Title :
A Period Modulated Carrier Technique for Data Recording
Author_Institution :
Defence Research Telecommunications Establishment Ottawa, Ontario, Canada
Abstract :
The data signal modulates the period of a carrier in a linear fashion to obtain the same benefits offered by FM tape recording. A discriminator for this type of modulation can have significantly less spurious output at the carrier and its second harmonic than pulse-counting FM discriminators. This may allow wider modulation bandwidth or simplify post-detection filtering. Digital techniques can be employed to yield a system with a very stable overall transfer function.
Keywords :
Amplitude modulation; Bandwidth; Demodulation; Filtering; Frequency modulation; Low pass filters; Magnetic separation; Power harmonic filters; Pulse modulation; Signal generators;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.1966.4501999
