Balun device, balance filter device, and wireless communication apparatus
US7256663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Mar 28, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/203
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A balun device, a balance filter device, and a wireless communication apparatus are provided. An intermediate electrode is disposed between a balanced resonance electrode and a GND electrode. More specifically, the balun device includes a pair of GND electrodes formed on a dielectric layer, an unbalanced resonance electrode formed on a dielectric layer, and a balanced resonance electrode formed on a dielectric layer. The unbalanced resonance electrode and the balanced resonance electrode are disposed between the pair of GND electrodes by laminating the corresponding dielectric layers. The intermediate electrode is interposed between the balanced resonance electrode and the GND electrode positioned close to the balanced resonance electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.