Low/high frequency shared leakage antenna, base station apparatus and close-range detection system using the antenna
US8811278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Jun 20, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a high/low frequency dual wireless location detection and information transmission system which is high in reliability and maintainability, and can be easily installed.A leakage coaxial inner conductor and a conductor line provided in parallel are short-circuited at an end, a single leakage coaxial operation and a loop operation of the inner conductor and the conductor line are performed at the same time, the ID of a tag is communicated using magnetic fields which locally exist near the conductor line by the loop, and wireless position detection and information communications which are less affected by the influence of ambient environments due to electromagnetic waves in a closed area are realized by open-type lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.