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A parallel circuit differential class-E power amplifier using series capacitance
NED University of Engn and Technology, Pakistan .
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
NED University of Engn and Technology, Pakistan .
2013 (English)In: Analog Integrated Circuits and Signal Processing, ISSN 0925-1030, E-ISSN 1573-1979, Vol. 75, no 1, 31-40 p.Article in journal (Refereed) Published
Abstract [en]

Class-E amplifiers are attractive for wireless handsets because of their high efficiency and simple implementation. However, it requires inductors in its output matching network that are inherently low Q components affecting efficiency and may require significantly large area in fully integrated implementation. In this paper a novel approach of implementing parallel circuit differential class-E amplifier is presented. Instead of using an inductor parallel to the transistor drain of each amplifier, a single capacitor at the single ended side of the balun provides the parallel inductance effect to the switching transistors. As a result, number of inductors required for circuit implementation is reduced which means reduced losses, less area and better tuning of reactance can be achieved. A test circuit is implemented in 0.13 mu m CMOS process. Measurement results verify the validity of the concept. The Power Amplifier achieves 22 dBm output power at 2.4 GHz from a 2.5 V with an overall Power Added Efficiency of 38 %.

Place, publisher, year, edition, pages
Springer Verlag (Germany) , 2013. Vol. 75, no 1, 31-40 p.
Keyword [en]
Power amplifier, Parallel circuit, Class-E, Lattice L-C balun
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-90745DOI: 10.1007/s10470-013-0036-8ISI: 000316016100003OAI: oai:DiVA.org:liu-90745DiVA: diva2:614708
Available from: 2013-04-05 Created: 2013-04-05 Last updated: 2017-12-06

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Fritzin, JonasAlvandpour, Atila

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  • Other style
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  • de-DE
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  • en-US
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  • nn-NB
  • sv-SE
  • Other locale
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