Reflective signal controller

Wave transmission lines and networks – Attenuators

Patent

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Details

307262, 307264, 333 7D, 333 10, 333 81A, H01P 122

Patent

active

040165167

ABSTRACT:
Disclosed is a solid state signal controller designed to be inserted in a radio frequency transmission line or path between a source and a signal utilization device to allow the control by external means of signal amplitude ratio and polarity, with a minimum of distortion of the signal. This invention has a dynamic range of more than 100 db and is capable of greater power handling capacity than the prior art signal controllers. It employs a plurality of semiconductor diodes, commonly known as PIN diodes, each cooperating with an energy coupler and having their respective impedances controlled to effect a reflection of energy with either positive or negative polarity toward an output terminal.
In one embodiment employing a single channel, a pair of control elements are employed. In the second embodiment, four impedance elements are employed to produce a pair of quadrature signals, each independently controllable in amplitude and polarity.

REFERENCES:
patent: 3550041 (1970-12-01), Sauter
patent: 3559108 (1971-01-01), Seidel
patent: 3673492 (1972-06-01), Gilson
patent: 3931599 (1976-01-01), Salzberg

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