hig.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Automated multidimensional characterization of power amplifier for design and production
University of Gävle, Center for RF Measurement Technologies.
University of Gävle, Center for RF Measurement Technologies.
Ericsson AB.
University of Gävle, Center for RF Measurement Technologies.ORCID iD: 0000-0001-5429-7223
Show others and affiliations
2009 (English)In: 2009 IEEE Instrumentation and Measurement Technology Conference Proceedings, Singapore: I&M Society , 2009, p. 144-148Conference paper, Published paper (Refereed)
Abstract [en]

Designing, optimizing and producing modern power amplifiers (PA) requires new and fast RF (radio frequency) measurement techniques capable of characterizing its real behavior. Power amplifiers are a truly multidimensional device where many desired performance parameters are contradictory to each other. This is especially true for the generation of modern communication PAs that require high efficiency, high linearity as well as high bandwidth. This paper presents a software-defined measurement setup for fast and cost efficient multidimensional measurements based on highly accurate standard instruments and a PC. The test bed as well as the graphical user interface is presented along with a demonstration of its functionality. During tuning of tank networks, drain quiescent current, and bias conditions, 3-dimensional graphs can be selected for the most appropriate axes of trade-off parameters to display a true behavior of the PA under test subjected to real-world or close to real-world signals. The measurement system offers the possibility to monitor envelope-tracking dynamic power consumption up to 100 MHz plus the possibility to use high crest factors.

Place, publisher, year, edition, pages
Singapore: I&M Society , 2009. p. 144-148
Keywords [en]
Automated multidimensional measurements, power amplifier, time domain measurement, state-of-the-art test-bed, gain-distortion-efficiency
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hig:diva-5486DOI: 10.1109/IMTC.2009.5168432ISI: 000277153600027ISBN: 978-1-4244-3352-0 (print)OAI: oai:DiVA.org:hig-5486DiVA, id: diva2:236395
Conference
26th IEEE International Instrumentation and Measurement Technology Conference, Singapore, 5-7 May 2009
Projects
KKS DSMAvailable from: 2009-09-26 Created: 2009-09-22 Last updated: 2018-03-13Bibliographically approved
In thesis
1. Enhancing Radio Frequency System Performance by Digital Signal Processing
Open this publication in new window or tab >>Enhancing Radio Frequency System Performance by Digital Signal Processing
2010 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis measurement systems for the purpose of characterization of radio frequency power amplifiers are studied. Methods to increase the speed, accuracy, bandwidth, as well as to reduce the sampling requirements and testing cost are presented. A method intended for signal shaping with respect to peak to-average ratio reduction and its effects-improvements on the radio frequency front-end performance is investigated.

A time domain measurement system intended for fast and accurate measurements and characterization of radio frequency power amplifiers is discussed. An automated, fast and accurate technique for power and frequency sweep measurements is presented. Multidimensional representation of measured figure of merits is evaluated for its importance on the production-testing phase of power amplifiers.

A technique to extend the digital bandwidth of a measurement system is discussed. It is based on the Zhu-Frank generalized sampling theorem which decreases the requirements on the sampling rate of the measurement system. Its application for power amplifiers behavioral modeling is discussed and evaluated experimentally.

A general method for designing multitone for the purpose of out-of-band characterization of nonlinear radio frequency modules using harmonic sampling is presented. It has an application with the validation of power amplifiers behavioral models in their out-of-band frequency spectral support when extracted from undersampled data.

A method for unfolding the frequency spectrum of undersampled wideband signals is presented. It is of high relevance to state-of-the-art radio frequency measurement systems which capture repetitive waveform based on a sampling rate that violates the Nyquist constraint. The method is presented in a compact form, it eliminates ambiguities caused by folded frequency spectra standing outside the Nyquist band, and is relevant for calibration matters.

A convex optimization reduction-based method of peaks-to-average ratio of orthogonal frequency division multiplexing signals is presented and experimentally validated for a wireless local area network system. Improvements on the radio frequency power amplifier level are investigated with respect to power added efficiency, output power, in-band and out-of-band errors. The influence of the power distribution in the excitation signal on power amplifier performance was evaluated.

Place, publisher, year, edition, pages
Stockholm: Skolan för elektro- och systemteknik, Kungliga Tekniska högskolan, 2010. p. 90
Series
TRITA-EE 2010:030, ISSN 1653-5146
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:hig:diva-7312 (URN)
Presentation
2010-08-20, Hörsal 99131, Kungsbäcksvägen 47, Gävle, 10:00 (English)
Opponent
Supervisors
Available from: 2010-08-18 Created: 2010-08-09 Last updated: 2018-03-13Bibliographically approved

Open Access in DiVA

fulltext(350 kB)558 downloads
File information
File name FULLTEXT01.pdfFile size 350 kBChecksum SHA-512
6e7f8781ac56e2c2afd52af2af3edd9b4ba2850140c087d9f01242837c68fa90e30de160028615120e951f337a2b4da44f5d19fcf73369416086f997169a4d66
Type fulltextMimetype application/pdf

Other links

Publisher's full texthttp://www.ieeexplore.ieee.org/xpl/freeabs_all.jsp?tp=&arnumber=5168432&isnumber=5168393

Authority records BETA

Nader, CharlesBjörsell, NiclasKeskitalo, Niclas

Search in DiVA

By author/editor
Nader, CharlesBjörsell, NiclasKeskitalo, Niclas
By organisation
Center for RF Measurement Technologies
Other Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 558 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 1230 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf