Design and analysis of antennas using characteristic mode theory
Zaicev, Timofei (2016)
2016
Master's Degree Programme in Electrical Engineering
Tieto- ja sähkötekniikan tiedekunta - Faculty of Computing and Electrical Engineering
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Hyväksymispäivämäärä
2016-01-13
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201512221852
https://urn.fi/URN:NBN:fi:tty-201512221852
Tiivistelmä
This master thesis reports usage of characteristic modes in design and analysis of antennas. It provides detailed information about physical meaning of characteristic modes in case of radiators and coaxially fed patch antennas. Theory of characteristic modes [TCM] shows physical insight about radiation processes that are taking place in antennas.
Antenna analysis procedure using TCM is described for several patch antennas. These cases show that TCM can be used to predict and to analyze radiation parameters of antennas. In addition, isospectral domains are introduced in terms of TCM and it is shown that such domains results in similar or even identical TCM results.
A single band rectangular patch antenna for Wi-Fi applications and a dual-band circular patch antenna are designed using TCM. It is discovered that radiation properties predicted by TCM hold for constructed TCM-based models of antennas if construction is very precise. This is especially important for multiband antennas.
As a result, this master thesis can serve as a basis for further researches in the field of characteristic modes related to patch antennas and isospectral domains. Possible directions of future work also mentioned.
Antenna analysis procedure using TCM is described for several patch antennas. These cases show that TCM can be used to predict and to analyze radiation parameters of antennas. In addition, isospectral domains are introduced in terms of TCM and it is shown that such domains results in similar or even identical TCM results.
A single band rectangular patch antenna for Wi-Fi applications and a dual-band circular patch antenna are designed using TCM. It is discovered that radiation properties predicted by TCM hold for constructed TCM-based models of antennas if construction is very precise. This is especially important for multiband antennas.
As a result, this master thesis can serve as a basis for further researches in the field of characteristic modes related to patch antennas and isospectral domains. Possible directions of future work also mentioned.