Hearing instrument comprising a parasitic battery antenna element
US11570559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Sep 2, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hearing instrument comprises a wireless communication unit interconnected with an antenna for emission and reception of an electromagnetic field having an RF wavelength, a speaker interconnected with the wireless communication unit and being configured to provide an output audio signal. A battery is configured to supply power to the hearing instrument and a filter circuit interconnects the battery and a power management circuit of the hearing instrument. The antenna extends from a feed and at least a part of the antenna being is arranged adjacent the battery. A distance between the at least part of the antenna and the battery is below 1/40 of the wavelength. The filter circuit is configured to de-couple the battery and the power management circuit at frequencies above 3 MHz and configured to connect the battery to the power management circuit at frequencies below 300 kHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.