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A Novel Technique of Harmonic Rejection of the Sequential Type PLL Phase Detector and Its Application to Single-Loop Frequency Synthesis
S. K. SEN S. SARKAR P. K. GUPTA
IEICE TRANSACTIONS on Electronics
Publication Date: 1996/10/25
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwave and Millimeter Wave Technology
phaselock loop, phase detectors, synthesizer,
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This letter demonstrates that, under certain condition, the harmonic content of a rectangular pulse train is reduced by a considerable extent in the presence of another equal frequency pulse train of opposite polarity. The condition for maximum harmonic rejection is derived. It is also shown that this technique can, very effectively, be applied to reduce the harmonic content of a sequential phase detector (PD) output. This letter also presents the experimental performance of a sequential PD, incorporating this technique, in a single-loop synthesizer.