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Content by Besser Associates instructors from around the web and right here on RFMentor.com.

Reducing VHF Radiated EMI with an RC Snubber

Author: 

Arturo Mediano

Instructor Arturo Mediano has published an article with In Compliance magazine on reducing VHF EMI from a flyback power supply.

Usually, EMC design guidelines in flyback literature are related with the switching effects of the output transistor to minimize emissions for conducted tests in the 9 kHz to 30 MHz range. But failure in radiated emissions in the VHF range is typical when testing the product for EMC compliance.

Foundations of Green Communications

Author: 

Earl McCune

Until now, the focus in developing wireless communications formats has been almost exclusively on using novel techniques to overcome specific channel impairments (i.e. multipath, selective fading, etc). What has been missing is an assessment of the overall energy efficiency of the final hardware that is to be deployed. This paper introduces this type of analysis.

Live and On-Demand RF/Wireless Courses from Besser Associates

Author: 

Besser Associates

On-demand courses are now available from Besser Associates. Tutorials and courses range from one to eight hours in length. Topics include:

  • GaN Power Amplifiers
  • EMC/Shielding/Grounding Techniques for Chip & PCB Layout
  • Introduction to Radio Receivers
  • RF Technology Certification
  • Introduction to Impedance Matching
  • RF and Wireless Made Simple On-demand

New Article on Electrically Small Antennas from Steve Best

Submitted by rfrobenius on

Instructor Steve Best has a new article in the recent issue of IEEE Antennas and Propagation magazine titled, Electrically Small Resonant Planar Antennas: Optimizing the Quality Factor and Bandwidth. You must be a member of the IEEE Antennas and Propagation society for free access to the article.

Subject Area: 

New Papers from Ali Darwish

Submitted by rfrobenius on

Instructor Ali Darwish has co-authored a couple of new papers recently. The most recent one, A Broadband 1-to- N Power Divider/Combiner With Isolation and Reflection Cancellation appears in the IEEE MTT Transactions. You must be a member of the IEEE Microwave Theory and Techniques society to get free access.

Subject Area: 

Rick Lyons on Using the Forward FFT Algorithm to Compute the IFFT

Submitted by rfrobenius on

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.

Subject Area: 

New Post Regarding Goertzel Filters from Rick Lyons on DSPRelated

Submitted by rfrobenius on

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."

Subject Area: 

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