| 摘要 |
A radio network comprises a first device ( 2 ) with a transmitter ( 3 ), whereby a second device ( 4 ) is to be protected from electromagnetic radiation of the transmitter ( 3 ) and at least one of the devices ( 2, 4 ) is mobile. One of the devices ( 2, 4 ) has a wireless interrogation system ( 6 ) that interacts with a reflecting device ( 5 ) of the other device ( 4, 2 ), and one of the devices ( 2, 4 ) can be switched according to the distance from the other device, this distance being detected by means of the interrogation system ( 6 ) and the reflecting device ( 5 ), between a normal operating mode (N 2 , N 4 ) and a special operating mode (S 2 , S 4 ) provided for comparatively short distances. The operating mode of the device comprising the transmitter ( 3 ) is variable. Optionally, the transmitter ( 3 ) can have a transmit power that is dependent on the operating mode.
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