Compact annular-slot antenna
US6670929B2 · kind B2 · utility
0Cited by
10References
7Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/106
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Planar antenna carried by a substrate comprising an annular slot, which is dimensioned to operate at a given frequency and which is fed via a line (2), such as a microstrip line, in a short-circuit plane of which the slot is situated. The annulus formed by this slot (1a), is deformed as indentations in at least one zone of the plane in which the electric field is a minimum for the given frequency and a given mode, this making it possible to obtain a lengthening of the slot perimeter with respect to an annular slot (1), of corresponding circular shape, without surface extension of the substrate zone wherein the slot is made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.