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Instructor Rick Lyons has written a new post on his blog at DSP Related discussing ways that you can use an FFT algorithm to compute the IFFT.
If you need to compute inverse fast Fourier transforms (inverse FFTs) but you only have forward FFT software (or forward FFT FPGA cores) available to you, below are four ways to solve your problem.
Instructor Rick Lyons has written a new post on his blog at DSPRelated.com:
I noticed the Wiki web site stated that a Goertzel filter:
"...is marginally stable and vulnerable to
numerical error accumulation when computed using
low-precision arithmetic and long input sequences."
Pasternack's website offers a large selection of RF calculators and converters available for free for general use.
Pasternack's RF calculators and conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. Our RF and microwave calculators and converters will provide the figures you need for your radio frequency engineering needs. RF calculations and RF conversions include metric-standard, link budget, coax cable, power, attenuation, frequency and many more.
EMI Troubleshooting Cookbook for Product Designers is a one-stop guide that will help engineers and technicians who have products which fail to meet EMI/EMC regulatory standards. It provides “recipes” of simple, easily implemented, and inexpensive troubleshooting tools or aids that can be built by the engineer or the technician.
Instructor Rick Lyons posted his list of free DSP books that are available for downloading in electronic format. The list is posted as an entry on his blog at DSPRelated.com.
Over forty books are listed and categorized by application.
Instructor Earl McCune has written a new book on envelope tracking for power amplifiers. Look for him to teach a course on the topic with Besser Associates as well.
Wireless voice and data communications have made great improvements, with connectivity now virtually ubiquitous. Users are demanding essentially perfect transmission and reception of voice and data. The infrastructure that supports this wide connectivity and nearly error-free delivery of information is complex, costly, and continually being improved.
Tim Wescott has joined Besser Associates with a new course on Applied Embedded Control Systems.
Christopher Baker has joined Besser Associates with his new course on Modern Radar Systems.
QUCS is a freeware circuit simulator that supports S-parameter analysis, among other types. It is available for Windows, Linux and OSX operating systems, with varying levels of support from the community.