Antenna apparatus
US9812769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2016 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Jun 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/42
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna apparatus includes a first ground plane; a second ground plane having first, second, third and fourth sides, a cutout part, and a slit having an open end; a first radiating element having first and second lines, and a feeding point; a second radiating element having a third line; and a parasitic element having first and second parasitic lines. A length from the feeding point to an end part of the slit is set to one-half wavelength at a first communication frequency, a total length of a length from an end part of the fourth line to the feeding point, and a length from a ground potential point to an end part of the second parasitic line is set to one-half wavelength at a second communication frequency, and a length of the third line and the fourth line is set to one-quarter wavelength at a third communication frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.