許博文 Powen Hsu

Distinguished Professor, Department of Electrical Engineering, National Taiwan University
Distinguished Professor, Graduate Institute of Communication Engineering, National Taiwan University
Distinguished Professor, Graduate Institute of Photonics and Optoelectronics, National Taiwan University

Major Research Areas:

Antennas, Microwave and Millimeter Wave Circuits

Research Summary:

Miniaturization and harmonic suppression are two important issues in the design of antennas for wireless communication systems. Miniaturization is important, since in most wireless handheld devices, the area left for placing the antenna is usually small. Harmonic suppression is also important, since it can lower the power in the harmonic modes of the antenna and hence reduce the electromagnetic interference within the transceiver circuitry. L-shaped metal strips will be used in this project to reduce the size and/or suppress the harmonics of the coplanar waveguide-fed slot dipole antenna. The method is simple, and no additional component/device or extra substrate/metal layer is needed. Our preliminary simulation results show that by properly placing the L-shaped strip inside the slot, the antenna can either be reduced in size or its harmonics be suppressed. However, the theory behind the operation and the optimization and experimental verification of the design are still needed to be carried out. These are the purposes of this research project.