Peak power ratio generator

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Demand – excess – maximum or minimum

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Details

307358, 324 95, G01R 1916, G01R 2104

Patent

active

045463131

ABSTRACT:
A peak power ratio generator is described for measuring, in combination with a conventional power meter, the peak power level of extremely narrow pulses in the gigahertz radio frequency bands. The present invention in a preferred embodiment utilizes a tunnel diode and a back diode combination in a detector circuit as the only high speed elements. The high speed tunnel diode provides a bistable signal and serves as a memory device of the input pulses for the remaining, slower components. A hybrid digital and analog loop maintains the peak power level of a reference channel at a known amount. Thus, by measuring the average power levels of the reference signal and the source signal, the peak power level of the source signal can be determined.

REFERENCES:
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patent: 3659101 (1972-04-01), Friedman
patent: 3835837 (1974-09-01), Peek
patent: 3924078 (1975-12-01), Bussey
patent: 4038568 (1977-07-01), May et al.
patent: 4086531 (1978-04-01), Bernier
patent: 4103108 (1978-07-01), Munter
patent: 4162444 (1979-07-01), Rodgers
Information Sheet on Hewlett-Packard 8900B and 8477A Power & Noise Figure Meters.
Information Sheet on Narda Model 66A34 Peak Power Meter; Narda Microwave Corp., Plainview, N.Y.
Information Sheet on PRD 6690-A Power Meter; PRD Electronics, Inc., Westbury, N.Y.
Information Sheets on Pacific Measurements Model 1018B; Pacific Measurements, Inc., Palo Alto, Calif.; 1977.
Hudson, P. A.; "Measurement of RF . . . ", Proc. of the IEEE; vol. 55; No. 6; Jun. 1967; pp. 851-855.
NBS Technical Note 682; "Implementation of the Notch . . . "; Simpson et al.; NBS, Boulder, Colo.; Jul. 1976.
Operative Information 436A Power Meter; Hewlett-Packard Co.; Apr. 1977; pp. 1-0 to 1-3.
Second-Half 1978 Report, Primary Standard Laboratory; Sandia Laboratories; p. 3.

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