Modulator systems

Details Modulator systems Modulator systems

1979-09-18

1982-01-12

Moore, David K.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 44, H03C 100

Patent

active

043108105

ABSTRACT:
The modulator system comprises emitter follower type first and second transistor pairs with their emitter electrodes commonly connected, and an emitter follower type third transistor pair with their emitter electrodes commonly connected. Clamped modulation signals having opposite polarities are supplied to the base electrodes of the first transistors of the first and second transistor pairs, whereas signals to be modulated and having opposite polarities are supplied to the base electrodes of the second transistors of the first and second transistor pairs. The base electrodes of the first and second transistors of the third transistor pair are connected to the commonly connected emitter electrodes of the first and second transistor pairs, thereby producing a modulated output signal from the commonly connected emitter electrodes of the third transistor pair.

REFERENCES:
patent: 3852688 (1974-12-01), Takeda
patent: 3974460 (1976-08-01), Hongu

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