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http://dx.doi.org/10.7471/ikeee.2013.17.3.248

Architecture and Noise Analysis of Frequency Discriminators  

Park, Sungkyung (Dept. of Electronics Engineering, Pusan National University)
Publication Information
Journal of IKEEE / v.17, no.3, 2013 , pp. 248-253 More about this Journal
Abstract
Frequency detector is a circuit that converts the frequency to a digital representation and finds its application in various fields such as modulator and synchronization circuitry. In this paper, a couple of first-order and second-order frequency discriminator structures are modeled and analyzed with their quantization noise sources. Also a delta-sigma frequency detector architecture is proposed. Through theoretical analysis and derived equations, the output noise is obtained, which is validated by simulation. The proposed all-digital frequency discriminator may be applied in the feedback path of the all-digital phase-locked loop.
Keywords
Frequency discriminator; all-digital; delta-sigma; quantization; noise;
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