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2.4 GHz Power Amplifier with Cartesian Feedback for WLAN
Linköping University, Department of Electrical Engineering.
2002 (English)Independent thesis Basic level (professional degree)Student thesisAlternative title
2.4 GHz Effektförstärkare med Cartesisk återkoppling för WLAN (Swedish)
Abstract [en]

This final year project describes the linearisation method Cartesian feedback and the design of such a feedback with a 2.4GHz power amplifier.

To investigate the functionality of the Cartesian feedback ideal blocks with no current consumption were made and then gradually analog circuits were introduced into the feedback. The Cartesian feedback design consists of a subtracter, a modulator and a preamplifier in the top path and a demodulator and a filter in the feedback path. The blocks that are discussed in this report are the subtracter and the modulator unit. The circuits are designed in a 0.35µm SiGe BiCMOS technology.

The result of the Cartesian feedback showed an increase in 1dB compression point by 6.2dBm and the IMD was improved by 17dB.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2002.
LiTH-ISY-Ex, 3254
Keyword [en]
Electronics, Linearisation, Cartesian feedback, IMD, 1dBcompression point, PA, mixer, subtracter, adder, RF
Keyword [sv]
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:liu:diva-1360OAI: diva2:18683
Available from: 2002-10-21 Created: 2002-10-21

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