2009•Telecommunication EngineeringRequires access

Development of a 3～16GHz Wide Frequency-Coverage Synthesizer

Huan Min

Abstract

A method to realize a wide frequency-coverage frequency synthesizer with low spurious level and low phase noise level is proposed in this paper.A 3～16GHz wide frequency-coverage frequency synthesizer with a mode of dual-PLL-switching is implemented by the proposed method. Although the frequency synthesizer is designed in a simple way,it obtained the good performance:when the frequency step is 20MHz,the phase noise level is less than -83dBc/Hz@10kHz,the spurious level is below -60dBc and the output power is above 10dBm.This method provides an optimal solution to the design of high-performance frequency synthesizers with ultra-wide frequency-coverage and fine frequency step.

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Key concepts: Frequency synthesizer, Spurious relationship, Direct digital synthesizer, Phase-locked loop, Phase noise, Electronic engineering, Computer science, Noise (video)