Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F10%3APU88059" target="_blank" >RIV/00216305:26220/10:PU88059 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Modified Polar Sigma-Delta Transmitter for Multi-Radio Applications
Original language description
Abstract - radiotransmitters capable to transform variable envelope signals into constant envelope signals can be associated with high-efficiency switched-mode power amplifiers. One of the techniques providing this conversion is Polar Sigma-Delta architecture. This approach provides efficient solution for high-dynamic signals and moreover, it offers flexibility in a multi-radio environment. The overall concept of the polar transmitter is presented here along with novel modifications and improvements. Namely, when recombining the envelope and the phase signals, it is suggested to replace the analog mixing by a digital mixing. The impact of a frequency synthesizer with a switched loop bandwidth and its imperfections on the overall polar architecture is investigated as well. The Mobile WiMAX standard has been chosen for validation due to very high requirements in terms of power dynamics and the variable channel bandwidth. Simulation results are presented in this paper and advantages and d
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>R - Projekt Ramcoveho programu EK
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
EURASIP Journal on Wireless Communications and Networking
ISSN
1687-1499
e-ISSN
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Volume of the periodical
2010
Issue of the periodical within the volume
2010
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
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UT code for WoS article
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EID of the result in the Scopus database
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