HF Transceiver H-Mode Mixer Module
In
this blog post, I present details of my high performance H-Mode RF Mixer stage.
The H-Mode RF Mixer is a high performance circuit and a module for my homebrew ham radio transceiver that I call the "Irwell".
The H-Mode mixer was designed by Colin Horrabin G3SBI with subsequent revisions published by Giancarlo Moda I7SWX and Martein Bakker PA3AKE. Full credit is acknowledged to Colin, Giancarlo & Martein for their extensive work and research on the H-Mode mixer.
The H-Mode mixer gets its name from the letter "H" depicted in the transformer configuration, which resembles an "H".
During my research of the H-Mode mixer, I came across an interesting article by Bob Burns G3OOU, who used three individual NC7SZ04 TinyLogic high-speed inverters in the squarer, noting that the devices improved the VHF response and reduced power consumption above 50MHz
