Antenna element, loop antenna using the antenna element, and communications control apparatus using the antenna for wireless communications medium
US7079084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Oct 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention presents an antenna element capable of attenuating electric far filed while suppressing attenuation of magnetic near field of electromagnetic field radiated from loop antenna as an application example of antenna element, and a loop antenna and a communication control apparatus of wireless communications medium using the same.The antenna element of the invention comprises a conductor, and a conductive electromagnetic shield disposed on its surface by way of an insulator. The conductive electromagnetic shield has a ground contact, a lead portion, and a plurality of branches, and it is composed so as to determine uniquely the route from an arbitrary point of branches to the ground contact by way of the lead portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.