Amplitude shift keying (ASK) demodulation circuit based on a...

Details Amplitude shift keying (ASK) demodulation circuit based on a... Amplitude shift keying (ASK) demodulation circuit based on a...

2006-08-15

2009-10-27

Tran, Khanh C (Department: 2611)

Pulse or digital communications

Receivers

Amplitude modulation

C329S347000

Reexamination Certificate

active

07609783

ABSTRACT:
An amplitude shift keying (ASK) demodulation circuit based on a self sample as a basis application in an organism implantation microsystem is a low-cost and high-performance ASK demodulation core, comprising a pulse shaper, a voltage scaler, a level contrastor, and a self-sampler for achievement of the demodulation core provided pretty digital features, and needs no passive resistor and capacitor, which may reduce the cost of design and prevent the problem with precision. Further, in the aspect of active point, the size of a transistor may be adjusted for variable control, and hence levels determined among modulation signals may be reduced to lower the complexity of voltage regulator in design.

REFERENCES:
patent: 4065722 (1977-12-01), Francis
patent: 4947407 (1990-08-01), Silvian
patent: 6198361 (2001-03-01), Arisawa
patent: 6307428 (2001-10-01), Nebel et al.

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