Contents
How can you multiply the input frequency by N using PLL?
PLL Applications The desired amount of multiplication can be obtained by selecting a proper divide- by N network where N is an integer. Figure shows this function performed by a 7490 configured as a divide-by-4 circuit. In this case the input Vin at frequency /in is compared with the output frequency fOUT at pin 5.
What is the function of frequency multiplier?
Frequency multipliers consist of a nonlinear circuit that distorts the input signal and consequently generates harmonics of the input signal. A subsequent bandpass filter selects the desired harmonic frequency and removes the unwanted fundamental and other harmonics from the output.
What is a frequency multiplier circuit?
In electronics, a frequency multiplier is an electronic circuit that generates an output signal and that output frequency is a harmonic (multiple) of its input frequency. Frequency multipliers consist of a nonlinear circuit that distorts the input signal and consequently generates harmonics of the input signal.
How is frequency multiplication used in real life?
It’s time, then, to discuss real-life PLL applications, and we’ll start with frequency multiplication, which is a natural and intuitive extension of a PLL’s ability to lock onto an input frequency. Why? It’s always good to know why you want to do something before you do it.
How is frequency multiplication used in a feedback loop?
After five articles that focused on the fundamental characteristics of phase-locked-loop systems, we have now introduced an extremely widespread practical application of the PLL. By adding a frequency divider into the feedback loop, we can multiply the frequency of an input signal while maintaining the input signal’s precision and stability.
When to use frequency Multipli-cation in microwave?
Frequency multipli- cation is commonly done in RF/Microwave equipment to generate high-stability, low- noise signals. How the frequency multiplication is implemented will affect the quality of the final frequency (i.e. phase noise/jitter).
How are frequency multipliers used to generate high frequency signal?
Frequency Multipliers – Another alternative method to generate high frequency signal power with low phase noise is to generate a high-quality lower frequency signal and employ a frequency multiplier to deliver the high frequency output at the desired frequency.