high frequency sine to square converter

Discussion in 'Homework Help' started by ayeaac, Aug 13, 2013.

  1. ayeaac

    Thread Starter New Member

    Aug 13, 2013
    1
    0
    i need a design for a sine to square converter for a high frequency of 50MHz using discrete components. please inform if you know. thank you.
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,093
    3,033
    Transistor comparator.

    But you need high speed (i.e.. 500MHz) operation to get good squaring of a 50MHz signal. That sort of frequency requires great attention to RF design. Compactness, short traces, etc.
     
  3. #12

    Expert

    Nov 30, 2010
    16,257
    6,759
    A pair of fast Shottky diodes would square it off. Some of them go down to .1ns Trr.
     
  4. Shagas

    Active Member

    May 13, 2013
    802
    74
    I've been meaning to ask this question for some time .
    Do you mean a diode clamp circuit in which a shottky is put between the base and collector to prevent the transistor to go into heavy saturation therefore increasing speed and in this case the square wave "squareness"?

    I first heard about it in some post by RonH
     
  5. #12

    Expert

    Nov 30, 2010
    16,257
    6,759
    I was thinking about a very simple clipper, based on the lack of information in the question.
     
  6. #12

    Expert

    Nov 30, 2010
    16,257
    6,759
    Hang on...I meant this. It will have symmetry about the zero axis.
     
    Shagas likes this.
  7. assembler_C

    New Member

    Mar 19, 2008
    7
    2
    No...

    I think that #12 is talking about a back-to-back pair of shottky diodes between output and groung and a 50 ohm (or so) resistor between input and output.
     
    #12 likes this.
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