Laminated notch filter and cellular phone using the same
US6603372B1 · kind B1 · utility
47Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2039
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.