Analyzer for nonlinear networks

Details Analyzer for nonlinear networks Analyzer for nonlinear networks

1979-12-07

1981-06-16

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 58A, 328163, G01R 2700, G01R 2704

Patent

active

042740479

ABSTRACT:
This application describes a method and apparatus for measuring the transmission characteristics of a class of nonlinear two-ports containing physically inseparable reactive networks, but which can be characterized by an equivalent network comprising input and output linear reactive networks separated by a resistive nonlinear network. In accordance with the method, three signals, f.sub.1, f.sub.2 and f.sub.3, are applied to the test network where signals f.sub.2 and f.sub.3 are variable and differ by a relatively small amount .DELTA.f. So related, the third order intermod frequency, f.sub.p =f.sub.1 -f.sub.2 +f.sub.3, becomes a constant f.sub.p =f.sub.1 +.DELTA.f. It is further shown that the magnitude of the output voltage V.sub.p at frequency f.sub.p is proportional to the square of the magnitude of the input network transfer function H.sub.A (f).

REFERENCES:
patent: 3522526 (1970-08-01), Sanderson
patent: 3596175 (1971-07-01), Alford
patent: 3663954 (1972-05-01), Alker
patent: 4048559 (1977-09-01), Miedema
patent: 4104583 (1978-08-01), Engen

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