Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1987-05-20
1987-12-29
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328145, 329192, G06G 724
Patent
active
047163160
ABSTRACT:
A logarithmic rf amplifier includes a plurality of cascaded stages each including a differential amplifier which performs full-wave rectification of the rf signal and a circuit for providing a video signal representative of the full-wave rectified rf signal. The logarithmic amplifier further includes a circuit for supplying rf signals of equal amplitude and opposite polarity to the inputs of the first differential amplifier stage and a circuit for summing the video signals from each of the stages and providing a logarithmic video output. The amplifier exhibits extremely fast pulse response and clean limiting.
REFERENCES:
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patent: 3417263 (1968-12-01), Thomas
patent: 3573491 (1971-04-01), Goss et al.
patent: 3605027 (1971-09-01), Nichols et al.
patent: 3662274 (1972-05-01), Pritchard et al.
patent: 3668535 (1972-06-01), Lansdowne
patent: 3678294 (1972-07-01), Glathe
patent: 3757136 (1973-09-01), Hughes
patent: 3921008 (1975-11-01), Claverie
Lamagna, "Designing Compact Log Amps", Microwaves, Apr. 1974.
Cole Stanley Z.
Davis B. P.
Dooher Terrence E.
Fisher Gerald M.
Miller Stanley D.
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