| 摘要 |
<p>A multiplexer for the transmission of signals on different carrier frequencies includes a Butler matrix with a set of delay elements secured to output terminals of the matrix. Each of the delay elements differs from the other delay elements in that the delays imparted to signals by each of the elements differ by an integral number of delay units. The selection of frequency values is made in accordance with the increment in delay unit so as to develop incremental values of phase shift which compensate for phase shift introduced by the phase shift taper of a Butler matrix. This permits summation of signals from plural input ports of the matrix without the generation of intermodulation products among the various signal channels. <IMAGE></p> |
