Tag antenna using microstrip line, method of manufacturing the same and radio frequency identification tag
US8654012B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 15, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | May 18, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/2208
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a Radio Frequency Identification (RFID) tag antenna. The tag antenna includes a lower dielectric substrate and an upper dielectric substrate. The lower dielectric substrate is provided at a lower surface thereof with a ground plane and at an upper surface thereof with two microstrip lines. The microstrip lines each have an open-end, the open ends spaced apart from each other from a middle of the lower dielectric substrate while facing each other to form a radiating slot from which radiation of electromagnetic waves occurs. The upper dielectric substrate is provided at an upper surface thereof with at least one electric capacitive device and is stacked on the lower dielectric substrate. The RFID tag antenna enhances radiation efficiency while achieving miniaturization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.