Dynamically configurable self-reconstructable wide frequency mixer

Abstract

The invention discloses a dynamic configured self-reconstructing broadband frequency synthesizer, comprising a low frequency synthesizer, a mixing synthesizer, a high frequency synthesizer, an output selecting switch and a parameter configuring re-constructing controller. The parameter configuring re-constructing controller provides binary parameter configuring signal to other each part; the low frequency synthesizer generates low output frequency with small modulation step length as reference frequency of the mixing synthesizer; the high frequency synthesizer generates high frequency output frequency with large modulation step length as input signal of the mixing synthesizer; the mixing synthesizer mixes the frequencies output by the low frequency synthesizer and the high frequency synthesizer to synthesize an output clock signal with wider frequency band, high resolution and quick converting speed. The output selecting switch selects three-path output frequency to output according to requirement of the frequency selecting signal. The output frequency of the invention has small modulation step length, wide frequency band covered, quick converting speed and excellent expandability, which is capable of altering output frequency agilely according to requirement of application environment.

Description

technical field [0001] The invention belongs to the field of radio frequency integrated circuits, in particular to a dynamically configurable self-reconfigurable wideband frequency synthesizer. Background technique [0002] At present, the development speed of wireless communication system is very fast, and it is also more and more used in the fields of medical communication and electronic equipment communication. With the development of the integrated circuit industry, the design of system integrated communication chips has gradually become possible and corresponding products have appeared. Frequency synthesis technology is one of the key technologies for communication electronic systems to achieve high performance indicators. The function realization of many modern electronic devices and systems directly depends on the performance of the frequency synthesizer used, so the frequency synthesizer is regarded as the "keystone" of many electronic systems. heart". Frequency sy...

AI Technical Summary

Problems solved by technology

[0005] [1] The usual frequency synthesizer cannot achieve a wide output frequency band and high stability at the same time

[0006] [2] It is difficult to guarantee a small modulation step size when the frequency synthesizer achieves high modulation resolution and small lock time

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