Low temperature co-fired ceramic (LTCC) circulator
US6844789B2 · kind B2 · utility
17Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Nov 14, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/387
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) circulator includes a low temperature co-fired ceramic (LTCC) substrate and a ferrite structure disposed in the LTCC substrate. The circulator also includes first, second and third transmission lines disposed in the LTCC substrate and coupled between the ferrite disk and first, second and third ports of the circulator. The ferrite structure embedded in the LTCC substrate is exposed to an appropriate direct current (DC) magnetic field, to provide the circulator as an integrated LTCC substrate circulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.