| 摘要 |
According to an exemplary embodiment, a duplexer includes a single-ended to differential filter, where the single-ended to differential filter includes a ladder stage coupled to an antenna port of the duplexer. The single-ended to differential filter further includes a balun stage coupled to the ladder stage. The single-ended to differential filter further includes a lattice stage coupled to the balun stage, where the balun stage is configured to provide single-ended to differential signal conversion between the ladder stage and the lattice stage. The lattice stage can be coupled to differential receive ports of the duplexer. The duplexer can further include a single-ended to single-ended filter coupled between the antenna port and a transmit port of the duplexer.
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