| 摘要 |
A channel selection switching to k links without branches and nodes between m inputs and n outputs with four-position waveguide switches with k = min. (m, n), in which several switches are arranged in a ring via their opposite terminals, every second or third switch acts as a bridge switch, the terminal lying transversely to the ring of every third switch is connected to the adjacent bridge switch via a bridge and all unoccupied switch terminals inside the ring are connected to the m inputs and the others to the n outputs or vice versa. The invention is usable with advantage in channel selection on satellites. Assuming that any 4 channels may break down, a secure replacement switching is available and hence reliability is improved. Only 2 additional bridge switches are needed, assuming that through there is one switch for each input. The maximum number of switch connections is 4. |
