Abstract
The paper describes a secret data transmission method using high-frequency techniques. The data security system consists of two inter-related parts. One deals with the encryption of binary data using the RSA algorithm on software platform. The other introduces an innovative conception of implementing encrypted FSK signal generation simulated with microwave techniques & technologies. Here, it requires the simultaneous generation of a pair of two independent high-frequency signals with the help of reflex klystron. In this scheme, the high-frequency generator is biased by the repeller voltage and superimposed on a series of RSA encrypted binary data. So the system creates two high frequencies, one representative to the positive and the other one to the negative portion of the data referring in an FSK signal. The new concept has been also verified with the help of simulation and experiment.
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