Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-02-08
1985-12-10
Laroche, Eugene R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307529, 332 31T, 332 45, G06G 7161
Patent
active
045582831
ABSTRACT:
There is provided a sum or differential frequency signal generating circuit for two input signals of first and second frequencies. This circuit comprises: 1st and 2nd differential amplifiers which receive the input signal of the 1st frequency and generate differential 1st and 2nd output currents having the phase difference of 90.degree.; 3rd and 4th differential amplifiers which receive the input signal of the 2nd frequency and generate differential 3rd and 4th output currents having the phase difference of 90.degree.; a 1st multiplier consisting of a differential amplifier for generating the multiplication output current of the output currents of the 1st and 3rd differential amplifiers; a 2nd multiplier consisting of a differential amplifier for generating the multiplication output current of the output currents of the 2nd and 4th differential amplifiers; and an output terminal at which the output currents of the 1st and 2nd multipliers are synthesized and fetched. This signal generating circuit hardly needs adjusting circuit but can suppress unnecessary signal components and is suitable for making an IC and can be applied to an SSB modulator and other similar circuits.
REFERENCES:
patent: 3568067 (1971-05-01), Williford
patent: 4308471 (1981-12-01), Misawa
Eslinger Lewis H.
LaRoche Eugene R.
Lee James C.
Sinderbrand Alvin
Sony Corporation
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