Radiocommunication device and a dual-frequency microstrip antenna
US6218990A · kind A · utility
24Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0421
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna has a patch with a rear edge provided with a short circuit enabling a quarter-wave resonance to be established. A half-wave resonance can also be established between two lateral edges of the patch. The same coupling device couples the antenna to a transmitter or receiver for each of the two resonant frequencies. It includes a coupling strip penetrating the patch between the edges of a slot extending from one lateral edge. The antenna is particularly applicable in dual mode mobile telephone system using GSM and DCS standards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.