by John K5PRO » Fri May 02, 2008 6:46 pm
This months (April 08) Microwave Journal trade magazine has an article by some Malaysian engineers working for Motorola, on a Broadband Class E Parallel Circuit VHF PA with High Harmonic Suppression. I think you can read it online at the magazine website. They built a 6.5 watt 70% efficient PA from 135-175 MHz with -73 dBc 2nd harmonic across the entire bandwidth.