Double superheterodyne tuner

Double superheterodyne tuner

  • CN 1,352,496 A
  • Filed: 05/29/2001
  • Published: 06/05/2002
  • Est. Priority Date: 03/27/1995
  • Status: Active Application
First Claim
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1. double superheterodyne tuner, have by input high-frequency signal and first oscillation signals according being synthesized the first frequency converting means that forms first intermediate-freuqncy signal and by above-mentioned first intermediate-freuqncy signal and second oscillation signals according are synthesized the second frequency converting means that forms second intermediate-freuqncy signalThis double superheterodyne tuner is characterised in that:

  • Printed circuit board (PCB) (41) with first and second is arranged,The circuit that comprises above-mentioned first frequency converting means, second frequency converting means is made of Plane Installation parts (48) and insertion parts (47), above-mentioned Plane Installation parts (48) and above-mentioned insertion parts (47) are installed on above-mentioned first of above-mentioned printed circuit board (PCB) (41)In above-mentioned second the most scope of above-mentioned printed circuit board (PCB), form grounding pattern (50).

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