

Abstract: An access point of a wireless communication network forms beams by applying a weightset for a beamforming weights matrix to signal streams. The Equivalent Isotropic Radiated Power (EIRP) that is emitted from an array of antenna elements at the access point is controlled by calibrating the transmission phase and gain of a respective transmit chain for each antenna element, providing a polar radiation model for an antenna element of the array, and determining a weightset for the weighting matrix subject to a constraint that a maximum total EIRP for the beams in combination in any azimuth direction is maintained within a predetermined EIRP limit, based at least on a spatial separation of the antenna elements, the polar radiation model and the calibrated transmission phase and gain of each respective transmit chain.