Couple-fed multi-band loop antenna
US7978141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Sep 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0457
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is related to a coupled-fed multi-band loop antenna. The antenna comprises a dielectric substrate, a ground plane located on the dielectric substrate and has a grounding point, a radiating portion which comprise a supporter, a coupling trip and a loop strip, and a matching circuit. The coupling strip and loop strip are both located on the supporter, with the coupling strip surrounded by the loop strip. The length of loop strip is about 0.25 wavelength of the antenna's first resonant mode. The loop strip has a first end paralleling with the coupling loop, a second end and a shorting point near the second end and electrically connected to the grounding point on the ground plane. The matching circuit is on the dielectric substrate. One terminal of the matching circuit is connected to the coupling strip, and the other is connected to a signal source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.