Low noise amplifier and method for energy biased radiation sensi

Details Low noise amplifier and method for energy biased radiation sensi Low noise amplifier and method for energy biased radiation sensi

1981-10-19

1984-08-21

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250214A, 250345, G01N 2127

Patent

active

044672039

ABSTRACT:
An amplifier, responsive to a photosensitive element operating in a high intensity ambient level, and a method for selecting circuit parameters of the amplifier, take into account differing dynamic mechanisms to provide an optimum tradeoff between signal and noise. The dynamic mechanisms, manifested as electrical noise, affect and are particularly noticeable in the output of the photosensitive element operating in a high energy level environment. The method provides steps for selecting an optimum circuit element for enabling a receiving apparatus to achieve a superior signal to noise figure and hence superior sensitivity to a small AC signal level "riding" on a high DC ambient signal.

REFERENCES:
patent: 3194968 (1965-07-01), Masin
patent: 4218613 (1980-08-01), Bletz

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