Design of Simple Integrated Rectenna

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  • Topic: Rectifier, Fractal, Diode
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  • Published : May 16, 2013
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DESIGN OF SIMPLE INTEGRATED RECTENNA FOR GREEN ENERGY HARVESTING

TAN SHI YIING

UNIVERSITI TEKNOLOGI MALAYSIA

UNIVERSITI TEKNOLOGI MALAYSIA
DECLARATION OF THESIS / UNDERGRADUATE PROJECT PAPER AND COPYRIGHT

Author’s full name : Date of birth Title : :

Tan Shi Yiing ________________________________________________ 3 October 1988 ________________________________________________ Design of Simple Integrated Rectenna for ________________________________________________ Green Energy Harvesting ________________________________________________ rd

Academic Session :

________________________________________________

2011/2012

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DESIGN OF SIMPLE INTEGRATED RECTENNA FOR GREEN ENERGY HARVESTING

TAN SHI YIING

A report submitted in partial fulfilment of the requirements for the award of the degree of Bachelor of Engineering (Electrical – Telecommunications)

Faculty of Electrical Engineering Universiti Teknologi Malaysia

JULY 2012

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I declare that this thesis entitled “DESIGN OF SIMPLE INTEGRATED RECTENNA FOR GREEN ENERGY HARVESTING” is the result of my own research except as cited in the references. The thesis has been accepted for any degree and is not concurrently submitted in candidature of any other degree.

Signature Name Date

: : : TAN SHI YIING 6th JULY 2012

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Dedicated to my beloved parents

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ABSTRACT

As the number of portable communication devices is increasing tremendously, the design of low profile communications system is in high demand nowadays. The size of antenna can be designed with many kinds of miniaturization techniques. This thesis presents the design of a fractal patch microstrip antenna and a simple rectifying circuit. The antenna is a miniaturized first iteration Koch fractal island patch at 2.45 GHz ISM band (WiFi, RFID, Bluetooth, etc). It is intended for a rectenna which is used to harvest electric energy from bountiful the unused microwave RF signals into DC output power. The design of the fractal patch is based on the conventional structure of square patch antenna. It is designed on a low loss substrate of GIL GML 1034 with relative permittivity of 3.38 and dielectric thickness of 0.508 mm. Simulations of the rectenna have been performed with several antenna structures using CST Microwave Office 2010 and AWR Microwave Office. The optimum configuration is then fabrication and measured. It is found that the characteristic of Koch fractal patch has reduced the size of the conventional square patch to 43 % and maintains the radiation pattern when its iteration factor is 0.25. The rectifier has also been successfully developed. These count for the successful development of the integrated rectenna.

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ABSTRAK

Bilangan peralatan komunikasi mudah alih mempunyai permintaan yang semakin tinggi pada masa kini. Oleh itu, rekabentuk peralatan yang kecil dan berprofil rendah amat diperlukan. Saiz antena boleh direka dengan pelbagai teknik peminiaturan. Tesis ini membentangkan rekabentuk fraktal antena mikrostrip dan penerus. Antena itu adalah berdasarkan rekaan tampal antena lelaran pertama bentuk fraktal Koch beroperasi pada frekuensi 2.45 GHz (pada jalur frekuensi Industrial-Sciency and Medical – Wifi, RFID, Bluetooth dll). Antena itu digunakan untuk pembangunan rektena yang boleh menukarkan isyarat gelombang mikro tak digunakan yang banyak terdapat di udara kepada kuasa arus terus. Rekabentuk tampal fraktal ini adalah berdasarkan struktur antena tampal segi empat konvensional pada substratum berkehilangan rendah GIL GML 1034 020 yang mempunyai pemalar dielektrik 3.38 dan ketebalan 0.508 mm. Kerja simulasi struktur antena dijalankan dengan menggunakan perisian CST Microwave Studio 2010 dan AWR Microwave Office. Konfigurasi optimum kemudiannya difabrikasi dan diuji. Hasil pengujian membuktikan bahawa saiz tampal antena bentuk Koch fraktal adalah 43 % lebih kecil daripada antenna tampal segi empat konvensional tetapi dapat...
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