This interactive web page allows you to look at the output waveforms from a switching-type mixer, as well as a pure multiplication. You can change the RF and LO frequencies and update the graph.

This demo is included in the Online RF Technology Certification program from Besser Associates.

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.

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.