Printed fractal antennas
Printed fractal antennas
- Author(s): R. Breden and R.J. Langley
- DOI: 10.1049/cp:19990001
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- Author(s): R. Breden and R.J. Langley Source: IEE National Conference on Antennas and Propagation, 1999 p. 1 – 4
- Conference: IEE National Conference on Antennas and Propagation
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- DOI: 10.1049/cp:19990001
- ISBN: 0 85296 713 6
- Location: York, UK
- Conference date: 31 March-1 April 1999
- Format: PDF
One aspect of this paper is to describe the possibilities for reducing the overall size of a monopole so that they can be hidden within a system rather than protrude from it. Improved bandwidth results from the bow-tie monopole but there are instances where individual bands rather than a single band is preferable, for example for rejection of unwanted signals. One class of antenna to replace the monopole is the printed fractal antenna. Two types of fractal antennas are discussed, the Koch fractal patterns and the Sierpinski gasket which is akin to a printed bow-tie antenna. In both classes of antenna their radiation patterns, efficiency and frequency response as well as dimensions are discussed and compared. The principal application for the work described here is to provide hidden antennas on vehicles for multiband radio and television services. These include AM, FM and DAB services.
Inspec keywords: frequency modulation; microstrip antennas; television applications; frequency response; VHF antennas; mobile antennas; fractals; antenna radiation patterns; monopole antennas; digital audio broadcasting
Subjects: Radio and television broadcasting; Single antennas
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