Armored magnetic field antenna in printed circuit
US6215455A · kind A · utility
9Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A shielded magnetic-field antenna has at least one turn of a metallic element and metallic tubular shielding positioned around the element. The turn (3a) is produced in a printed circuit on a card made of insulating material (4a). The shielding has two open rings (5a, 6a) each produced in a printed circuit and disposed respectively on a bottom card (9a) and a top card (10a) made of insulating material. The cards are assembled by gripping the turn between the top and bottom cards. A plurality of metallic vias (7a, 8a) connect side edges of the two rings. The vias extend through the cards, and are positioned around the turn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.