Time and Phase Jitter, Heterodyning, and Multiplication
Daniel B. Talbot · 2012
By heterodyning, means the translation of a signal at frequency A to a new frequency B. The approach involves an RF mixer (akin to a multiplier) and a local oscillator. In some cases, two or more applications of heterodyning may be required to obtain the final result without spurs. This chapter reviews the principles of heterodyning. If the modulated signal had been applied to a frequency multiplier, the phase or frequency modulation index β would increase by the multiplication factor. A frequency multiplier is highly attractive as a device for recovering a carrier from a suppressed carrier digital modulation signal. Controlled Vocabulary Terms Digital modulation; jitter; phase modulation; Radio frequency