Antenna device
US11165157B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 13, 2017 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna device includes a ground plate, a patch portion disposed parallel to the ground plate with a particular spacing, a plurality of short circuit portions that electrically connect the patch portion to the ground plate, and a loop portion which is a loop shaped conductor member at a particular spacing from an outer edge portion of the patch portion. The patch portion has an area which forms an electrostatic capacitance that causes parallel resonance with an inductance provided by the short circuit portions at a particular target frequency. The loop portion is formed with a perimeter length which is an integral multiple of the wavelength of radio waves at the target frequency. A feed point is disposed on the loop portion, and current is supplied to the patch portion through the loop portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.