| 摘要 |
An N-port multiplexer for separating a single input signal into N distinct isolated frequency components on discrete output terminals. The device is adapted to accomplish this function in a reciprocal, passive, lossless manner, in respect to an arbitrarily large number of such components. The multiplexer basically comprises two known microwave circuit devices uniquely combined. One of these is a frequency sensitive delay line with a plurality of taps and the other is a beam-forming matrix, such as a Butler matrix, or the so-called equal-path-length cross-line matrix. In a receiving mode, the delay line input is the signal to be separated and the taps are fed to the radiating element terminals of the beam-forming matrix. The matrix output terminals then provide the discrete frequency output lines.
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