# Gaussian Filter Design - RF Cafe Forums

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RF-Ban
Post subject: gaussian filter design
Unread postPosted: Fri Apr 22, 2005 4:35 am
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Joined: Sat Feb 26, 2005 5:24 pm
Posts: 16
Location: Lille, FRANCE
Hello,

I'm working on modelling a system that include a gaussian low pass filter on litterature on the net i can find information about the waveform of the filter but i can't find nothing about the formulas to determine the L,C and R values. Does someone can help me or knows a website with this information ?
Thanks

Franck

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Guest
Post subject:
Unread postPosted: Fri Apr 22, 2005 8:32 am

If you need a design of a filter, there is a program on the website:http://tonnesoftware.com/. called ELSIE. You can put in your parameters ( stop band, passband etc) and it will spit out the values for the filter.

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RF-Ban
Post subject:
Unread postPosted: Tue Apr 26, 2005 1:16 am
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Joined: Sat Feb 26, 2005 5:24 pm
Posts: 16
Location: Lille, FRANCE
Thanks it's a very useful tool!!!

Franck

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Kirt Blattenberger
Post subject:
Unread postPosted: Wed May 04, 2005 11:22 pm
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Joined: Sun Aug 03, 2003 2:02 pm
Posts: 308
Location: Erie, PA
Greetings RF-Ban:

After reading of your need for the Gaussian prototype values, I did a search for them and could not locate tables for the Gaussian filter. So, I used a filter design program and set the frequency for 1/(2*pi) and the source/load terminations for 1 ohm and came up with a table of values for order 3 through 10. If you still need them, you can find them here:

http://www.rfcafe.com/references/electr ... values.htm

While I was at it, I updated the Chebyshev tables to include even-order filter values. A lot of tables only supply odd-order values, because the insertion loss of a Chebyshev at DC (0 Hz) is equal to the ripple value rather than 0 dB.

- Kirt Blattenberger :smt024

Posted  11/12/2012

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