Patent ID: 9735899
Date: 2017-08-15
CPC Classifications: H04B

Claim:
1. A method for calibrating an antenna array using probe antennas, said antenna array comprising a plurality of antennas and said probe antennas comprising a plurality of probe antennas, the method comprising: (a) representing the response of an antenna of said antenna array or said probe antennas by network parameters of a 2-port device wherein one port of said 2-port device is a physical antenna port, and the other port is a spatial antenna port; (b) representing the response from one antenna attached to another antenna for an antenna pair as a concatenation of the response from the physical port to the spatial port of a first antenna and the response from the spatial port to the physical port of a second antenna; (c) attaching successively a first antenna of the plurality of probe antennas to a second antenna of said plurality of probe antennas for a plurality of pairs of said plurality of probe antennas; (d) measuring for each probe antenna pair of said plurality of pairs, the S-parameters between the physical ports of said plurality of probe antennas; (e) extracting from said measurements the network parameters of the plurality of probe antennas; (f) attaching successively the plurality of antennas of the antenna array to at least one antenna of said plurality of probe antennas for a plurality of antenna pairs; (g) measuring for each said plurality of antenna pairs the S-parameters between the physical ports of said pairs of antennas; and (h) extracting the network parameters of each antenna in the antenna array using said S-parameters measurements and the extracted network parameters of said plurality of probe antennas.