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Acar, M. and Annema, A.-J. and Nauta, B.
(2007)
Analytical design equations for Class-E power amplifiers with finite DC-Feed inductance and switch on-resistance.
In: The IEEE International Symposium on Circuits and Systems (ISCAS)-2007., 27-30 May 2007, New Orleans.
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IEEE Press.
ISBN 1-4244-0921-7
Full text available as: Official URL: http://dx.doi.org/10.1109/ISCAS.2007.378758  AbstractAbstract—Many critical design trade-offs of the Class-E power
amplifier (e.g power efficiency) are influenced by the switch onresistance
and the value of dc-feed drain inductance. In literature,
the time-domain mathematical analyses of the Class-E power
amplifier with finite dc-feed inductance assume zero switch onresistance
in order to alleviate the mathematical difficulties;
resulting in non-optimum designs.
We present analytical design equations in this paper for
Class-E power amplifier taking into account both finite drain
inductance and switch on-resistance. The analysis indicates the
existence of infinitely many design equations; conclusions include:
1) Class-E conditions (e.g. zero voltage and zero slope) can be
satisfied in the presence of switch-on resistance.
2) The drain-efficiency (η) of the Class-E power amplifier is
upper limited for a certain operation frequency and transistor
technology.
3) Using a finite dc-feed inductance instead of an RF-choke in
a Class-E power amplifier can increase η by ≈ 30%. | Item Type: | Conference or Workshop Paper (Full Paper, Talk) |
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| Research Group: | EWI-ICD: Integrated Circuit Design |
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| Research Program: | CTIT-WiSe: Wireless and Sensor Systems |
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| Research Project: | Reliable RF: Robust RF Power-Drivers in low-voltage CMOS technology |
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| ID Code: | 9991 |
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| Status: | Published |
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| Deposited On: | 27 November 2007 |
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| Refereed: | Yes |
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| International: | Yes |
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| More Information: | statisticsmetis |
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