| 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. |
| 主权项 |
1. An antenna arrangement comprising
a group of E number of antenna elements, the group of comprising a first, second, third and fourth antenna element, each of the second, third and fourth antenna elements being connected to a respective steerable phase shifter such that the second antenna element is connected to a first steerable phase shifter, the third antenna element is connected to a second steerable phase shifter, and the fourth antenna element is connected to a fourth steerable phase shifter, but the first antenna element is not connected to a steerable phase shifter, a number C=(E/2)*(E/2+1)/2 of hybrid couplers stacked in E/2 tiers of a pyramid distribution network, wherein a bottommost tier comprises E/2 hybrid couplers and each of at least one overlaying tier comprises one less hybrid coupler than a tier immediately below, each of the hybrid couplers being configured with first, second, third-, and fourth ports configured to have a single connection, and a number of E antenna arrangement ports configured as an interface to the antenna arrangement, wherein the first and second hybrid coupler ports of the bottommost tier of hybrid coupler are connected to a respective antenna arrangement port, and each of the first and second ports of hybrid couplers in the overlaying at least one tier being connected to respective third or fourth ports of hybrid couplers in the tier immediately below, such that each hybrid coupler in the overlaying at least one tier is connected to two different hybrid couplers in the tier immediately below, wherein remaining unconnected third or fourth hybrid coupler ports being connected directly to the first antenna element or to one of the other antenna elements via the corresponding phase shifter such that each antenna element is connected directly or indirectly via a phase shifter to a single hybrid coupler port. |
