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.
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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 |
代理机构 |
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