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ABSTRACT
DESIGN AND CONSTRUCTION OF REDUCED SIZE
PLANAR SPIRAL ANTENNA IN THE
0.5-18 GHz FREQUENCY RANGE
YILDIZ, 5nanç / M.S., Department of Electrical and Electronics Engineering
Supervisor: Prof. Dr. Altunkan HIZAL
October 2004, 106 pages
In this thesis, theoretical and practical evaluation of usual spiral antenna is
revised. Working principles of both types of planar spiral antennas as Equiangular
and Archimedean are introduced. A predesigned microstrip tapered balun used for
feeding section of a spiral antenna is simulated on Ansoft HFSS software.
Successful simulation results are obtained and measurements of implemented
balun structure are made by using an HP 8722 D vector network analyzer.
Antenna measurement techniques used in this study are introduced.
Measurement set-ups are defined and some preliminary knowledge is given on
these.
As the main matter of thesis, reduced size planar spiral antennas are
designed and implemented. Return loss, gain / radiation and polarization patterns of
antennas are measured. Datasets of measurements are compared with each other
and with reference spiral antenna. Quite promising results are obtained and size
reduction of spiral antenna is achieved in many aspects.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12605610/index.pdf |
| Date | 01 December 2004 |
| Creators | Yildiz, Inanc |
| Contributors | Hizal, Altunkan |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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