ELECTROACOUSTIC TRANSDUCER AND RESONATOR THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a Langevin type electroacoustic transducer simply and downsizedly configured and the leakage magnetic flux of which is reduced and to provide a resonator thereof. SOLUTION: The mobile communication terminal with a communication antenna 22 for communication via a mobile communication network includes a housing integrally formed by a resin material and a metallic material and comprising a reception part A and a transmission part B, and the housing in the vicinity of its part for containing the communication antenna 22 is made of only the resin material. COPYRIGHT: (C)2007,JPO&INPIT