Compact radio frequency harmonic filter using integrated passive device technology
US7418251B2 · kind B2 · utility
18Cited by
12References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Aug 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0078
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency (“RF”) harmonic filter circuit as disclosed herein is fabricated using integrated passive device (“IPD”) technology. The RF harmonic filter circuit is configured to provide second, third, and fourth harmonic rejection while providing good input and output impedance matching. The RF harmonic filter circuit employs only one IPD loop inductance (preferably used for a second harmonic resonance circuit), which results in a significant die/package size reduction. The RF harmonic filter circuit also employs a combined circuit that performs input and/or output impedance matching and third harmonic rejection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.