Directional coupler, high frequency circuit module and wireless communication system
US6972640B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Sep 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/19105
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A directional coupler for detecting an output of a high frequency circuit module includes a main line and a sub-line overlapped with the main line with a dielectric material. The sub-line is set, in width, narrower than the main line and both side edges of the sub-line are allocated at the internal side of both side edges of the main line. Accordingly, the sub-line is surely provided opposed to the main line in the total width area and a signal current flowing into the main line can be detected in higher accuracy. Therefore, a wireless communication system for controlling an output of the high frequency circuit module by including such directional coupler assures stable communication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.