Invention Grant
- Patent Title: Hearing aid with automatic antenna tuning
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Application No.: US16560323Application Date: 2019-09-04
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Publication No.: US11432079B2Publication Date: 2022-08-30
- Inventor: Poul Henriksen , Søren Nørskov
- Applicant: OTICON A/S
- Applicant Address: DK Smørum
- Assignee: OTICON A/S
- Current Assignee: OTICON A/S
- Current Assignee Address: DK Smørum
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: EP18192732 20180905
- Main IPC: H04R25/00
- IPC: H04R25/00

Abstract:
There is provided a hearing aid with an antenna connected to a transmission and/or reception circuit for transmission and/or reception of the electromagnetic energy via the antenna. A coupling circuit, e.g. including a directional coupler, is configured to sense an electric return power from the antenna, and to generate a power signal based on the sensed electric return power. A controllable impedance circuit is connected to the antenna, so as to allow adjusting of impedance of the antenna in at least two different steps. A processor is configured to generate a tuning control signal to the controllable impedance circuit in response to the power signal. This allows control of the impedance of the antenna for minimizing impedance mismatch, and thus improve performance of the antenna by tuning the impedance to the operating conditions of the antenna, preferably in an automatic manner.
Public/Granted literature
- US20200077209A1 HEARING AID WITH AUTOMATIC ANTENNA TUNING Public/Granted day:2020-03-05
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