Proceedings ArticleDOI
A multiple modulator fractional divider
B. Miller,B. Conley +1 more
- pp 559-568
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TLDR
In this article, a CMOS integrated fractional-N divider is presented, which allows the spectrum of error energy to be shaped so that fractional synthesis error energy is pushed away from the carrier.Abstract:
Based on oversampling A/D conversion technology which allows the spectrum of error energy to be shaped so that fractional synthesis error energy is pushed away from the carrier, a CMOS integrated fractional-N divider is presented. A complete fractional-N phase locked loop (PLL) which was constructed utilizing only the CMOS divider, a dual modulus prescaler, a simple loop filter, and a voltage controlled oscillator is discussed. The resulting PLL is shown to exhibit no fractional spurs. >read more
Citations
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Proceedings ArticleDOI
A generalized MASH architecture in fractional-N synthesizer
TL;DR: A new optimized algorithm is developed; base on this general algorithm MASH modulator with arbitrary high order can be implemented with more flexibility and less hardware effort.
Journal ArticleDOI
Evolutional Trend of Mixed Analog and Digital RF Circuits
TL;DR: Those integration techniques for receiver and transmitter in these 20 years are reviewed and a typical example of digital assisted systems, synthesizer based transmitters are discussed in detail.
Journal ArticleDOI
A Programmable 25-MHz to 6-GHz $K/L$ Frequency Multiplier With Digital $K_{\rm vco}$ Compensation
TL;DR: In this article, a programmable rational-K/L frequency multiplier that can synthesize any frequency between 25 MHz and 6 GHz from an input clock ranging from 1 to 5 GHz is presented.
Implementation ofSigmaDelta Modulator for Fractional-N frequency Synthesis
TL;DR: This paper presents the implementation of all-digital first-order multi-stage sigma-delta modulator for fractional-N phase-locked loop frequency synthesis applications.
References
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Journal ArticleDOI
A Use of Double Integration in Sigma Delta Modulation
TL;DR: A modulator that employs double integration and two-level quantization is easy to implement and is tolerant of parameter variation.
Journal ArticleDOI
A 16-bit oversampling A-to-D conversion technology using triple-integration noise shaping
TL;DR: A highly stable triple-integration noise-shaping technology which permits greater accuracy for monolithic audio A/D converters is discussed and a 16-bit 24-kHz bandwidth A-D converter LSI with digital filters was successfully fabricated in 2-/spl mu/m CMOS technology.
Journal ArticleDOI
Oversampled Sigma-Delta Modulation
TL;DR: This paper rigorously derive several basic properties of a simple discrete-time single integrator loop sigma-delta modulator with an accumulate-and-dump demodulator and shows that when the input is constant, the state sequence of the integrator in the encoder loop can be modeled exactly as a linear system in an appropriate space.
Book
Frequency synthesis by phase lock
TL;DR: The Elementary Phase-Locked Synthesizer, Modulation, Sidebands and Noise Spectrums, and its Applications: Large-Signal Performance, Natural Acquisition.
Book ChapterDOI
The Structure of Quantization Noise from Sigma-Delta Modulation
James C. Candy,O. Benjamin +1 more
TL;DR: Simple algebraic expressions for this modulation noise and its spectrum in terms of the input amplitude are derived and can be useful for designing oversampled analog to digital converters that use sigma-delta modulation for the primary conversion.