This free linear circuit simulator is perfect for the rapid simulation of
circuits containing resistors, capacitors, inductors, op amps,
transformers and voltage and current sources. Requires Windows
3.x, 95, 98, NT or 2000. File size 249KB.Download now.
RFSim99 linear simulator from the UK.
RFSim99 is a linear S-parameter based circuit simulator offering
schematic capture, simulation, 1 port and 2 port S-parameter display
and file support, tolerance analysis, stability circles, and much more.
Requires Windows 95, 98, NT or 2000. File size 2045KB. Download
now.
Digital Filter Synthesis
FilterExpress™ is Systolix's professional digital filter synthesis
tool. Version 5.0 is
available for FREE, just click on the link below.
Download the latest version of FilterExpress here: fexp0500.exe
(2.04MB)
Free Java Javascript
Animated Gifs HTML CGI - Adeveloper.com
http://www.planetanalog.com/
Software at DigitalFilter.com
The Quantizer Handy! dec-hex-binDSP Design Performance 38 Freely Usable Digital Filter Design Applets plus DSP Tutorials and Code Segments
WinSpice Web Page This SEEMS like a great package but no specs are shown no info on file/schematic import/export
Tunekit2
Filter Program
Filter Tuning Kit for Windows is a electronic filter synthesis program
and a practical filter tuning aid for actually designing and building a
working filter
Ensemble SV is a feature-limited version of Ansoft's commercially
distributed Ensemble 7.0. It is a field solver based on the Method of Moments
(MoM) simulation engine. It is intended for electrical engineering students
studying topics in RF and wireless circuits and planar antennas. Ansoft
offers this version of Ensemble to foster and encourage the development
of engineering skills throughout the high-frequency design community. Board
Layout Aids
Download
Ensemble SV now! (~30 MB)
PCB
Trace Width Calculator on the Web
FPGA Stuff
DSP in FPGA I'm pissed! I had a link to dsp in fpga IIR etc filtors and I can't find it!Found this ... still looking!
example paper
FPGA Implementation of Digital Filters
Chi-Jui Chou, Satish Mohanakrishnan, and Joseph B. Evans
Proc. 1993 Int. Conf. Signal Proc. Appl. & Tech.
PostScript PDF
Contribution from Atmel
Document Title:
FPGA Digital Filter (FIR24S) -
Application Note
http://www.atmel.com/atmel/acrobat/doc0834.pdf
More adobe stuff
A
Coarse- Grained FPGA Architecture for High- Performance FIR Filtering
Abstract:
FPGA Implementation of Median Filter
Analog
Chips
AKM Semiconductor Inc 24-bit stereo A/D converter, which achieves a typical dynamic range of 116 dB and an SNR of 105 dBLinear Technology's LTC1067 universal-filter building-block IC consists of a pair of identical second-order filter sections
Micro Linear Corp For filtering digital video waveforms after they pass through their reconstruction DACs
Apex Microelectronics power SIP package that you can through-hole or surface mount and that dissipates as much as 100W with less than 1 in.2 of board space
Circuits
Design Ideas from Electronic Design Magazine Ideas for DesignSeveral interesting circuits including a circuit for a phaselock digital synthesizer with less than 4nS jitter