Electronic device with capacitively loaded antenna
US9093752B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2013 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Dec 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/371
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electronic device may have an antenna for providing coverage in wireless communications bands of interest such as a low frequency communications band, a middle frequency communications band, and a high frequency communications band. Slot structures in the antenna that might reduce efficiency in the high frequency communications band may be avoided by capacitively loading the antenna and omitting meandering paths in the antenna. A capacitor may be coupled between an antenna ground formed from a metal housing structure and an antenna resonating element having a curved shape that conforms to the shape of the edge of the electronic device. The capacitor may have interdigitated fingers and may be adjustable to tune the antenna. The antenna may transmit and receive radio-frequency signals through a display cover layer in a display and a dielectric antenna window portion of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.