Narrow-band, bandstop filter
US5065119A · kind A · utility
25Cited by
4References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/209
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-resonant notch filter incorporates a stepped impedance transmission line with impedance values going from a relatively low value and increasing upward to a relatively high value then back down to a relatively low value again. A plurality of resonant cavitites is coupled to the relatively high central impedance line section of the filter. Other resonators can be coupled to lower impedance sections of the transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.