| 摘要 |
Device for use in connection with transponders, where a nonlinear element (27), such as a diode, is used for modulating an information signal onto an incoming, high frequency electromagnetic signal which is transmitted from an interrogator. The transponder is provided for reflecting the modulated signal back to the interrogator. Furthermore, means are provided for limiting the reflected signal to an upper effect limit given by the amplitude of the information signal, so that the reflected signal moves in a more linear area for strong signal pressure.
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