Patch Antenna 2.45 GHz

A Patch Antenna (also known as a rectangular microstrip antenna) is a type of radio antenna with a low profile, which can be mounted on a flat surface. It consists of a flat rectangular sheet or "patch" of metal, mounted over a larger sheet of metal called a ground plane. They are the original type of microstrip antenna described by Howell. A patch antenna is usually constructed on a dielectric substrate, using the same materials and lithography processes used to make printed circuit boards.

Advantages & Disadvantages of Patch Antenna

Formula for Dimension Patch Antenna

Front View

Ground Plane

Perspective View

Use AppCAD for suitable dimension feeding point

SIMULATION RESULT

Result Return Loss in CST

ACTUAL RESULT

Result by using Network Analyzer

Attachment:

Patch Antenna 2.45 GHz

Measure the return loss by Network Analyzer

**I got the few problems such as a characteristic of board. I used FR-4 board and the thickness board write in spec, "1.60 mm", but when I measured I got "1.568 mm". That's why the desired result very different with the actual result. This antenna also had modified by using cooper sticker. Actually, the result not get like this. I heard from the Technologist PCB Laboratory explanation, normally in Radio Frequency should used Rogers Board or normally called Duroid Board. Its more accuracy specification and its very expensive.

For more idea or suggestion to share with me can email me at
djbink92@hotmail.co.uk
or add me at facebook
https://www.facebook.com/aziz.bing 
or write the comment below. LOL~

WIRELESS POWER TRANSMISSION

INTRODUCTION

"Power Transmission" is defined as a three-step process in which:

1. Electrical Power is converted into Radio Frequency signals.
2. RF Power transmitted through space to some distant 
3. The power is collected and converted to DC Power an the receiving point. 

EARLY HISTORY OF POWER TRANSMISSION 

by RADIO WAVES

Power Transmission by radio waves dates back to the early work of Hienrich Hertz. Not only did he demonstrate electromagnetic wave propagation in free space by using a complete system with a spark gap to generate high-frequency power and to detect it at the receiving end, but he also used parabolic reflector at both the transmitting and receiving ends of the system. In this respect his experiment resemble present more closely than the later better recognized work of Tesla that was based on much longer wavelength and which did not have any provision for focusing the radio waves. 

2012-NEW ERA Wireless Power Transmission 

Discovered by Abdul Aziz (Politeknik Melaka), guided by Prof. Dr. Ir. Adz Jamros (Universiti Teknologi Petronas) and Prof. Dr. Ir. M Azman (Universiti Teknologi Petronas)

RF Signal Transmit by PowerCast Transmitter

PowerCast TX91501

RF to DC Circuit

3 Stages charge pump designed by using ADS

Component:

1. Schottky Diode 1N5711
2. Electrolytic Capacitor 1uF 
3. SMA connector

Result Simulation 

Real Circuit

LED as a indicator

RESULT

Distance 1 Meter:

Distance 0.5 Meter:

Distance 0.02 Meter:

CONCLUSION

Actually this project for RF Power Harvester. After going through to make it I had learned many things such as the radio signal have a narrow bandwidth. So, I used the PowerCast transmitter. Its transmit signal in wide bandwidth.


For future, I will find out how to collect all signal around as and convert it to the dc electrical and its will be used for charge handphone, laptop and all kind application uses electrical power. 

"I just only need a power from the signal. I not disturb the data from the signal."

ACKNOWLEDGEMENT

Foremost, I would like to express my sincere gratitude to my advisor Prof Dr. Ir.  Adz Jamros and Prof. Dr. Ir. M Azman for the continuous support of my study and research, for his patience, motivation, enthusiasm, and immense knowledge. I could not have imagined having a better advisor and mentor during undergo my industrial training for the six month at Universiti Teknologi PETRONAS.

Not forget also to wish thanks to Mr. Samuel (Master Student) help me to give explanation and sharing the idea about this project. Thank You also gives to EE Technologist and Mr. Shah and Mr. Mahfuz for their advices and support for this project.

Last but not the least, I would like to thank my family: my father Mr. Rosli , for giving birth to me at the first place and supporting me spiritually throughout my life.

                                                                                                         -Love you daddy-

"kambingmennggile"

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Email: djbink92@hotmail.co.uk