Outlook

With my research experience in antenna design, fabrication, measurement and characterization, I have the potential to investigate, including, but not limited to, compact antenna array systems, microwave imaging systems, integrated antennas, RFID and EM power transfer methods. Nowadays, advanced software and computing facilities are available for EM modeling, which can be very effectively used in solving complex problems. I expect to take advantage of such advancements to thoroughly investigate novel designs and technologies.

Integrated Antennas

Antennas are very much affected by nearby dielectric and metallic structures. The coupling between the commu- nication device casing and the antenna can lead to performance degradation, if the process of coupling is not well understood. Therefore, designing antennas by taking these effects into consideration is necessary. I intend to use modern software tools to accurately model surrounding objects of mobile phones, PDAs, laptops, airplanes, cars or satellites to develop guidelines in antenna integration. Finding new matching algorithms in conjunction with parametric studies is the objective of this research.

Compact Arrays for MIMO Systems

Compact arrays with very low mutual coupling between elements are required for Multiple Input Multiple Output (MIMO) systems to achieve expected channel capacities. This technology is used, as prescribed in the IEEE standards, in WiMAX broadband. I have learned from my previous research experience that magnetic antennas, mainly slots and loops, have very low EM coupling to nearby structures. Therefore, it will be logical to consider building compact arrays of loop or slot antennas for MIMO systems. In the user-device, these compact arrays, with very low mutual coupling between elements, are highly desirable.

Microwave Imaging and Radar

UWB antennas are used as sensors and emitters in experimental breast tumor detection systems. These sensors can be further improved to enhance the image quality and to reduce the amount of signal processing. I will be investigating antennas conformal to the body, which have skin as a superstrate and a flexible dielectric substrate. These antennas can be arrayed and integrated to form a wearable detection system, which can be used conveniently for routine testing for malignant tumors.

EM Power Transfer

Evanescent field coupling between two or more resonant structures has been recently proposed as a means of wireless power transfer. However, building a working system, for example, charging a battery of a mobile device over a wireless connection, requires the solving of some complex engineering problems. The main problems, identified sofar, are dielectric losses and the possible negative in°uence of nearby structures. Nevertheless, I believe these systems have a high potential to be commercialized, considering the current trend of adopting wireless technology in all aspects of consumer electronics.

If you have questions, willing to collaborate with my future projects or if you have new idea to share please contact me.