Wireless
communication industry is in rapid growth in the last years. Due to the huge
progress in development of communication systems in the last decade development
of wideband communication systems is continuous growth. However, development of
wideband efficient antennas is one of the major challenges in development of
wideband wireless communication systems. Low cost compact antennas are crucial
in the development of communication systems. Printed notch antennas and
miniaturization techniques are employed to develop efficient compact notch
antennas. Fractal technology is used to improve the electrical performance and
efficiency of notch antennas. Design tradeoffs, computed and measured results
of wideband notch antennas with high efficiency are presented in this paper.
All antennas are analyzed by using 3D full-wave software. The paper presents
new compact Ultra-Wideband notch antenna 1 GHz to 6 GHz, a wideband notch
antenna 2.1 GHz to 7.8 GHz and a 5.8 GHz to 18 GHz fractal notch antenna.
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