| 摘要 |
PROBLEM TO BE SOLVED: To apply weight to signals to be separated of a plurality of antenna elements at the same time by using only a limited number of signal lines between the adjacent antenna elements and to transmit each of the separated signals to an indoor unit. SOLUTION: Signals extracted from a plurality of antenna elements 1-i are sampled (4-1) synchronously with each other, delayed (5-1) with times sequentially set longer by each unit delay time for the antenna elements adjacent to each other, and then weighted (6-1) to each of signals to be separated. Adder means 8-1 sequentially sum the weighted signals in the order of the shorter delay time. Repeating the delay operations of the weighted signals and the sum operations between the adjacent antenna elements obtains each signal to be separated.
|
