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Design Considerations on the Minimum Size of Broadband Antennas for UWB Applications.
- Source :
- IEEE Transactions on Microwave Theory & Techniques; Jan2008, Vol. 56 Issue 1, p15-21, 7p, 4 Black and White Photographs, 4 Diagrams, 10 Graphs
- Publication Year :
- 2008
-
Abstract
- The practical realization of Chu's minimum-sized antenna is investigated using self-complementary antennas. Rigorous bandwidth formulas for broadband antennas are derived for broadband antennas based on Chu's fundamental mode equivalent circuit. By comparing input impedances and radiation patterns, the fabricated self-complementary antenna used for Japan's ultra-wideband higher band (7.25-10.25 GHz) is found approximated by the minimum-sized antenna. Using the rigorous bandwidth formulas above, the fabricated antenna is shown to be smaller than the minimum-sized antenna. This breakthrough is achieved by using a more complicated matching circuit for broadband antennas instead of the single-stage inductor used in bandwidth estimation with the Q factor. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 56
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 28793349
- Full Text :
- https://doi.org/10.1109/TMTT.2007.912006