All Digital FPGA Based PWM Modulator for Radio Frequency Transmitters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F15%3A00231407" target="_blank" >RIV/68407700:21230/15:00231407 - isvavai.cz</a>

Výsledek na webu

<a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7129022" target="_blank" >http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7129022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/RADIOELEK.2015.7129022" target="_blank" >10.1109/RADIOELEK.2015.7129022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

All Digital FPGA Based PWM Modulator for Radio Frequency Transmitters

Popis výsledku v původním jazyce

A complete all digital pulse width modulation (PWM) modulator for AM or DRM (using Kahn envelope elimination and restoration technique) radio transmitter has been developed, implemented in FPGA, and measured. The modulating process strictly uses digitalsignal processing and only a switched MOSFET power stage followed by a low-pass LC filter, which compose a source of an ``envelope'' supply voltage for a switching power stage of radio transmitter. The advantages of fully digital signal processing bringthe possibility to simply implement the dynamic configuration and signal correction. However, the digital naturally sampled PWM implementation puts not only high demands on the discrete time resolution, but, consequently, it requires exceptional accuracyof interpolating algorithm not to cause unacceptable signal distortion within the modulator. Effect of the both phenomena, the time resolution and the interpolation accuracy, has been studied. The results are compared with the measuremen

Název v anglickém jazyce

All Digital FPGA Based PWM Modulator for Radio Frequency Transmitters

Popis výsledku anglicky

A complete all digital pulse width modulation (PWM) modulator for AM or DRM (using Kahn envelope elimination and restoration technique) radio transmitter has been developed, implemented in FPGA, and measured. The modulating process strictly uses digitalsignal processing and only a switched MOSFET power stage followed by a low-pass LC filter, which compose a source of an ``envelope'' supply voltage for a switching power stage of radio transmitter. The advantages of fully digital signal processing bringthe possibility to simply implement the dynamic configuration and signal correction. However, the digital naturally sampled PWM implementation puts not only high demands on the discrete time resolution, but, consequently, it requires exceptional accuracyof interpolating algorithm not to cause unacceptable signal distortion within the modulator. Effect of the both phenomena, the time resolution and the interpolation accuracy, has been studied. The results are compared with the measuremen

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of 25th International Conference RADIOELEKTRONIKA 2015

ISBN

978-1-4799-8117-5

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

244-247

Název nakladatele

University of Pardubice

Místo vydání

Pardubice

Místo konání akce

Pardubice

Datum konání akce

21. 4. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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