| 摘要 |
The device comprises a current/voltage transformer (1) coupled by its primary winding between a matching device (2) of an antenna (3) and the output of an amplifier (4) for the supply or the antenna (3), a first (5a) and a second (5b) baseband digital frequency transposition device respectively coupled to the output of the amplifier (4) and to the secondary winding of the transformer (1), and a computation device (7) to compute the impedance of the antenna (3) from signals given by the first frequency transposition device (5a) and the second frequency transposition device (5b).
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