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The Impact of Very High S/N Spectroscopy on Stellar Physics
Proceedings of the 132nd Symposium of the International Astronomical Union, held in Paris, France, June 29-July 3, 1987
Proceedings of the London Mathematical Society
"Papers presented to J. E. Littlewood on his 80th birthday" issued as 3d ser., v. 14 A, 1965.
Output Mean and Deviation Versus Input S/N for Linear, Quadratic, and Quantizing Envelope Detectors with Saturation
The output voltage of the three detectors considered here depends at any instant on the envelope of the RF input voltage at the same instant in the following manner: 1. proportional to envelope below saturation input--constant for all higher inputs; 2. proportional to square of envelope below saturation input--constant for all higher inputs; and 3. zero when envelope is below a quantizing threshold--a positive constant for all higher inputs. The RF input voltage is the sum of the desired signal voltage, a RF sinusoid (which may be pulsed) of power S, and a RF interference voltage of power N. The DC component and the rms value of the AC component of the output voltage are charted as functions of the RF signal-to-noise ratio S/N for four types of RF interference and for the cases where the saturation (or quantized level) of the output is 2, 3, 4, 5 and 10 times the DC component of the output due to the interference alone.
German and English
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