Simulation of a wideband frequency synthesizer
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Abstract
Low-noise frequency synthesizers are used in the main and zone radio relay broadband lines (TV, multichannel telephony), panoramic receivers and spectrum analyzers, measurement devices, as well as in any other systems that require fast and accurate switching in a wide frequency range [1]. The cardinal problem of design and construction of frequency synthesizer is the inevitable output noise rise when widening the frequency range. Existing solutions include increasing Q of the VCO, reference oscillator, precise PLL calculation, or using multiple VCO's for different frequency sub-ranges. The goal of the research is a widening of the PLL synthesizers frequency range that will be able to employ the sequential mode of functioning for radio communications, diagnostics and control systems
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References
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