Broadband signal switching matrix network

Details Broadband signal switching matrix network Broadband signal switching matrix network

1989-08-08

1991-03-05

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082587, 307530, H04Q 900

Patent

active

049981013

ABSTRACT:
In a broadband signal switching matrix network having a cross-point matrix in FET technology whose switching elements, each controlled by a holding memory cell, are each formed with a series circuit of a switching transistor and of an input transistor, this series circuit (for a switching element situated in the through-connect state) forms a cross-point-associated, one branch of a differential amplifier whose other branch shared by the cross-points connecting to one and the same matrix output line is formed by an identical or similar transistor series circuit of an output amplifier circuit that is individually associated to the matrix output line. Thus, the matrix output line is connected to one terminal of an operating voltage source via a source transistor.

REFERENCES:
patent: 3887881 (1975-06-01), Hoffmann
patent: 3980831 (1976-09-01), Mertel
patent: 4074150 (1978-02-01), Buckley, III et al.
patent: 4074206 (1978-02-01), Horninger
patent: 4204277 (1980-05-01), Kinoshita
patent: 4612514 (1986-09-01), Shigaki et al.
patent: 4788460 (1988-11-01), Kobatake
patent: 4801936 (1989-01-01), Hofmann
patent: 4820999 (1989-04-01), Csanky

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