US 11,309,977 B2Granted

Calibration method and communications device

AssigneeHuawei Technologies Co., Ltd.

InventorsYi Tang, Zhiwei Zhang, Feng Li

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Abstract

Embodiments of the present application relate to the communications field and disclose a calibration method and a communications device, capable of compensating for measured amplitude and phase results. The method includes determining a position error of each of the N antenna groups, and then determining an actual position of the antenna group based on a target position of the antenna group and the position error of the antenna group. A phase compensation value and/or an amplitude compensation value of the antenna group are determined for a target probe of the second device based on the actual position of the antenna group. Based on the phase compensation value and/or the amplitude compensation value of the antenna group, compensating is performed for a phase result and/or an amplitude result that are/is obtained by the target probe of the second device by measuring a signal transmitted by the antenna group.

Claims16

Dependent claims

A calibration method, applied to an antenna array amplitude-phase calibration system, wherein the antenna array amplitude-phase calibration system comprises a first device, a second device, and a third device connected to the first device and the second device, wherein the first device comprises N antenna groups, wherein N is an integer greater than 1, wherein the second device comprises at least three probes, wherein a distance between the first device and each of the at least three probes is less than a far field boundary distance, and wherein the calibration method comprises:

determining, by the third device, a position error of each of the N antenna groups;
for each of the N antenna groups, determining, by the third device, an actual position of an antenna group based on a target position of the antenna group and the position error of the antenna group, and determining, by the third device, at least one of a phase compensation value or an amplitude compensation value of the antenna group for a target probe based on the actual position of the antenna group, wherein the target probe is any one of the at least three probes;
and
for each of the N antenna groups, at least one of the following:
compensating, by the third device based on the phase compensation value of the antenna group, for a phase result that is obtained by the target probe by measuring a signal transmitted by the antenna group, to calibrate a phase of the signal transmitted by the antenna group;
or
compensating, based on the amplitude compensation value of the antenna group, for an amplitude result that is obtained by the target probe by measuring the signal transmitted by the antenna group, to calibrate an amplitude of the signal transmitted by the antenna group.

4 more elements

A communications device, wherein the device is a third device in an antenna array amplitude-phase calibration system, the antenna array amplitude-phase calibration system comprises a first device, a second device, and the third device connected to the first device and the second device, wherein the first device comprises N antenna groups, wherein N is an integer greater than 1, wherein the second device comprises at least three probes, wherein a distance between the first device and each of the at least three probes is less than a far field boundary distance;

and wherein the third device comprises:
at least one processor, the at least one processor configured to execute instructions stored in a non-transitory medium to determine a position error of each of the N antenna groups, wherein the at least one processor is further configured to:
for each of the N antenna groups, determine an actual position of an antenna group based on a target position of the antenna group and the position error of the antenna group;
and
determine at least one of a phase compensation value or an amplitude compensation value of the antenna group for a target probe based on the actual position of the antenna group, wherein the target probe is any one of the at least three probes;
and
for each of the N antenna groups, at least one of:
compensate, by the third device based on the phase compensation value of the antenna group, for a phase result that is obtained by the target probe by measuring a signal transmitted by the antenna group, to calibrate a phase of the signal transmitted by the antenna group;
or
compensate, based on the amplitude compensation value of the antenna group, for an amplitude result that is obtained by the target probe by measuring the signal transmitted by the antenna group, to calibrate an amplitude of the signal transmitted by the antenna group.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/111,319Filed 3 Dec 2020 · continuation
Priority: CN 201811028333.X4 Sep 2018
Published: US 2021/0091863 A125 Mar 2021
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

H04B 17/12
For calibration: of transmit antennas, e.g. of the amplitude or phase
H04B 17/221
For calibration of the receiver components: of receiver antennas, e.g. as to amplitude or phase
H04B
Transmission

Family

PCT/CN2019/104458Parent of this continuation · filed 4 Sep 2019
US 2021/0091863 A1Pre-grant publication · published 25 Mar 2021
US 11,309,977 B2This patent

From the US filing history. Foreign family members aren’t listed.

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