| 摘要 |
<p>PURPOSE:To eliminate plural spurious waves and to obtain only a desired wave by converting a reception signal into signals orthogonal to each other by a lattice network and using the converted signals so as to calculate a load value. CONSTITUTION:Suppose that a desired wave and a spurious wave come to the antenna at different frequencies, then reception signals x1(n)-xN(n) via N-set of antenna elements 7 and a receiver 6 are inputted to a lattice network 5, in which the signals are orthogonal-converted. An output of the network is inputted to a complex number multiplier 1, a load calculation means 4, and a load number decision means 8. The means 4 receives an output signal of the network 5 and a reference signal generated by a reference signal generator 3 to obtain a load. Moreover, the means 8 receives an output signal of the network 5 to decide the load value. A load value control means 9 receives outputs of the means 8, 4 to select the load value. The multiplier 1 multiplies the load value obtained from the means 4 with the output of the network 5. Outputs of the multipliers 1 are added by a complex number adder 2, in which total sum is obtained.</p> |
