Design of ultra wideband fractal antenna

مقدم أطروحة جامعية

Abbas, Ihsan Muhammad Husayn

مشرف أطروحة جامعية

Rasul, Jamal Muhammad

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم الهندسة الكهربائية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2013

الملخص الإنجليزي

Ultra wideband technology rapidly moves on due to its advantages.

It comprises: a high data rate, low cost, short range between wireless devices, small size, and low complexity.

However, there are more challenges in designing an ultra wideband antenna than a narrow band one, therefore the design must satisfy the requirements of ultra wideband antenna.

In this work, design of two printed monopole antennas based on fractal structures, is introduced as an approach for the use in ultra wideband communication systems.

Parametric study has been carried out to investigate the effects of varying the parameters of the two proposed antennas.

The first design depends on Koch fractal type fed with a 50Ω microstrip line.

This antenna is designed to be used in frequency range from 3.1 GHz to 10.6 GHz, also band notched characteristics of the proposed antenna to reject the WiMAX band with the frequency range from 3.24 GHz to 3.81 GHz, is realized by etching a slot of a C-shaped rotated with 90o clockwise.

This antenna is printed on FR4 substrate of (4.4) dielectric constant, (1.6) mm thickness, and the fractal geometry is employed in the form of a second iteration Koch curve.

The antenna has small dimensions of (20mm × 25mm × 1.6mm), with return loss ≤ -10 dB, that offers a bandwidth of 2.84 GHz to 13.28 GHz with nearly omnidirectional radiation pattern.

The second proposed design is a V-shaped tree fractal printed monopole antenna fed with a co-planar waveguide.

This antenna is designed to be used in the frequency range from 3.1 GHz to 10.6 GHz.

The proposed antenna is realized on Arlon AD 350 substrate material with a dielectric constant (3.5) and a thickness of (1.6) mm.

The dimensions of the second design are (20mm × 37mm × 1.6mm),with acceptable performance for return loss < -10 dB, that offers a bandwidth of 3 GHz to 13 GHz with nearly omnidirectional radiation pattern.

The simulation of the two designs is accomplished through the microwave studio suite of computer simulation technology CST simulator, which is based on finite integration technique.

التخصصات الرئيسية

الهندسة الكهربائية

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-418013