1) “Dishal” by DJ6EV
![Crystal Filter Design Software Download Crystal Filter Design Software Download](/uploads/1/3/3/8/133818232/640558587.png)
This software takes into account crystal parallel capacitance (Cp).
Crystal Cp is a reason for crystal ladder bandwidth narrower than designed in theory.
You need to provide crystal series resonance frequency and crystal inductance Lm or capacitance Cm. If you cannot measure Cp, you can assume value of 4pF.
”Dishal” includes set of useful tools for computing:
– crystal parameters using G3UUR method
– crystal parameters using 3dB method
– LC impedance match
– transforming series LC circuit into parallel one
– fine tubing crystal in a filter using series capacitance (moving resonance up)
Crystal Cp is a reason for crystal ladder bandwidth narrower than designed in theory.
You need to provide crystal series resonance frequency and crystal inductance Lm or capacitance Cm. If you cannot measure Cp, you can assume value of 4pF.
”Dishal” includes set of useful tools for computing:
– crystal parameters using G3UUR method
– crystal parameters using 3dB method
– LC impedance match
– transforming series LC circuit into parallel one
– fine tubing crystal in a filter using series capacitance (moving resonance up)
‘Dishal’ computes Chebyshev and Butterworth designs, it also contains module for Cohn filters.
- The crystal ladder filter design program to design your own crystal bandpass filters. Version 2.0.5.2 by Horst Steder, DJ6EV, November 2015. Free for personal use. This is like the Swiss Army knife of all simulators! Intuitive handling with obviously unlimited capabilities! We love it from the first day it established itself.
- 1.3.4 Filter Design Process. 1.5 to 3 more exotic crystal or SAW filter can be used, and for shape factors less than 1.5 an alternate design approach should be used. 7 BWPB BWSB Power (dB) fpl fsl fpu fsu Figure 3: Bandpass Filter Transition Band and Shape Factor Definitions.
- Commit to any design, make sure you can buy the critical parts you need, especially the crystal or mechanical filters for your IF. For example, many receiver designs use a 455 KHz IF. Unfortunately, I have yet to find an easy source for 455 KHz crystals for building filters.
I used crystal with relatively low Lm and high Cm and filters computed with his software had slightly narrower bandwith than designer. Anyway I recommend ‘Dishal’ for most applications.
Capacitor filter selection and characteristics. PCB Hardware design best practices and layout considerations checklists: – Standard PCB design/layout practices – Special Ethernet layout considerations – Special DDR Layout considerations 6. Software protection techniques. Microcontroller reference circuit schematics with.
URL: http://fa-nwt.akadns.de/blogs/media/blogs/dj6ev/quarzfilter/deDishal2026.zip
Article with program description and good practical advices: http://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf
Article with program description and good practical advices: http://www.arrl.org/files/file/QEX_Next_Issue/Nov-Dec_2009/QEX_Nov-Dec_09_Feature.pdf
2) “AADE Filter Design and Analysis”
![Design Design](/uploads/1/3/3/8/133818232/873791953.jpg)
Software for designing many types of filters – not only crystal ladder.
It requires to specify many crystal parameters. But practical implementation of computed filter has parameters closely matching designed values.
It can design any type of crystal Lauder filter.
I used AADE to design my home made crystal filters for Elecraft K3 transceiver.
The help file is very good, you shouldn’t start work with AADE without Reading the tutorial
I used AADE to design my home made crystal filters for Elecraft K3 transceiver.
The help file is very good, you shouldn’t start work with AADE without Reading the tutorial
URL: http://www.aade.com/filter.htm
3) LCFD – “Ladder Crystal Filter Design” by UA1OJ
Crystal parameters are determined using G3UUR method
I haven’t tested filters designed with this software. Determining crystal parameters is working fine.
LCFD can design Chebyshev and Butterworth filters.
I haven’t tested filters designed with this software. Determining crystal parameters is working fine.
LCFD can design Chebyshev and Butterworth filters.
URL: http://www.cqham.ru/lcfd.htm
Tags: crystal filters, crystal ladder, design
Dowwnload this free windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters By AADE Hits: 23560 | Votes: 102 | Rating: 7.23
About AADE Filter Design
The resource is currently listed in dxzone.com in a single category. The main category is Filter design software that is about Filter design software. This link is listed in our web site directory since Wednesday May 28 2008, and till today 'AADE Filter Design' has been followed for a total of 23560 times. So far received 102 votes for a total score of 7.23/10You may find other interesting sites similar to this one, under the following categories:
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