Directly emitting dielectric transmission line
US4825221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Dec 7, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/19
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Means are provided for radiating electromagnetic waves from a receiving end zone of a dielectric line for transmitting electromagnetic waves without the need for a metal horn antenna or a metal waveguide, and matching problems are thereby substantially avoided. Said means are provided by shaping the end of the line to specified contours, by varying the dielectric constant of the material of the line in a gradient longitudinally near the end zone of the line, and by arranging a reflecting mirror or lens to receive the waves emitted from the line. This waveguide is useful in wireless communications, radar transmission and similar applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.