招待講演

海外講師をお招きして招待講演を開催いたします。（※聴講は大会参加登録が必要です）

■日　時：9月26日(木)　15:10～15:40

■会　場：第11会場　[Ｄ会場]機械工学科1号棟　11教室

■開催セッション

International Session (1) Electromagnetic Waves and Antennas
国際セッション(1)（電磁波・アンテナ）

■共　催：IEEE Antennas and Propagation Society Fukuoka Chapter

■講　師：Prof. Chi-Fang Huang （Tatung University, TAIWAN）

■講演概要
This project is for designing a compact antenna which is to be fabricated on the main board inside a headphone of gaming. Furthermore, this antenna is specifically designed for the Wi-Fi protocol, namely for the IEEE 802.11 regulation and the operating frequency bands 2.4GHz and 5GHz. A com-plex structure of transmission-line antenna (Planar Inverted-F Antenna - PIFA) is adopted to realize this characteristics with multi/wide bands. During design, the full-wave electromagnetic simulation tool CST is used, and the electronic components on main board even are included in simula-tion for the consideration both of frequency response and radiation patterns. 

　The original internal antenna’s patterns are not well controlled because of the complex circumstances. Since the plastic housing of the gaming head-phone do affect the resultant radiation patterns, optimization work can be carried out by the housing materials in terms of radiation characteristics. Considering the application of OFDM (Orthogonal Frequency Division Multiplexing) in the Wi-Fi communication, the omnidirectional patterns are usually proposed. For such a goal, the Genetic Algorithms (GA) is applied to trim the housing material. The whole GA process is presented and the as-sociated measurement results are reported as well.