The Canon RF 50mm f/1.2L USM is an amazingly fast, amazingly expensive 50mm prime lens for the new Canon EOS R full frame mirrorless camera system. Read our in-depth Canon RF 50mm f/1.2L USM review to ...

Envelope tracking (ET) power amplifiers and supply modulators represent a pivotal advance in modern radio frequency (RF) design, particularly for wireless communications. These systems dynamically ...