| 摘要 |
A radiation shield for a hand-held cellular telephone is made up of a metal strip placed between the antenna rod of the telephone and the speaker. The strip has a flat body portion and an upper portion that is curved away from the rod. Overall length of the strip is slightly longer than the antenna rod, and its width is 1 to 1 +E,fra 1/2+EE inches. Radiation fields reaching the head of a user whose ear is placed near the speaker are substantially reduced by the shield.
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