| 摘要 |
A circuit of low complexity which selects arbitrary channels from a plurality of multichannel input signals and generates from a plurality of individual frequency channels a plurality of output signals whose channel composition can be freely selected, consists of a plurality of bandpass filters (BP1, BP2 . . . BPn) which are tuned to the individual frequency channels and whose input and output are respectively connected to a gate of one of a plurality of circulators (Z11, Z12 . . . Z1n; Z21, Z22 . . . Z2n) connected in a chain. In this case, at least two circulator chains are present (ZK1, ZK2), and a circulator (Z11, Z12 . . . Z1n; Z21, Z22 . . . Z2n) from one of the circulator chains can be optionally switched to the input and output of each bandpass filter (BP1, BP2 . . . BPn).
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