Active filter design software AktivFilter is a powerful software for the design of active bandpass filters, highpass filters, lowpass filters and bandreject filters with operational amplifiers. The special feature of this program is the ability of co-ordinating the component values of the filter circuit with the type of operational amplifier and with the standard series (E12, E24, E48 or E96) of the component values. Thus a later adjustment of the built circuit becomes unnecessary. For many applications AktivFilter enables you to use inexpensive opamp types instead of expensive ones. Developers of audio electronics, e.g. studio and high end equipment, can also profit from AktivFilter, as this program supports some high-quality audio opamps....Go

Filtronetics has Bandpass Filters, Clock Oscillators, Quartz Crystals and RF SAW Filters. Highest quality Custom LC Filters|Microwave Filters|Ceramic Filters|RF SAW Filters|Crystal Filters|Bandpass Filters|Low Pass Filters|High Pass Filters|Clock Oscillators|Quartz Crystals. A valued supplier, designer and manufacturer of electronic frequency products Filtronetics based in Kansas City Missouri....Go

About FilterSyn
FilterSyn is a planar/coaxial filter synthesis module for IE3DLibrary.
FilterSyn's Features
1. Uses accurate analytical models.
2. Handles low-pass, bandpass, and bandstop filters in 25 structures.
3. Covers coaxial, microstrip, stripline/LTCC, and stripline-like structures.
4. Performs fast simulation and synthesis.
5. Has a built-in Genetic-Algorithm (GA) optimizer.
6. Has a friendly graphical user interface (GUI).
7. Creates filter objects and exports them to IE3D.
8. Can be invoked from a filter layout as well.
9. Has been verified experimentally and extensively.

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This chapter, lc filters is the most interesting tutorial of all for newcomers to radio design. Without a thorough grasp of lc filters you will never fully understand the ramifications of receiver and transmitter design. Here you should gain a complete understanding of the selection and design basics needed for mastering the design of lc filters...Go

Cool infomation about filters design,you must visit this site....Go

A step by step, easy to follow and duplicate electronic tutorial on the design of LC Filters for your electronic project, ranging from the quite simple to the very complex, to incorporate into your next radio design....Go

the transformation of a low pass filter into a high pass filter...Go

Introduction to Frequency Devices Analog Filter Design Available Filter technology Digital Filter Design Signal Reconstruction Choosing a Filter Solution...Go

Schematica Software 555 timer and active filter circuit design and simulation.U can download demo version....Go

QuickFil is a software for designing passive electronic filters. The result is an optimized circuit of inductors (L) and capacitors (C). Types of filters: * Lowpass * Highpass * Bandpass * Bandstop * Allpass * Asymmetric bandpass filters * Parametric bandpass filters...Go

AADE Filter Design is now FREEWARE.You can download it....Go

A technically-oriented site for engineers and technicians offering to the fraternity a collection of original engineering software. There are some good filter design software....Go

Software solutions for passive, active, Tx line, IIR, and FIR filter design, synthesis, and analysis.This software can do Passive LC Filters,Digital Filters,Switched Capacitor Filters,Active Filters,Transmission Line Filters....Go