Dual-mode dielectric resonator bandstop filter
US5798676A · kind A · utility
2Cited by
8References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jun 3, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electromagnetic bandstop filter comprises a microwave circuit, at least one microwave resonator, coupling means that couples electromagnetic energy to and from the microwave resonator, and an impedance transformer coupled to, and in series with, the coupling means, wherein the transformer is coupled to the resonator only through the coupling means, and wherein the impedance transformer is shunt coupled to the microwave circuit. The impedance transformer comprises at least two series-connected transmission line sections of different impedances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.