Laminated notch filter and cellular phone using the same
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United States of America Patent
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-
Aug 5, 2003
Grant Date -
N/A
app pub date -
Nov 28, 2000
filing date -
Nov 29, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A notch filter made up from laminated dielectric, which attenuates a specific frequency of a signal to be transmitted, comprises two terminals for input or output a signal to be transmitted, a line connected between those terminals, two resonators each having one end connected to ground and an other end, two first coupling capacitors, and a second coupling capacitor. Each end of the line is connected to the other end of the resonator through the first capacitor. The second capacitor couples said two resonators each other.
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