Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Studying Noise Contributions in Nonlinear Vector Network Analyzer (NVNA) Measurements
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Noise contribution in nonlinear systems is very different from that in linear systems. The noise effects in nonlinear systems can be complicated and not obvious to predict. In this thesis, the focus was on the noise contribution in nonlinear systems when measuring with the nonlinear vector network analyzer (NVNA). An additional noise source together with a single sinewave signal was fed into the input of the amplifier and the performance was studied. The input power of the amplifier is considered to be the sum of the noise power and the signal power. The variation of the 1 dB compression point and the third order interception point as functions of the added noise power were studied. From the measured results in this thesis, the 1 dB compression point referred to the output power will decrease when increasing the added noise power at the input of the amplifier. The contribution of the added noise to the 1 dB compression point of an amplifier is considered dual: with the added noise the linear regression lines of the AM/AM curves are changed, and due to hard clipping the useful output power is reduced. As a result of those two effects, the added noise made the compression start at a lower power level. When the added noise reaches a certain level, the 1 dB compression point is hard to measure.

Thus when performing nonlinear measurements, the noise effects should be taken into considerations and further studies are required to get better understanding of the system’s behavior in noisy environment.

Place, publisher, year, edition, pages
2012. , 65 p.
Keyword [en]
nonlinear measurements, nonlinear vector network analyzer (NVNA), power amplifier, nonlinear systems, noise contributions.
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:hig:diva-13119Archive number: TEX120223OAI: oai:DiVA.org:hig-13119DiVA: diva2:557893
Subject / course
Electronics
Educational program
Electronics/Telecommunications – master’s programme (two years) (swe or eng)
Presentation
2012-09-20, 11:320, Högskolan i Gävle. Kungsbäcksvägen 47, Gävle, 11:00 (English)
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-10-01 Created: 2012-09-29 Last updated: 2012-10-01Bibliographically approved

Open Access in DiVA

fulltext(2039 kB)232 downloads
File information
File name FULLTEXT01.pdfFile size 2039 kBChecksum SHA-512
318c28513dd657a24cfb0298d065feffbc74f1151c52f8a9d7b6576b0df9ada0c6a9aa58f15784055b61e3ba10e7354ef7ef018180c4687c15e73b1ad5b2c7d1
Type fulltextMimetype application/pdf

By organisation
Department of Electronics, Mathematics and Natural Sciences
Telecommunications

Search outside of DiVA

GoogleGoogle Scholar
Total: 232 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

urn-nbn

Altmetric score

urn-nbn
Total: 115 hits
CiteExportLink to record
Permanent link

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