| 摘要 |
<p>Abstract Antenna facility for hearing instruments An antenna facility for hearing instruments, in particular for hearing instruments to be worn in the auditory canal, is disclosed. The antenna facility for a hearing instrument (13) inlcudes an antenna arrangement (16, 36) with a coil core (22, 32) made of magnetically permeable material, which has a preferred transmit and receive spatial direction, and a further electric hearing instrument component, which emits electromagnetic interference radiation, wherein an at least partially flat shield (26, 37) made of magnetically permeable material is arranged between the antenna arrangement and the further hearing instrument component. The shield is arranged transverse to the transmit and receive spatial direction of the antenna arrangement (16, 36) at a distance of 50 to 150 micrometers relative to the coil core (22, 32). The optimal distance results on the one hand from the fact that with an increasing distance the signal-to-noise ratio of the antenna firstly increases and then reduces, with a maximum in the order of magnitude of 100 micrometers. The shield effect between antenna and further hearing instrument component initially increases with an increasing distance in order then to pass into saturation in the case of a distance of the order of magnitude of 100 micrometers. Furthermore, a minimal distance is to be retained on account of the overall installation size. qBlr? Rq 2 FIG 3 n-</p> |
