Performance comparison of various magnetic circuits of integrated microspeakers and dynamic receivers used for mobile phones
Kwang-Seok Kim, Joong-Hak Kwon, Sang-Moon Hwang, Gun-Yong Hwang · Journal of Applied Physics · 2008
An integrated device (a microspeaker and dynamic receiver within one structure) has been developed to actualize efficient size reduction. In this article, three magnetic circuit structures of an integrated device are introduced and their characteristics are compared. A systematic analysis of a magnetic field is performed using finite element method analysis. In conclusion, type 1 has the highest electromagnetic force and the best acoustical characteristics.