Wireless radio telephone apparatus
First Claim
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1. A wireless two-way radio telephone apparatus, comprising:
- an upper shell containing breakthroughs for operating element;
a lower shell connected to said upper shell;
an electrically conducting screening element located within a region of one of said upper shell and lower shell for screening off EMV radiation generated by the electronics of said apparatus, said screening element being magnetically conductive for screening off HF and LF-radiation; and
a device for applying to the screening element a counter field with low- and high-frequency field components for at least partially erasing a field produced by electronics of the apparatus in order to additionally reduce a field component of energy radiation of a speaking apparatus in the direction of the head of the user.
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Abstract
A wireless telephone apparatus, in particular a mobile radio telephone or hand-set, a cordless telephone or the like, comprises an upper shell containing breakthroughs for a keyboard, and lower shell. In the area of the upper shell and the lower shell, there is at least one electrically and magnetically conducting screening element for screening the head of the use against EMV. According to one embodiment of the invention, the screening element is provided in the form of a lining of the upper shell or lower shell, for example in the form of an MU-metal sheet.
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Citations
20 Claims
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1. A wireless two-way radio telephone apparatus, comprising:
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an upper shell containing breakthroughs for operating element;
a lower shell connected to said upper shell;
an electrically conducting screening element located within a region of one of said upper shell and lower shell for screening off EMV radiation generated by the electronics of said apparatus, said screening element being magnetically conductive for screening off HF and LF-radiation; and
a device for applying to the screening element a counter field with low- and high-frequency field components for at least partially erasing a field produced by electronics of the apparatus in order to additionally reduce a field component of energy radiation of a speaking apparatus in the direction of the head of the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification