发明名称 RADIO-FREQUENCY HEARING AID PROTECTOR FOR WIRELESS COMMUNICATIONS PRODUCTS
摘要 A wireless communications device with low magnetic field emission is provided by disposing a magnetically absorptive material near the base of an antenna of a handset of the device. The magnetically absorptive material is preferably a ferrite-type metal oxide dispersed within a silicone rubber medium. The ferrite-type metal oxide acts to attenuate the magnetic field generated in the near field of the antenna. Interference with hearing aids worn by wireless communications device users is thereby reduced.
申请公布号 CA2203715(A1) 申请公布日期 1997.10.29
申请号 CA19972203715 申请日期 1997.04.25
申请人 SIEMENS BUSINESS COMMUNICATION SYSTEMS, INC.;SIEMENS ROLM COMMUNICATIONS INC. 发明人 GILMORE, DILLARD;BERGER, H. STEPHEN
分类号 H04R25/00;H01Q1/24;H01Q17/00;H04B1/38;H04M1/02;H04M1/03;H04M1/60;H04Q7/32;(IPC1-7):H04Q7/32;H05K9/00 主分类号 H04R25/00
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