Grounding of TFR ladder filters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 27, 2001
Grant Date -
N/A
app pub date -
Feb 4, 2000
filing date -
Feb 4, 2000
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A TFR ladder filter which may yield less degradation in the stopband near the passband edges than conventionally grounded TFR ladder filters. Each of the plurality of shunt-coupled TFR elements of the ladder filter has its own dedicated ground path which is to connected to a final ground external from the ladder filter, so that each shunt-coupled TFR element is individually isolated from one another. Particularly, each shunt-coupled TFR element has a corresponding wirebond to individually connect its top metal ground electrode to a final external ground of a carrier or package on which the die encompassing the TFR ladder filter rests.
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