发明申请
- 专利标题: Multi-band receiver
- 专利标题(中): 多频段接收机
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申请号: US10503789申请日: 2002-01-21
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公开(公告)号: US20050143031A1公开(公告)日: 2005-06-30
- 发明人: Oswald Moonen , Peter Rutten , Stephanus Crijns
- 申请人: Oswald Moonen , Peter Rutten , Stephanus Crijns
- 优先权: EP02075494.1 20020206
- 国际申请: PCT/IB03/00190 WO 20020121
- 主分类号: H04B1/26
- IPC分类号: H04B1/26 ; H03D7/18 ; H03J3/08 ; H04B1/30 ; H04B1/40 ; H04B1/18
摘要:
A multi-band receiver for receiving an input signal having a frequency situated either in a first band or in a second band. The receiver comprising a mixer for combining an amplified signal having substantially the same frequency as the input signal with a periodical signal generated by a local oscillator. The mixer generates an intermediate frequency signal, the intermediate frequency signal (IF) being inputted to an IF band-pass filter. A central frequency of the band-pass filter is substantially equal to a frequency of the intermediate frequency signal. The receiver is characterized in that the central frequency of the IF band-pass filter is substantially independent of a combining mode of the amplified signal and the periodical signal, the combining mode being selected from an upper heterodyning mode and a lower heterodyning mode.
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