Transmitting a signal using duty cycle modulation

Details Transmitting a signal using duty cycle modulation Transmitting a signal using duty cycle modulation

1997-12-01

2000-08-29

Chan, Jason

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359195, 359181, 359189, H04B 1000, H04B 1004, H04B 1006

Patent

active

061116807

ABSTRACT:
A transmitter is provided for transmitting an analog signal. The transmitter has an input receiving the analog signal within a range of values. The transmitter also includes a duty cycle modulator generating a modulated two state signal having a maximum frequency at an intermediate value of the range. The duty cycle of the modulated signal is monotonically related to the analog signal while the frequency of the signal decreases with increase and decrease of the value of the analog signal from the intermediate value. The transmitter further includes an output for transmitting the modulated signal on a communication channel. A receiver is also provided that includes an input receiving the modulated two state signal from the transmitter, and a circuit for translating the received signals to an output analog signal.

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Roza, E., "Analog-to-Digital Conversion via Duty-Cycle Modulation, " Nov. 1997, IEEE Transactions On Circuits and Systems-II Analog and Digital Signal Processing, vol. 44, No. 11, pp 907-914.

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