Antenna device
US4827270A · kind A · utility
42Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Dec 9, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q25/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Antenna device for detecting a direction of an object lying in a low angle direction, which is constructed with a plurality of antenna elements, feeds, and so forth, and comprises a central feed for feeding RF signals to one or a plurality of central antenna elements, and a peripheral feed for feeding RF signals to a plurality of peripheral antenna elements, and that one of input terminals of the central feed and one of input terminals of the peripheral feed are connected together by a hybrid circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.