Directional coupler device
US4906954A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a multi terminal directional coupler combined by a plurality of directional couplers. Two directional coupling conductors form each of the directional couplers and are provided on both side faces of a ground conductor through dielectric substrates so as to oppose each other. Openings are defined on the ground conductor corresponding to the coupling conductors so that the coupling conductors are electrically coupled through the openings. Therefore, interference between transmission lines situated on both sides of the ground conductor can be prevented and the multi terminal directional coupler can be made small in size and weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.