Description
Class H03D : DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
Subclass 1/20: Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear elements having more than two poles (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) with provision for preventing undesired type of demodulation, e.g. preventing anode detection in a grid detection circuit