US 12,763,462 B2 · Calibration method and system for phased array antenna

Abstract

The present disclosure provides a calibration method. The calibration method includes operations of: dividing a phased array antenna to N groups, wherein each groups includes M antennas; disposing a probe above a center of an Xth group of the N groups; obtaining a first estimated amplitude and a first estimated phase of a radio wave radiated by a Yth antenna of the M antennas of the Xth group according to a first and a second configurations; obtaining a second estimated amplitude and a second estimated phase of the radio wave radiated by the Yth antenna of the M antennas of the Xth group according to the first and second configurations; and calibrating the Yth antenna according to the first estimated amplitude, the second estimated amplitude, the first estimated phase, and the second estimated phase.

Claims18

Dependent claims

A calibration method, comprising:

dividing a phased array antenna to N groups, wherein each of the N groups comprises M antennas, wherein N is a positive integer greater than 1, and M is a positive integer greater than 1;
obtaining a first estimated amplitude and a first estimated phase of a radio wave radiated by a Yth antenna of the M antennas of an Xth group of the N groups according to a first configuration and a second configuration different from the first configuration, wherein X is an integer, Y is an integer, 1≤X≤N, and 1≤Y≤M;
obtaining a second estimated amplitude and a second estimated phase of the radio wave radiated by the Yth antenna of the M antennas of the Xth group according to the first configuration and the second configuration;
and
calibrating the Yth antenna according to the first estimated amplitude, the second estimated amplitude, the first estimated phase, and the second estimated phase.

2 more elements

A calibration system, configured to calibrate a phased array antenna, wherein the phased array antenna comprises a plurality of antennas, wherein the plurality of antennas are divided to N groups, and each of the N groups comprises M antennas, comprising:

a probe;
a motion controller, configured to hold the probe via a mechanical arm and control a motion of the probe;
and
a processor, configured to:
control the motion controller to dispose the probe above a center of an Xth group of the N groups;
set the Xth group to have a first configuration;
control the Xth group to radiate a vertically polarized radio wave according to the first configuration;
control the probe to measure a first power and a first phase of the vertically polarized radio wave;
set the Xth group to have a second configuration;
control the Xth group to radiate the vertically polarized radio wave according to the second configuration;
control the probe to measure a second power and a second phase of the vertically polarized radio wave;
obtain a first estimated amplitude and a first estimated phase of a Yth antenna of the M antennas of the Xth group according to the first power, the second power, the first phase, and the second phase;
and
calibrate the Yth antenna according to first estimated amplitude and the first estimated phase.

11 more elements

Dependencies are inferred from the claim text.

Calibration method and system for phased array antenna

Life of this patent

Calibration method and system for phased array antenna

Life of this patent

Abstract

Claims18