US 12,177,634 B2
Antenna for a bone-anchored hearing aid
Morten Thougaard, Smørum (DK); Oleksandr Rybalko, Smørum (DK); Jens Troelsen, Smørum (DK); and Rune Sø, Smørum (DK)
Assigned to Oticon Medical A/S, Smørum (DK)
Filed by Oticon Medical A/S, Smørum (DK)
Filed on Aug. 31, 2022, as Appl. No. 17/900,308.
Claims priority of application No. 21194390 (EP), filed on Sep. 1, 2021.
Prior Publication US 2023/0064076 A1, Mar. 2, 2023
Int. Cl. H04R 17/00 (2006.01); H04R 25/00 (2006.01)
CPC H04R 25/554 (2013.01) [H04R 17/00 (2013.01); H04R 25/606 (2013.01); H04R 2225/51 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A bone-anchored hearing aid for a recipient comprising:
an antenna configured to transmit and/or receive a wireless signal,
an electronic circuit configured to receive the wireless signal,
one or more vibrator leads,
a vibrator configured for receiving an electrical signal from the electronic circuit via the one or more vibrator leads, and the vibrator is configured to provide a vibrational stimulation to the recipient patient based on the electrical signal, and
a vibrator housing configured to accommodate at least the vibrator, and
wherein each of the one or more vibrator leads is connected to the vibrator and to the vibrator housing via a capacitance, and where the capacitance is configured to eliminate at least a parasitic coupling between the vibrator and the vibrator housing for improving the performance of the antenna; and
wherein the capacitance includes a stack of layers, comprising:
first layer including a conductive material, and the first layer is connected to the electronic circuit via the one or more vibrator leads,
a second layer wherein the first layer is arranged on a primary surface of the second layer, and wherein a secondary surface of the second layer is connected to the vibrator housing, and
wherein the second layer is configured to provide the capacitive coupling between the first layer and the vibrator housing.