Content by Besser Associates instructors from around the web and right here on RFMentor.com.
Instructor John Wood has co-authored an article on the history of RF power amplifier linearization strategies. A membership in the IEEE MTT society is required for free access to the article.
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.
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.
Workbooks from part 1 of the RF Technology Certification program are being gathered here for your reference.
Workbooks contain a summary of formulas for each subject, exercises, suggestions for further reading, and a problem set/quiz. Workbooks posted here are the newest revision being used in the current offering of the program.
Access is restricted to registered users who have completed the certification program.
Workbooks for this part:
•Wave Parameters
•dB and dBm
•Complex Numbers and Impedances
•Mismatch and Reflection
•Transmission Lines
Instructor Earl McCune's presentation from the 2014 IEEE MTT symposium in Phoenix, AZ is available for downloading from the IEEE website. This presentation looks at the problem of providing high efficiency and linearity from a power transistor at the same time.
On-demand courses are now available from Besser Associates. Tutorials and courses range from one to eight hours in length. Topics include:
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.
Instructor Waleed Khalil has co-published a couple of new papers that are freely accessible in the IEEE Access publication.
The first one is Phase Error Evaluation in a Two-Path Receiver Front-End With On-Site Coding:
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.
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.