Review on Fractional-N Frequency Synthesizers


Authors : Dr. Suchitra M; Dr. Geethashree A; Panchami S V

Volume/Issue : Volume 6 - 2021, Issue 2 - February

Google Scholar : http://bitly.ws/9nMw

Scribd : https://bit.ly/3qkqIEy

Modern wireless transmission systems have increasing demands for frequency synthesizers. In this paper, a survey on designing an efficient Frequency synthesizer to suit a wide range of potential applications is researched. Various technologies existing currently and their parent technologies have been analyzed and the best results are extracted in the current research to suite a better design. In this review various parameters such as wide frequency coverage, fast switching speed, small step size and adequate spectral purity, low cost, compact size are analyzed. Even with the increasing demand for VLSI technology, a huge gap is identified in designing the synthesizers for PLL using VLSI technology.

Keywords : Frequency Dividers, Frequency Synthesizers, Phase Locked Loops, Prescaler, Software Defined Radio, Voltage Controlled Oscillators

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