Comparison of Class C and High Efficiency Class E Amplifiers at 435 MHz

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F19%3APU132079" target="_blank" >RIV/00216305:26220/19:PU132079 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/8733545" target="_blank" >https://ieeexplore.ieee.org/document/8733545</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/RADIOELEK.2019.8733545" target="_blank" >10.1109/RADIOELEK.2019.8733545</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Class C and High Efficiency Class E Amplifiers at 435 MHz

Popis výsledku v původním jazyce

This article deals with the comparison of class C and class E amplifiers designed with an identical transistor, substrate, and frequency. Both types of amplifiers have a theoretical efficiency of 100 %; however, more attention is paid to class E amplifier, because of its complexity and difficulty of design. The efficiency of both classes reached over 75 %. The working frequency of designed amplifiers was 435 MHz using lumped components. The topology of the class C amplifier is typical with input and output filter matching at the fundamental frequency, and the design of the class E amplifier is with shunt capacitance complemented with series resonant circuit fundamentally tuned. Class E amplifier with a shunt capacitance designed with E-pHEMT transistor is unique, because of small drain voltage which has a distinct influence on switching capacitor value which resulted in hundredths to units of picofarads. The amplifiers were simulated, manufactured and measured results were compared. The class E amplifier is therefore presented at such frequency where transmission lines cannot be used because of their length and even the lumped resonators tuned to higher harmonics frequency start to be undesignable.

Název v anglickém jazyce

Comparison of Class C and High Efficiency Class E Amplifiers at 435 MHz

Popis výsledku anglicky

This article deals with the comparison of class C and class E amplifiers designed with an identical transistor, substrate, and frequency. Both types of amplifiers have a theoretical efficiency of 100 %; however, more attention is paid to class E amplifier, because of its complexity and difficulty of design. The efficiency of both classes reached over 75 %. The working frequency of designed amplifiers was 435 MHz using lumped components. The topology of the class C amplifier is typical with input and output filter matching at the fundamental frequency, and the design of the class E amplifier is with shunt capacitance complemented with series resonant circuit fundamentally tuned. Class E amplifier with a shunt capacitance designed with E-pHEMT transistor is unique, because of small drain voltage which has a distinct influence on switching capacitor value which resulted in hundredths to units of picofarads. The amplifiers were simulated, manufactured and measured results were compared. The class E amplifier is therefore presented at such frequency where transmission lines cannot be used because of their length and even the lumped resonators tuned to higher harmonics frequency start to be undesignable.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/LO1401" target="_blank" >LO1401: Interdisciplinární výzkum bezdrátových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 29th International Conference Radioelektronika 2019

ISBN

978-1-5386-9321-6

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

95-98

Název nakladatele

Neuveden

Místo vydání

Pardubice, Czech Republic

Místo konání akce

Pardubice

Datum konání akce

16. 4. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000492026100015