PLANAR ELECTRODYNAMIC ACOUSTIC TRANSDUCER WITH RADIAL STRUCTURE (EMBODIMENTS) Russian patent published in 2023 - IPC H04R9/04 

FIELD: acoustics.

SUBSTANCE: planar transducer contains a housing with permanent magnets fixed inside and a flat flexible dielectric thin-film diaphragm, on which a conductive track is applied. The magnets are arranged radially evenly within the working area of the transducer, the diaphragm is parallel to the plane of the bar magnets, which are located on both sides relative to the diaphragm. The track has a continuous structure with radial sections and connector sections. The magnets are located in the spaces between the radial sections of the track. The first group of magnets faces the north pole towards the diaphragm, and the second group of magnets faces the south pole towards the diaphragm. Magnets are distributed in an alternating manner around the circumference, coinciding magnets on different sides of the diaphragm are located with the same pole to each other. According to the second embodiment, the magnets coincide in plan view with the location of the radial sections of the conductive track. According to the third embodiment, the first group of magnets is located in the gaps between the radial sections of the conductive track, the second group of magnets coincides with the location of the radial sections of the conductive track.

EFFECT: increasing the quality of signal transmission, sensitivity and manufacturability.

3 cl, 8 dwg