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Listed are resources for doing the design yourself. There are many magazine articles and websites with useful information
that can either assist you with your own design, or convince you that it is best to find an expert to do it for
you.
These companies here can supply your needs for any type of filter. They provide not only a stock of off-the-shelf
models, but can also design and manufacture custom models for meeting specialty selectivity, group delay, insertion
loss, form factor, power handling, or other unique parameters.
AADE Filter Design and Analysis V 4.4
aade.com/filter32/download.htm
Free download from
Almost All Digital Electronics.
A Filter Primer
maxim-ic.com/appnotes.cfm/an_pk/733
This comprehensive article covers
all aspects of analog filters. By Maxim Integrated Products, Dallas Semiconductor.
Active Filter Design and Specification for Control of Harmonics in Industrial and Commercial Facilities
dranetz-bmi.com/pdf/activeFilter.pdf
Abstract by Mark McGranaghan, Electrotek Concepts, Inc.
Analog Filter Design Demystified
maxim-ic.com/appnotes.cfm/an_pk/1795
This article shows
how to design analog filters. It starts by covering the fundamentals of filters, goes on to introduce the basic
types like Butterworth, Chebyshev, and Bessel, and then guides the reader through the design process for lowpass
and highpass filters. Included are the derivation of the equations and the circuit implementation.
An Intra-Disciplinary Capstone Project in Digital Filter Design
portal.acm.org/citation.cfm?id=882979
By Jim Armstrong, Amy Bell, and Gail Gray, Bradley Department of Electrical and Computer Engineering, Virginia Tech.
Basics of Anti-Aliasing: Using Switched-Capacitor Filters
maxim-ic.com/appnotes.cfm/an_pk/3494
By Maxim Integrated Products, Dallas Semiconductor.
Custom Filter Design
mptcorp.com/whitepapers/wp005reva.pdf
White paper from Microwave
Packaging Technology, Inc.
Designing Active High Speed Filters
national.com/an/OA/OA-26.pdf
From National Semiconductor.
Designing Elliptic Filters With Maximum Selectivity
edn.com/index.asp?layout=article&articleid=CA46926
By Celestino A Corral, Motorola Inc.
Designing Filters Using the Digital Filter Design Toolkit
sss-mag.com/pdf/sdigfltr.pdf
Application note by Rahman Jamal, Mike Cerna, John Hanks, National Instruments.
Design of the Inverter Output Filter for Motor Drives with IRAMS Power Modules
irf.com/technical-info/appnotes/an-1095.pdf
Application note from International Rectifier.
Digital Filter Design
apicsllc.com/apics/Sr_3/Sr_3.htm
Writing Difference Equations For
Digital Filters From Applied Industrial Control Solutions, by Brian T.
Digital Filter Design Tool
ptolemy.berkeley.edu/java/ptfilter.htm
This is an applet that
allows you to design digital filter graphically.
EMI Filter Design and Stability Assessment of DC Voltage Distribution based on Switching Converters
doc.cern.ch/archive/cernrep/2001/2001-005/p353.pdf
Abstract from FERMILAB.
Filter Basics: Anti-Aliasing
maxim-ic.com/appnotes.cfm/an_pk/928
This application note
discusses the different filtering requirements for a sampled data system. It describes aliasing and the types of
filters that can be used for anti-aliasing.
Filter Design and Analysis
circuitsage.com/filter.html
Filter design articles, tools,
software, and books from Circuit Sage.
Filter Design in Thirty Seconds
focus.ti.com/lit/an/sloa093/sloa093.pdf
Need a filter—fast?
No theory, very little math—just working filter designs, and in a hurry? This is the right document. From Texas
Instruments.
Filter Design Using Integrator Blocks
maxim-ic.com/appnotes.cfm/an_pk/727/
By Maxim Integrated
Products, Dallas Semiconductor.
FIR and IIR Digital Filter Design Guide
freqdev.com/guide/DgtlFltrDsgnGd.pdf
From Frequency
Devices.
FIR Digital Filter Design Applet
dsptutor.freeuk.com/FIRFilterDesign/FIRFiltDes102.html
From DSP Tutor.
Geotextile Filter Design, Application, and Product Selection Guide
tencate.com/TenCate/Geosynthetics/documents/Tech
Notes/TN_geofilter.pdf
From Ten Cate Nicolon.
High-Pass Butterworth Filter Design
bessernet.com/articles/highpfilt/bworth_highp_03.html
From Besser Associates.
High performance and Low power FIR Filter Design Based on Sharing Multiplication
ieeexplore.ieee.org/xpl/freeabs_all.jsp?tp=&arnumber=1210504&isnumber=27241
By Jongsun Park, Woopyo Jeong, Hunsoo Choo, Hamid Mahmoodi-Meimand, Yongtao Wang, and Kaushik Roy, School of Electrical
and Computer Engineering, Purdue University.
IIR Digital Filter Design Applet
dsptutor.freeuk.com/IIRFilterDesign/IIRFiltDes102.html
From DSP Tutor.
Implementation of High-Performance Integrated Analog Filters and Filter Banks
imit.kth.se/info/FOFU/INTELECT/GSPs/hjalmarsson.pdf
Project by Lars Wanhammar, Electronics Systems, Linköping University.
Inline TM110-Mode Filters With High-Design Flexibility by Utilizing Bypass Couplings of Nonresonating
TE 10=01 Modes
ece.uvic.ca/~jbornema/Journals/085-03mtt-rab.pdf
Abstract by Uwe Rosenberg, Smain
Amari, and Jens Bornemann.
Input Filter Design for Switching Power Supplies
techonline.com/community/tech_topic/power_supplies/21453
Michele Sclocchi National Semiconductor.
Introduction to Digital Filters
dsptutor.freeuk.com/digfilt.pdf
A tutorial.
LC Band Pass Filter Circuit
radio-electronics.com/info/circuits/lc_bandpassfilter/lc_bpf.php
Overview and information about the basics of the design of an RF LC bandpass or band pass filter circuit including
the design considerations and formulae (formulas) and construction tips. From Radio-electronics.com.
LC Filter Design
users.cs.york.ac.uk/~fisher/lcfilter
An interactive design package for
designing analogue (i.e. hardware) filters made of inductors and capacitors (Ls and Cs).
LC Filters Tutorial
my.integritynet.com.au/purdic/lcfilters.htm
By Ian C. Purdie.
LC High Pass Filter Circuit
radio-electronics.com/info/circuits/lc_highpassfilter/lc_hpf.php
The design considerations and formulae (formulas) for an LC (inductor capacitor high pass filter. From Radio-electronics.com.
LC Low Pass Filter Circuit
radio-electronics.com/info/circuits/lc_lowpassfilter/lc_lpf.php
The design considerations and formulae (formulas) for an LC (inductor capacitor) low pass filter. From Radio-electronics.com.
Low-Pass Butterworth Filter Design
bessernet.com/articles/lowpfilt/bwfiltstep00.html
Article
from Besser Associates.
Low-Sensitivity, Lowpass Filter Design
national.com/an/OA/OA-27.pdf
From National Semiconductor.
Low-Sensitivity, Highpass Filter Design with Parasitic Compensation
national.com/an/OA/OA-29.pdf
From National Semiconductor.
Low-Sensitivity, Bandpass Filter Design with Tuning Method
national.com/an/OA/OA-28.pdf
From National Semiconductor.
Matheonics Technology
matheonics.com
519-578 2092 / Kitchener, Ontario, Canada
FAZA
software tool for the analog filters design - free demo. Also a very extensive filter design tutorial.
Minimizing Component-Variation Sensitivity in Single Op Amp Filters
maxim-ic.com/appnotes.cfm/an_pk/738
By Maxim Integrated Products, Dallas Semiconductor.
Nonlinear Order Statistic Filter Design: Methodologies and Challenges
ieeexplore.ieee.org/xpls/abs_all.jsp?tp=&arnumber=938611&isnumber=20289
Abstract by Moncef Gabbouj and Jaakko Astola, Tampere University of Technology, Finland.
Novel Designs for Elliptic Bandstop Filters
rfdesign.com/files/4/0299Geffe75.pdf
From
RF Design, by Philip R. Geffe.
Parks-McClellan FIR Filter Design
dsptutor.freeuk.com/remez/RemezFIRFilterDesign.html
From DSP Tutor.
Power Supply Output Filter Design - Overshoot
smpstech.com/over0000.htm
By Jerrold Foutz,
SMPS Technology.
Practical FIR Filter Design in MATLAB
mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=3216&objectType=file
This tutorial white-paper illustrates practical aspects of FIR filter design and fixed-point implementation along
with the algorithms available in the Filter Design Toolbox and the Signal Processing Toolbox for this purpose.
Quantized FIR Filter Design Using Compensating Zeros
interscience.wiley.com/cgi-bin/summary/115806279/SUMMARY?CRETRY=1&SRETRY=0
Article by Kishore A. Kotteri, Amy E. Bell, and Joan E. Carletta.
rfcurrent.com
rfcurrent.com
Devoted to RF & microwave filter theory and design.
Microwave Lowpass Filters with a Constricted Equi-Ripple Passband
rfcurrent.com/wp-content/uploads/2010/12/amw_Jul_v13_no7.pdf
by Dieter Pelz
Revision of Cascade Synthesis Theory Covering Cross-Coupled Filters
rfcurrent.com/wp-content/uploads/2010/12/mtt_june2002.pdf
by Dieter Pelz
RF Filters
arrl.org/rf-and-af-filters
A brief description of RF and audio filters, and
a lot of links to articles on the ARRL's website. By the ARRL.
Using the Analog Devices Active Filter Design Tool
analog.com/Wizard/filter/detail_filter_help.pdf
Application note from Analog Devices.
VCO Inductor and External Loop Filter Design Guidelines for the AT86RF401X
atmel.com/dyn/resources/prod_documents/doc5074.pdf
From Atmel Corporation.
Waveguide EM Filter Analysis and Design
guidedwavetech.com/wgchoose.htm
From Guided Wave
Technology.
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