High signal to noise ratio amplitude detector

Details High signal to noise ratio amplitude detector High signal to noise ratio amplitude detector

1988-10-26

1989-08-01

Mis, David

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

H03D 110

Patent

active

048536431

ABSTRACT:
A low noise floor amplitude detector circuit utilizes a pair of semiconductor diodes connected between a radio frequency signal source and a terminating device that biases the diode at a conduction angle selected for maximum signal to noise ratio in the detector circuit. Optimum bias conditions and a low signal to noise ratio is achieved by using a conduction angle at each diode of 1.656 radians (approximately 67 degrees). This also results in matching of the radio frequency load impedance of the amplitude detector to the radio frequency impedance of a signal source.

REFERENCES:
patent: 4229735 (1980-10-01), Houck

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