Polyakov MOSFET mixer
This translated article fro 1983:
http://zpostbox.ru/rf_mixer_for_direct_conversion_receivers.html
refers to this Polyakov article in April 1983 Radio, pages 19 & 20:
And an interesting footnote to the article is this US patent :
https://patents.google.com/patent/US3383601
from the famous radio designer, William K. Squires of Squires-Sanders. Here is an interesting page on Squires-Sanders:
http://www.radiopharos.it/SQUIRES-SANDERS,%20INC._n.p._4.htm
I definitely have to try this circuit though.
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm