Patent ID: 11862863
Assignee: METAWAVE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. An antenna calibration method for a beam steering radar, comprising:
determining a first set of input voltages for a plurality of phase shifters coupled to a plurality of antenna elements in an antenna array in the beam steering radar, the voltages to control phases of signals for transmission by the antenna array;
applying the first set of input voltages to the antenna array;
measuring radiating signals resulting from the first set of input voltages;
selecting an optimization algorithm from a gradient descent algorithm, a genetic algorithm, or a particle swarm algorithm;
iteratively optimizing voltage and phase values for the plurality of phase shifters to determine voltage and phase value pairs that result in a desired gain for the antenna array; and
storing the voltage and phase value pairs in a look-up-table in the beam steering radar,, wherein iteratively optimizing voltage and phase values comprises applying the first set of input voltages to the antenna array to converge on a maximum gain for a power distribution path from a plurality of power distribution paths in the antenna array.