Broad band directional signal generator

Details Broad band directional signal generator Broad band directional signal generator

H - Electricity

01

P

333/8

H01P 5/18 (2006.01) H04B 3/20 (2006.01) H04L 5/14 (2006.01)

Patent

CA 1037573

BROAD BAND DIRECTIONAL SIGNAL GENERATOR Abstract of the Disclosure The broad band directional signal generator disclosed gener- ates signals on a transmission line, which controllably propagate. in one direction on the line to the exclusion of the other direc- tion, or in both directions. Such signal generation may occur at one or a multiplicity of points located at arbitrary positions a- long the line. The signal generator includes a conventional .pi., O, T, or H attenuator network and operates in conjunction with other circuitry. In the disclosed embodiments, symmetrical at- tenuators are used with either single ended or push-pull ampli- fiers connected to the attenuator nodes. The invention, however, is equally applicable to .pi., O, T, or H attenuator networks which are not symmetrical. The specific embodiments shown employing active devices and direct coupling have wide frequency responses which are flat and flat to DC. Where operation down to DC is not required, AC or transformer coupling may be used. The circuits disclosed have applications in analog and digital communication paths where two-way information flow exists and where a multiplicity of ports may share the same path. - 1 -

225975

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