RF Mentor Academy is available as a source of online training on RF and Wireless topics for users of RF Mentor. The site features some free webinars and study guides, but also online courses from Besser Associates. We will be using the site to offer some products in slightly different formats than what we offer on our main corporate site.
Besser Associates and Microwave Journal magazine have presented a free webcast on Mixers and Frequency Conversion. This one-hour webcast has been presented by instructor Allen Podell, and the recording is now available for viewing. Frequency conversion is a critical function in all wireless systems. A key component used to accomplish this is the mixer. Designers need to understand different mixer topologies and specifications in order to meet their system requirements.
I've done some updates to a couple of calculators on the site. The Animated Reflectometer HTML5 version had a bug where the animation would be drawn with the wrong sign for values entered into the load impedance (ZL) field. The displayed numerical results were correct, but the animation would demonstrate an open circuit condition if you entered zero impedance for the load, instead of displaying a shorted condition. This has been fixed now.
These courses focus on CDMA/OFDM fundamentals as well as the techniques that have been incorporated into 5G/4G LTE/Advanced specifications. Topics covered include 5G Wireless Networks, mm-Wave Antennas, Smartphone Architecture, and more.
In this practical tip from InCompliance magazine, instructor Arturo Mediano discusses the importance of using the actual load of your device rather than substituting and equivalent resistor when testing for EMI.