Multi-layer band-pass filter
US7126444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2004 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Oct 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-layer band-pass filter comprises an unbalanced input, two balanced outputs, and a band-pass filter section provided between the unbalanced input and the two balanced outputs. The band-pass filter section incorporates a plurality of resonators each of which is made up of a TEM line. The band-pass filter further comprises a multi-layer substrate used for integrating the resonators. The band-pass filter section incorporates, as the resonators, an input resonator, and a half-wave resonator for balanced output that is made up of a half-wave resonator having open-circuited ends. The unbalanced input is connected to the input resonator through a capacitor. Each of the balanced outputs is connected to the half-wave resonator through a capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.