Apologies to all of our friends at Mini-Circuits for the omission of the company name from the front cover, as well as from the first figure of the Cover Feature article. Although the company name was not on the front cover, it did appear within the article beginning on p. 92 of the January 2012 issue. And to RF/microwave engineers, the name ??Mini-Circuits? has long been associated with frequency mixers, representing a company that has been innovative in the development of high-performance, high-quality mixers for affordable prices??among them, the new hermetic MAC series mixers.