Square Wave Generator

  • Thread starter SwissApe
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  • #1
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Greetings,

Sorry to bother you with such a trivial question, but I'm looking for a high frequency (>500 MHz) 2 channels square wave generator.
Do you know any material (not too expensive if possible) that would match these specifications?

Many thanks!
 

Answers and Replies

  • #2
f95toli
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Can you be a bit more specific?
Do you mean a generator with a 500 MHz analog bandwidth OR a generator that can produce a 50-50 square wave with a 1/500e6 s period?
In either case it sounds like you are asking about something called a pulse pattern generator. You can buy them from e.g. Agilent or Anritsu.
The price will probably be somewhere in the range $10 000-$30 000.
 
  • #3
berkeman
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Greetings,

Sorry to bother you with such a trivial question, but I'm looking for a high frequency (>500 MHz) 2 channels square wave generator.
Do you know any material (not too expensive if possible) that would match these specifications?

Many thanks!
500MHz 50 Ohm signal generators are available, but I don't know about the square wave part. What are you intending to use it for? 500MHz square waves exist on high-speed digital integrated circuits, but are not generally driven off-chip.
 
  • #4
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i was going to suggest DDS but doubt there's any chip out there to work with
 
  • #5
f95toli is right, a real 2 channel square wave generator capable of 500Mhz is going to be pretty expensive.

But I'm guessing that you're interested in making something?

DDS - (Direct Digital Synthesis) chips are interesting. Analog Devices makes some but I'm not sure if you can get 500Mhz output from these.

Look up "astable multi-vibrator" circuits. Depends on your purpose, of course, but a simple circuit might be good enough.
 
  • #6
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I don't know if this would satisfy your needs, but couldn't you take a 500mHz sine wave and put two diodes in anti-parallel across the output, amplify the voltage if necessary, then use zener diodes to help eliminate the non-horizontal parts of the wave?

The problem comes if you need to alter the duty cycle of one part of the wave.
 
  • #7
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Last edited by a moderator:
  • #8
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Many thanks for all your answers, I'll see what I can find in commercial pulse generators... I'm afraid I'm not good enough to make such a device on my own.
 

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