Authors: Dr. Yongxin Guo, Associate Professor
Source: FERMAT, Volume 15, Communication 9, May-Jun., 2015
Abstract: In this presentation, the recent research activities on “Small and Wideband Patch Antennas and Planar Microwave Circuits for Wireless and Biomedical Applications” conducted by the research group led by Associate Professor Yongxin Guo at the Department of Electrical and Computer Engineering, National University of Singapore will be reported. The topics on “Antennas and Wireless Power for Biomedical Applications” has received a lot of attention. Onbody antennas for wearable applications and In-body antennas for bio-implants will be presented first. Wireless power and energy harvesting have become more important to enable bio-telemetry. In addition to the traditional inductive near-field wireless power, capacitive wireless power and far-field wireless power will also be addressed. In the meantime, effort has been made to improve the dynamic range of the rectifier circuit for the energy harvesting, especially for low-power scenarios. The topic on “Small and Wideband Patch Antennas” has been focused previously. The wideband L-probe feeding technique will be introduced here. In the meantime, wideband patch antennas with broadband feeding networks will be presented. The antenna performance can be improved significantly in a wide bandwidth with the proposed broadband feeding networks. Various wideband millimeter-wave antennas-in-package and on-chip antennas will also be reported for future system in package applications since antennas are small in size at higher frequencies. “MMIC modeling and design” is another topic we are put effort on as it is crucial to develop high-density integrated transceivers for wireless and biomedical applications. It is believed that developing high-density integrated transceiver technologies for wireless and biomedical applications will attract more interests.
Key words: Wideband patch antennas, small antennas, wearable antennas, implantable antennas, antennas in package, on-chip antennas, wideband feeding networks, wireless power, inductive wireless power, capacitive wireless power, far-field wireless power, RF energy harvesting, MMIC, LTCC.
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