Single diode upper sideband terminated parametric amplifier

Details Single diode upper sideband terminated parametric amplifier Single diode upper sideband terminated parametric amplifier

1978-04-28

1979-07-03

Mullins, James B.

Amplifiers

Parametric amplifiers

Semiconductor type

307424, 330 45, H03F 704

Patent

active

041602153

ABSTRACT:
A single varactor diode parametric amplifier is described which has a broadband termination at the upper sideband frequency in the pump waveguide. This termination presents an open circuit condition at the upper sideband frequency, which, in combination with an upper sideband fequency choke on the input signal circuit transmission line achieves low noise, high gain characteristics with minimum interaction with the input signal, pump, and idler circuitry. Theoretical noise figures can be obtained at low power consumption, high gain, and broadband performance.

REFERENCES:
patent: 3517209 (1970-06-01), Abel
patent: 3518562 (1970-06-01), Lombardo et al.
patent: 3609571 (1971-09-01), Klein et al.
patent: 3805176 (1974-04-01), Kudo et al.
patent: 3992675 (1976-11-01), Niehenke et al.

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