Radio frequency (RF) filter within multilayered low temperature co-fired ceramic (LTCC) substrate
US6872962B1 · kind B1 · utility
5Cited by
25References
19Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 30, 2003 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Oct 20, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/4629
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multilayered, low temperature co-fired ceramic (LTCC) substrate within which a radio frequency (RF) filter is formed. Portions of a bandpass filter are implemented using electrode patterns on different ceramic tape layers of which selected portions maintain a symmetrical physical filter structure, thereby providing self-compensation for changes in mutual coupling (e.g., mutual inductance) caused by small errors in alignment of the ceramic tape layers occurring during manufacturing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.