<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Frequency synthesizers are indispensable systems in the wireless communications area. In fractional-N frequency synthesizers ΔΣ modulators allows performances like larger bandwidth, faster lock times, reduced output phase-noise, with the price of some circuitry complexity. These specifications and others are based on the modulation accuracy. The main problem in ΔΣ fractional-N synthesizers is the specific quantization noise of the ΔΣ modulator and the solutions try to suppress it. MASH (Multi-stAge noise SHapping) digital ΔΣ modulator are also performance stages used in fractional-N frequency synthesizers. This paper will present solutions for ΔΣ modulators and their implementation.</p></abstract>

Frequency synthesizers are indispensable systems in the wireless communications area. In fractional-N frequency synthesizers ΔΣ modulators allows performances like larger bandwidth, faster lock times, reduced output phase-noise, with the price of some circuitry complexity. These specifications and others are based on the modulation accuracy. The main problem in ΔΣ fractional-N synthesizers is the specific quantization noise of the ΔΣ modulator and the solutions try to suppress it. MASH (Multi-stAge noise SHapping) digital ΔΣ modulator are also performance stages used in fractional-N frequency synthesizers. This paper will present solutions for ΔΣ modulators and their implementation.

Δ-Σ Modulators in Frequency Synthsizers

“Nicolae Bălcescu” Land Forces Academy, Sibiu, Romania

International conference KNOWLEDGE-BASED ORGANIZATION

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Δ-Σ Modulators in Frequency Synthsizers"}

Frequency synthesizers are indispensable systems in the wireless communications area. In fractional-N frequency synthesizers ΔΣ modulators allows performances...

Δ-Σ Modulators in Frequency Synthsizers

Published Online: Jul 27, 2016

Page range: 576 - 579

DOI: https://doi.org/10.1515/kbo-2016-0099

Keywords
frequency synthesizers, ΣΔ modulator, MASH, quantization error, phase-noise

© 2015 Emil Teodoru, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Δ-Σ Modulators in Frequency Synthsizers

Published Online: Jul 27, 2016

Page range: 576 - 579

DOI: https://doi.org/10.1515/kbo-2016-0099

Keywordsfrequency synthesizers, ΣΔ modulator, MASH, quantization error, phase-noise

© 2015 Emil Teodoru, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
frequency synthesizers, ΣΔ modulator, MASH, quantization error, phase-noise