Active hybrid transformer circuit having a replica driver
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United States of America Patent
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Mar 13, 2007
Grant Date -
Aug 18, 2005
app pub date -
Feb 13, 2004
filing date -
Feb 13, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
In an active hybrid transformer circuit connected to both transmit and receive sides, a current driver is connected to a transmission path circuit through a common connection point of a load resistor and a replica resistor while a replica driver is connected to the replica resistor of which another connection point is directly connected to the receive side. The replica driver may be formed by a DAC of a current output type. A current ratio of the replica driver and the current driver is selected at a predetermined value so as to prevent a transmit signal from leaking into the receive side.
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