Telefonaktiebolaget Lm Ericsson (publ)

Harry Hang Zhu

Marthinus Willem Da Silveira

Ahmed Badawy

A method and transmitter for determining voltage standing wave ratios, VSWR, of an antenna array having multiple subarrays, each subarray having two branches. According to one aspect, a method includes grouping the branches of the 5 antenna array to form a number of groups, each group being formed so that nearest branches in group are separated by at least one branch not in the group. For each group, the method includes combining reflected signals from the branches of the group to produce a first signal YREFL and combining forward signals from the 10 branches of the group to produce a second signal YFWD; calculating a reflected power PREFL and a forward power PFWD and calculating a VSWR for the group based on the reflected power PREFL and the forward power PFWD.

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Ottawa, Canada

Harry Hang Zhu