Directional coupler
US6784521B2 · kind B2 · utility
6Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jun 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/4629
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A directional coupler that has a small package size and repeatable electrical characteristics. The directional coupler includes a low temperature co-fired ceramic (LTCC) substrate with several layers. Electrical components such as resistors and capacitors are integrated within the LTCC substrate. A transformer is attached to the upper surface of the LTCC substrate and is electrically connected to the resistors and capacitors. The LTCC substrate has electrically conductive vias extending therethrough. The vias are used to make electrical connections between the layers of the LTCC substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.