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
Design of Ultra Wideband Antenna Array for Microwave Tomography
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Abstract [en]

Microwave tomography is a classical approach for non destructive evaluation. Microwave tomography has many biomedical applications such as brain imaging, temperature sensing in different biological tissues and breast cancer detection.

In a microwave tomography system, numbers of radiators are used to transmit microwave signal into an object under test and the scattered fields are recorded. The collected data is used to quantitatively reconstruct the dielectric profiles of the object under test through inverse scattering mechanism.

It has been shown that by using wide band data, highly stable and high resolution reconstructions can be obtained. Lower frequency components provide stability of the reconstructions, while higher frequency components contribute to the resolution.  Accordingly, ultra wideband antennas are required in UWB microwave tomography systems. In addition to ultra wide bandwidth, the antennas in a microwave tomography system should be easy to model with computational program.

In this thesis Printed elliptical monopole antenna (PEMA) is investigated for microwave tomography. It is a multi resonant antenna with simple structure and yield ultra wide bandwidth. The performances of a single antenna and an antenna array are studied. The reflection coefficients of the antenna, mutual coupling between antennas and energy distribution in the near field are obtained by means of simulations in CST microwave studio.   

The simulation result shows that reflection coefficients of the designed antenna are below         -10dB over the entire frequency band of interest (1-4.5GHz), mutual coupling between antennas at different locations are below -20dB over the entire frequency band of interest and the designed antenna also has good electric field distribution in an array configuration which makes the radiated power concentrating in the imaging region. These results indicate that PEMA is a potential antenna for microwave tomography applications.  

Place, publisher, year, edition, pages
2011. , p. 51
Keywords [en]
Printed elliptical monopole antenna, microwave tomography, coupling, matching liquid
Identifiers
URN: urn:nbn:se:hig:diva-8469Archive number: TEX100711OAI: oai:DiVA.org:hig-8469DiVA, id: diva2:398304
Uppsok
Technology
Supervisors
Examiners
Available from: 2011-02-22 Created: 2011-02-17 Last updated: 2011-02-22Bibliographically approved

Open Access in DiVA

fulltext(1094 kB)791 downloads
File information
File name FULLTEXT01.pdfFile size 1094 kBChecksum SHA-512
6d199b09ca5af5c305b3305edd5a5c2a34b1f1a7ddf6d54d9c7ecd9ae4e5999c61b5029b70febfb8af03ec621efbaebba1b880017c858c945d65ec912a9e3853
Type fulltextMimetype application/pdf

By organisation
Department of Electronics, Mathematics and Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 791 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: 507 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