Broadband switch matrix with non-linear cascading

Details Broadband switch matrix with non-linear cascading Broadband switch matrix with non-linear cascading

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01)

Patent

CA 2011828

88-3-407 BROADBAND SWITCH MATRIX WITH NON-LINEAR CASCADING ABSTRACT A broadband switching matrix having MxN crosspoint switches is arranged into a selected number of groups of vertically cascaded stages in which adjacent groups are interconnected with expansion stages. An input signal switched from row to column in a particular group propagates through the remaining stages in that group and then propagates successively through the expansion stages in each following group before reaching an output port. In another array configuration, a set of N multiplexers arranged in parallel each receive N input signals and provide a single output signal at a respective output port. The multiplexers are constructed from 2:1 selector elements which are arranged in a vertical tree configura- tion having log2N cascaded stages. Each multiplexer has the same number of stages and hence selector elements. Both broadband switching arrays are designed so that each switch drives only one other switch in the array, thereby minimizing capacitive loading and maximizing propagation speed.

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