Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof
US7629929B2 · kind B2 · utility
3Cited by
8References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2006 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Oct 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0457
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna, a RFID tag using the same, and an antenna impedance matching method thereof are provided. The antenna includes: a radiation patch for deciding a resonant frequency of the antenna; a ground plate disposed in parallel to the radiation patch; and a feeder disposed between the radiation patch and the ground plate in parallel for providing a RF signal to an element connected to the antenna, wherein the feeder includes a microstrip feed line proximately coupled to the radiation patch by being formed perpendicularly to the resonant length direction of the radiation patch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.