| 摘要 |
A triplexer for producing a triplexer by minimum using passive devices is provided to improve the performance of attenuation and insertion loss between bands and minimize the influence of each band. A diplexer 1 connects to the other end of an antenna and separates CDMA band, GPS and PCS band. A diplexer 2 connects to the diplexer 1 and separates the GPS band and the PCS band. A triplexer consists of a bandpass filter of the GPS band. A parallel resonator is parallel connected to a capacitor and an inductor in case that the diplexer 1 separates the CDMA band, GPS and PCS band.
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