High speed serrodyne digital frequency translator
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United States of America Patent
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Sep 6, 1994
Issued Date -
N/A
app pub date -
Jun 16, 1988
filing date -
Nov 12, 1985
priority date (Note) -
Expired
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Abstract
A high-speed serrodyne digital frequency translator utilizes a digital phase-shifter, for example, of series coupled Schiffman type cells, which have reference and delay paths which are switched by three-terminal devices of the gallium arsenide FET type. No bias voltages are used and the FETS are driven by the output of a binary divider network which in turn is composed of GaAs FETS as active elements. Thus switching in the picosecond range results.
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