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Analysis and Compensation of the AM-AM and AM-PM Distortion for CMOS Cascode Class-E Power Amplifier
Joint Authors
Yang, Tzu Yi
Wen, Kuei Ann
Tsou, Wen An
Wuen, Wen Shen
Source
International Journal of Microwave Science and Technology
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-02-23
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Analysis and compensation methodology of the AM-AM and AM-PM distortion of cascode class-E power amplifiers are presented.
A physical-based model is proposed to illustrate that the nonlinear capacitance and transconductance cause the AM-AM and AM-PM distortion when modulating the supply voltage of the PA.
A novel methodology that can reduce the distortion is also proposed.
By degenerating common-gate transistor into a resistor, the constant equivalent impedance is obtained so that the AM-AM and AM-PM distortion is compensated.
An experimental prototype of 2.6 GHz cascode class-E power amplifier with the AM-AM and AM-PM compensation has been integrated in a 0.18 μm CMOS technology, occupies a total die area of 1.6 mm2.
It achieves a drain efficiency of 17.8% and a power-added efficiency of 16.6% while delivering 12 dBm of linear output power and drawing 31 mA from a 1.8 V supply.
Finally, a co-simulation result demonstrated that, when the distortion of the PA has been compensated, the EVM is improved from −17 dB to −19 dB with an IEEE802.11a-like signal source.
American Psychological Association (APA)
Tsou, Wen An& Wuen, Wen Shen& Yang, Tzu Yi& Wen, Kuei Ann. 2010. Analysis and Compensation of the AM-AM and AM-PM Distortion for CMOS Cascode Class-E Power Amplifier. International Journal of Microwave Science and Technology،Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-483920
Modern Language Association (MLA)
Tsou, Wen An…[et al.]. Analysis and Compensation of the AM-AM and AM-PM Distortion for CMOS Cascode Class-E Power Amplifier. International Journal of Microwave Science and Technology No. 2009 (2009), pp.1-9.
https://search.emarefa.net/detail/BIM-483920
American Medical Association (AMA)
Tsou, Wen An& Wuen, Wen Shen& Yang, Tzu Yi& Wen, Kuei Ann. Analysis and Compensation of the AM-AM and AM-PM Distortion for CMOS Cascode Class-E Power Amplifier. International Journal of Microwave Science and Technology. 2010. Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-483920
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-483920