| 摘要 |
A complex bandpass-notch filter is disclosed. It provides both bandpass filtering and image rejection, in complex frequency domain, along with a quadrature signal generation. Consequently, this complex bandpass-notch filter provides the both functions of a bandpass filter and a passive polyphase filter. The complex bandpass-notch filter can be used for RF receivers and integrated TV and cable tuners. A low-IF single-conversion integrated tuner and a zero-IF direct-conversion integrated tuner incorporating with this complex bandpass-notch filter are disclosed for terrestrial and cable systems.
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