Two satellite signal dual output low noise frequency demultipliers

Two satellite signal dual output low noise frequency demultipliers

  • CN 205,320,032 U
  • Filed: 01/04/2016
  • Issued: 06/15/2016
  • Est. Priority Date: 01/04/2016
  • Status: Active Grant
First Claim
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1. a double, two satellite-signal dual-output low noise frequency demultiplier, including first order amplifier, second level amplifier, band filter, described first order amplifier, second level amplifier, band filter is sequentially connected in series, it is characterized in that:

  • also include CMOS satellite tuner one, CMOS satellite tuner two, with reference to frequency crystal oscillator one, with reference to frequency crystal oscillator two, DISEQC detection switch circuit one, DISEQC detection switch circuit two, described CMOS satellite tuner one, CMOS satellite tuner two respectively with the described first order amplifier of two branch roads, second level amplifier, band filter be connected in series after described band filter outfan connect, and described first order amplifier, the voltage end of second level amplifier is connected with the CMOS satellite tuner one being connected or CMOS satellite tuner two, described CMOS satellite tuner one is connected in parallel with reference to frequency crystal oscillator one, and CMOS satellite tuner two is connected in parallel with reference to frequency crystal oscillator two, two outfans of CMOS satellite tuner one are connected respectively formation two and are connected branch road with two outfans of CMOS satellite tuner two, described two connect branch road is connected with DISEQC detection switch circuit one or DISEQC detection switch circuit two respectively, and is connected with signal output part, the voltage end of described CMOS satellite tuner one is all connected with the voltage end of DISEQC detection switch circuit one, DISEQC detection switch circuit two, and the voltage end of described CMOS satellite tuner two is all connected with the voltage end of DISEQC detection switch circuit one, DISEQC detection switch circuit two.

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