DUPLEXER WITH SHIELDING BONDWIRES BETWEEN FILTERS
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United States of America Patent
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N/A
Issued Date -
Feb 21, 2013
app pub date -
Aug 15, 2011
filing date -
Aug 15, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A duplexer includes first and second filters, and a first shielding bondwire. The first filter includes a first bondwire connecting the first filter to a printed circuit board, the first bondwire forming a portion of a first virtual loop having a first virtual area, where first current passing through the first bondwire generates a first magnetic field. The second filter includes a second bondwire connecting the second filter to the printed circuit, the second bondwire forming a portion of a second virtual loop having a second virtual area. The first shielding bondwire includes first and second ends connected to a conductor of the printed circuit board to form a closed electrical first shielding loop having a corresponding first shielding area. The magnetic field induces shielding current in the first shielding loop, which generates a first compensating magnetic field that attenuates the first magnetic field.
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