Boots – shoes – and leggings
Patent
1980-04-03
1982-01-26
Gruber, Felix D.
Boots, shoes, and leggings
364824, 364861, 364573, 307498, G06G 7163, G06G 719
Patent
active
043131751
ABSTRACT:
The output signals of a number of variable transconductant multipliers are inerized 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.
REFERENCES:
patent: 3433936 (1969-03-01), Blanke
patent: 3448297 (1969-06-01), Rhodes
patent: 3475689 (1969-10-01), Gilbert
patent: 3689752 (1972-09-01), Gilbert
patent: 4042815 (1977-08-01), Brown et al.
Gruber Felix D.
Johnston Ervin F.
Keough Thomas G.
Sciascia Richard S.
The United States of America as represented by the Secretary of
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