AN ANTENNA ARRANGEMENT WITH VARIABLE ANTENNA PATTERN

摘要

An antenna arrangement comprising an even number E>3 of antenna elements 210, 210′, connected to steerable phase shifters 211, and a number C=(E/2)*(E/2+1)/2 of hybrid couplers 212, as well as a number of E antenna arrangement ports 213 configured as an interface to the antenna arrangement. Hybrid coupler ports of a bottommost tier 218 of hybrid couplers 212 are connected to respective antenna arrangement ports 213, and hybrid couplers in an overlaying at least one tier 219 are connected to hybrid couplers in a tier immediately below. Unconnected hybrid coupler ports are connected directly to the first antenna element 210′ or to one of the other antenna elements 210.