Non-contact IC card reading/writing apparatus
US7164344B2 · kind B2 · utility
24Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Aug 8, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A non-contact IC card reading/writing apparatus having a superior reception characteristic includes a loop antenna, a resonant circuit unit, a wireless transmitting unit, and a wireless receiving unit. The resonant circuit unit, the wireless transmitting unit, and the wireless receiving unit are coupled to each other via any one of a directional coupler, a circulator, and an isolator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.