Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent
1980-03-17
1982-03-09
Grimm, Siegfried H.
Demodulators
Amplitude modulation demodulator
Having specific distortion, noise or other interference...
329206, 455337, H03D 110
Patent
active
043191967
ABSTRACT:
An amplitude modulation detection apparatus that includes an envelope detector portion having a pair of diode rectifiers electrically connected at their cathodes which common cathode connection is connected through a series resistor to the input of a low-pass video filter having parallel-connected termination resistors at its output and input of a selected value. A forward biasing circuit that includes a DC voltage source coupled to a low input off-set operational amplifier having its output applied to the pair of diode rectifiers. A third diode rectifier is connected to the input of the operational amplifier at one side and to ground through a series-connected resistor. The series-connected resistor has a value that is determined in accordance with the values of the resistor connected to the commonly connected cathodes and the termination resistors in order to subject the three diode rectifiers to identical operating conditions to obtain optimum temperature compensation.
REFERENCES:
patent: 3921086 (1975-11-01), Marek
patent: 4000472 (1976-12-01), Eastland et al.
Eguizabal, "Biasing the diode improves a-m detector performance", Electronics, Aug. 4, 1977, p. 97.
Grimm Siegfried H.
Patterson H. W.
Westinghouse Electric Corp.
LandOfFree
Temperature compensated wide dynamic range linear envelope detec does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature compensated wide dynamic range linear envelope detec, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature compensated wide dynamic range linear envelope detec will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1842900