Configurable feedback path in an amplitude control system
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United States of America Patent
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Sep 20, 2005
Grant Date -
Oct 21, 2004
app pub date -
Aug 29, 2002
filing date -
Aug 29, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A configurable feedback path is included in an amplitude control system having a signal source and an amplitude controller, and provides accurate tracking between a signal provided at a test port and a reference signal, whether or not the configurable feedback path is in an internally-leveled configuration or an externally-leveled configuration. The configurable feedback path includes a series of access ports, a detector that has an input coupled to the first access port, a filtered output coupled to the amplitude controller, and an unfiltered output providing the reference signal. The configurable feedback path also includes a signal separator that has an input terminal coupled to the signal source, a thru-terminal coupled to the third access port, and a coupled terminal that is coupled to the second access port. The fourth access port is coupled to the test port.
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