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NASA NTRS · 19790000320

All-digital QPSK modulator

Abstract

Circuit consisting to only four components (2 IC chips and 2 time delay devices) modulates RF signal with 2 asynchronous digital data signals. Digital modulator is virtually free of amplitude modulation, is not subject to temperature effects from other components, dissipates less power, and is far simpler than its analog predecessors.

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BibTeXRIS

Burgess, R. W., Julian, R. L.. 1980-04-01. All-digital QPSK modulator. https://ntrs.nasa.gov/citations/19790000320

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