Negative resistance network

Details Negative resistance network Negative resistance network

1975-08-01

1977-05-24

Mullins, James B.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

331172, 330 53, 330 61A, H03F 310

Patent

active

040258726

ABSTRACT:
A network characterized at a reference terminal pair by a negative resistance at a frequency near nf.sub.o, where n is an integer greater than one. The network comprises a circuit element characterized by a negative resistance at frequencies in the range f.sub.1 to f.sub.2 where f.sub.1 < f.sub.o < f.sub.2, a passive non-linear network and a filter network for coupling the negative resistance element to the passive non-linear network only at frequencies near f.sub.o and to the reference terminal pair only at frequencies near nf.sub.o. The negative resistance network may be configured with suitable components as a negative resistance amplifier and as an injection locked oscillator.

REFERENCES:
patent: 3341714 (1967-09-01), Kach
patent: 3576499 (1971-04-01), Axford et al.
patent: 3588727 (1971-06-01), Seidel
patent: 3646581 (1972-02-01), Grace
Hines, "FM Noise Suppression of an Injection Phase-Locked Oscillator," IEEE Transactions on Microwave Theory and Techniques, vol. MTT-16, No. 9, Sept. 1968, pp. 738-742.

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