METHOD OF TRANSMISSION AND DEVICE TO CARRY OUT SAID METHOD

摘要

The method involves modulating a signal input to a transmitter or write unit for transmission to a receiver or reader unit. The transmitter generates angle modulated pulses with successive opposed angular modulations during a pulse period superimposed to form a folding pulse on which information is superimposed by modulation or encoding. The received folding pulses is filtered in two or more dispersion filters connected in parallel pairs with frequency dependent group transmission time characteristics matched to the angular modulation of the pulses. The filters output a pair of combined signals consisting of a time compressed signal with increased amplitude and an extended signal with reduced amplitude which are fed to a second superimposition element. -