| 摘要 |
A passive diversity antenna system is provided to realize a matching unit circuit simply by combining inductors and capacitors. A passive diversity antenna system includes a micro antenna(10) for receiving an FM and AM radio wave, a rear glass antenna(30) for receiving an FM radio wave, and a radio head unit(20) for generating a voice signal. The passive diversity antenna system further includes a head unit(40). The head unit reduces loss of a signal inputted into the rear glass antenna by impedance matching of an output unit of the rear glass antenna and an input unit of the radio head unit by connection between the output unit and the input unit.
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