Tunable Quasi-stripline filter and method therefor
US5798677A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49016
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Quasi-stripline filters (20) are tuned during manufacture to achieve consistent frequency response. A filter structure (20) which accommodates the method (60) is provided. The microstrip filters (30) are fabricated by forming conductive filter patterns (22) upon non-conductive (dielectric) substrates (24), and then bonding those substrates (24) to conductive (metallic) substrates (28). These filters (30) are then entunneled with conductive housings (34) electrically and physically joined to the conductive plates (28). Housings (34) of varying cross-sectional areas (40) are chosen to produce the desired frequency response, thus converting the microstrip filters (30) into quasi-stripline filters (20) with a specific frequency response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.