High-speed analog multiplier--absolute value detector

Details High-speed analog multiplier--absolute value detector High-speed analog multiplier--absolute value detector

1987-12-28

1989-05-23

Mottola, Steven

Boots, shoes, and leggings

328160, G06G 7163

Patent

active

048336394

ABSTRACT:
A high-speed analog multiplier circuit for multiplying two analog inputs comprises a signum generator having an X input multiplier and having an output connected to a high-speed electronic switch. A Y analog input multiplicand is also connected to the high-speed electronic switch and the output of the electronic switch is connected to a differential amplifier of the type having a positive input, a negative input and a resultant output for producing the signum function (X) times Y. The electronic switch is operated by the signum generator so that the presence of a high Q output from the signum generator is effective to connect the Y multiplicand input to the positive input of the differential amplifier and that the presence of a high Q input from the signum generator is effective to connect the Y multiplicand input to the negative input of the differential amplifier.

REFERENCES:
patent: 3811098 (1974-05-01), Williams
patent: 4101966 (1978-07-01), Uzunoglu

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