Accession Number : ADD009399

Title :   Linearized Multiplier Device for Triple Product Convolvers.

Descriptive Note : Patent,


Personal Author(s) : Kerber,George L

Report Date : 26 Jan 1982

Pagination or Media Count : 6

Abstract : The output signals of a number of variable transconductant multipliers are linearized so as to enable a triple product convolver to calculate Fourier transforms or produce beam forming of signals more accurately. Each of the multipliers includes a differential transistor pair, a current source and an emitter follower all properly interconnected together. The current source and emitter follower function as a linear voltage-to-current converter while differential transistor pair provides for linearity over a preestablished dynamic range. Such linearity is assured by a capacitor coupled between the emitter-base junction of the input transistor of the differential transistor pair. This capacitor has a magnitude equal to the sum of the stray circuit capacitance between the emitters of the differential transistor pair and ground plus the difference between the emitter-base capacitances of the differential transistor pair. (Author)

Descriptors :   *Patents, *Convolution, *Multiplication, *Signal processing, Fourier transformation, Input, Linearity, Transistors, Capacitance, Output, Dynamic range, Beam forming, Signals

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE