Directional coupler, antenna device, and transmitting-receiving device
US6433741B1 · kind B1 · utility
225Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1999 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Jul 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/18
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A directional coupler including a first transmission line and a second transmission line adjacent to the first transmission line, the relative positions of the first transmission line and the second transmission line being changeable, an antenna element connected to a part of the directional coupler, and a driving mechanism for driving the directional coupler and the antenna element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.