Patent ID: 11867735
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 22:
23. A method of determining voltage standing wave ratios, VSWR, of an antenna array having a plurality of single-polarized subarrays, the method comprising:
forming a plurality of groups of subarrays, each group being formed so that nearest subarrays in the group are separated by at least one subarray not in the group; and
for each group:
combining reflected signals from the subarrays of a group to produce a first signal YREFL;
combining forward signals from the subarrays of the group to produce a second signal YFWD;
multiplying the first signal YREFL by a matrix X of orthogonal signals corresponding to transmission signals coupled to the subarrays of the group to produce a reflected power PREFL;
multiplying the second signal YFWD by the matrix X to produce a forward power PFWD;
calculating a VSWR for the group based on the reflected power PREFL and the forward power PFWD.