Signal frequency multiplication circuit and method and applicable device

Abstract

The invention provides a signal frequency multiplication circuit and method and an applicable device, wherein the signal frequency multiplication circuit comprises a signal input end and further comprises a frequency determination control unit connected with the signal input end, a digital frequency multiplication unit, an analog phase-locked loop and a frequency divider, wherein the frequency determination control unit comprises a determination input end, a first gating end, a second gating end, a third gating end, a fourth gating end, a first output end and a second output end, wherein the determination input end is connected with the first gating end and the signal input end, signal received by the first gating end and the second gating end are output from the first output end, and signals received by the third gating end and the fourth gating end are output from the second output end; the digital frequency multiplication unit is connected with the signal input end and the second gating end; the analog phase-locked loop is connected with the first output end and the second output end, and an output end of the analog phase-locked loop is further connected with the fourth gating end; and the frequency is connected with the output end of the analog phase-locked loop and the third gating end. The signal frequency multiplication circuit solves the problems that an analog frequency multiplier consumes a very long time to carry out frequency multiplication processing on low-frequency signals, and harmonic wave leakage are liable to happen when a digital frequency multiplier carries out frequency multiplication processing on high-frequency signals.

Description

technical field [0001] The invention relates to a signal frequency multiplication technology, in particular to a signal frequency multiplication circuit, method and applicable equipment. Background technique [0002] Signal frequency multiplication technology is mainly used in harmonic measurement, and its technical field involves power quality, frequency converter, engine, switching power supply, and new energy fields. For example, after the transmitter adopts a frequency multiplier, the main oscillator can oscillate at a lower frequency to improve frequency stability. FM equipment uses a frequency multiplier to increase the frequency offset. In the phase keying communication machine, the frequency multiplier is an important component of the carrier recovery circuit. Stable, low harmonic leakage frequency multipliers can improve the operating quality of the equipment in which they are installed. [0003] At present, there are mainly two types of frequency multipliers: an...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a signal frequency multiplication circuit, method and applicable equipment, which are used to solve the problem that the processing of signal frequency multiplication within a large frequency range in the prior art cannot meet high precision. asked questions

Images