Novel Modified Pythagorean Tree Fractal Monopole Antennas for UWB Applications

Author

Pourahmadazar, Javad ; Ghobadi, Changiz ; Nourinia, Javad

Author_Institution

Dept. of Electr. & Electron. Eng., Islamic Azad Univ., Urmia, Iran

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

484

Lastpage

487

Abstract

A novel modified microstrip-fed ultrawide-band (UWB) printed Pythagorean tree fractal monopole antenna is presented. In this letter, by inserting a modified Pythagorean tree fractal in the conventional T-patch, much wider impedance bandwidth and new resonances will be produced. By only increasing the tree fractal iterations, new resonances are obtained. The designed antenna has a compact size of 25 × 25 × 1 mm³ and operates over the frequency band between 2.6 and 11.12 GHz for VSWR <; 2. Using multifractal concept in modified Pythagorean tree fractal antenna design makes monopole antennas flexible in terms of controlling resonances and bandwidth. In this letter, the improvement process of the impedance bandwidth has been presented and discussed.

Keywords

antenna feeds; fractal antennas; microstrip antennas; monopole antennas; ultra wideband antennas; UWB applications; impedance bandwidth; modified Pythagorean tree fractal monopole antennas; modified microstrip-fed ultrawideband printed antenna; multifractal concept; tree fractal iterations; Antenna measurements; Bandwidth; Fractals; Impedance; Ultra wideband antennas; 2-D fractal; Pythagorean tree; fractal monopole antenna; ultrawideband (UWB);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2154354

Filename

5766703