High Frequency Electronics: January 2011

High Frequency Electronics - January 2011There are two articles in the January 2011 issue of High Frequency Electronics that amateur radio operators might find interesting:

  1. The Mathematics of Mixers: Basic Principles. This tutorial walks you through the basics of mixers. Because this article is aimed at engineers, there is math involved, but it’s not overly complicated, and if you stick with it, you’ll gain a better understanding of how the mixer, one of the most basic circuits in amateur radio, works.
  2. Design of Input Matching Networks for Class-E RF Power Amplifiers. The author of this article says, “Little attention is brought to the design of the input matching network and to the device bias conditions, with their effects on the overall circuit performance. This paper attempts to discuss these topics through a systematic design and simulation approach for a typical 5 watt class-E power amplifier operating at 150 MHz.”

Note that the magazine is only available as a single PDF file. To read these articles, you’ll have to download the PDF file first.


  1. great site keep up the good work 73 de matt m6ceb

  2. Elwood Downey says:

    Thanks for mentioning, it’s a great mag for hams and radio enthusiasts and it’s completely free. It’s possible to get HFE hard copy too, just fill out their subscription form at their web site: http://www.highfrequencyelectronics.com/ . There you can also download all previous issues, also for free. I usually find something of interest in each one, plus I enjoy reading the ads and reviews for the latest amazing devices and equipment.

  3. The editor of High Frequency Electronics is Gary Breed, K9AY. Gary is a very active ham, a great CW contester, developer of some very small directional lowband antennas bearing his callsign, and the proprieter of a company that sells accessories for those who are trying to build their own high-performance low-band receivnig arrays. He’s also a very nice fellow, and you can meet him most years at Dayton.

    Because of his long experience in ham radio, his magazines are the most likely to come up with a fairly decent article of interest to hams, as well as practicing engineers.


    Dave W8NF

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