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.
All-digital QPSK modulator
1980-04-01
Miscellaneous
No indication
English
High Data Rate Direct X-Band QPSK Modulator
AIAA | 2004
|Direct Ka-Band QPSK Modulator for Euroskyway Multimedia Satellite
British Library Conference Proceedings | 2001
|AIAA-2004-3125 High Data Rate Direct X-Band QPSK Modulator
British Library Conference Proceedings | 2004
|