Microwave filter comprising a coaxial structure with a metallized foam having a periodic profile
US7355495B2 · kind B2 · utility
2Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2003 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Apr 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/202
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a microwave filter comprising a coaxial structure, consisting of a tubular outer conductor and an inner bar conductor. According to the invention, the inner bar conductor extends in an axial direction inside the outer tube and, together with said tube, forms a series of concentric slots in the axial direction thereby defining successive coaxial line segments with low characteristic impedance and coaxial line segments with high characteristic impedance. The aforementioned concentric slots are produced in a synthetic foam block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.