Receiver of amplitude modulated signals

Details Receiver of amplitude modulated signals Receiver of amplitude modulated signals

1987-01-28

1988-03-15

Kamm, William E.

Surgery

Truss

Perineal

128903, 455337, A61B 1900

Patent

active

047306033

ABSTRACT:
An improvement to an implantable amplitude modulated frequency receiver wherein a resistor in the demodulator portion of a prior art receiver, which provides a discharge path for a capacitor, is replaced with an active circuit portion that includes a semiconductor device that provides the discharge path wherein the conductivity level of the semiconductor device is inversely related to the level of conduction of a rectifier to which the received amplitude modulated signal is applied. The active circuit portion improves the efficiency of the receiver in that less power is lost than in the case of the resistor the active circuit portion replaces.

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patent: 3694756 (1972-09-01), Carlson
patent: 3796221 (1974-03-01), Hagfors
patent: 3999138 (1976-12-01), Peil et al.
patent: 4403156 (1983-09-01), Sakamoto

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