Browsing by Author "Huang, Hsien-Tung"

Now showing 1 - 2 of 2

An Impedance Matching Technique for Bandwidth Enhancement of Terminal Antennas
(2014)
Hsiao, Cherng-Chyi
;
Huang, Hsien-Tung
;
Hwang, Ruey-Bing
;
電機學院
;
電機工程學系
Built-in antennas for terminal devices are inherently electrically small which is usually difficult to meet satisfactorily the specifications in bandwidth and efficiency for applicable operation. A simplified real frequency technique was employed in this paper for impedance matching of a DVB-H antenna and a GSM 850/900 antenna. Trade off of antenna realized gain and band width has been considered to optimize the antenna performance.
Scattering characteristics of cylindrical metamaterials
(2016-03-01)
Hwang, Ruey-Bing
;
Huang, Hsien-Tung
;
電機資訊學士班
;
Undergraduate Honors Program of Electrical Engineering and Computer Science
This paper reports the scattering of electromagnetic plane wave by annular metamaterials composed of concentric regular dielectric layers of infinite length. Interestingly, in certain frequency ranges, their scattering properties are similar to those of a perfect electric conductor cylinder, except that the tangential electric field on their surfaces does not vanish. Moreover, the frequency bands of total reflection spectra can be rigorously predicted using Floquet-Bloch theorem. (C) 2016 Author(s).