Design of Bandstop Filter Using Ring Resonator with High-Selectivity, The Evaluation of High-Frequency Printed Circuit Board, and Antenna Design for Thermotherapy on Finger Application

• Main Authors: KAO, WEI-CHENG, 高瑋呈
• Other Authors: TANG, CHING-WEN
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/u9xv2a

碩士 === 國立中正大學 === 電機工程研究所 === 106 === The thesis consists of three parts. The first part is bandstop filter using ring resonator with high selectivity. This research starts from the choice of resonators, select the ring resonator and analysis the ring resonator which have effect the bandwidth performance. Then improvement of the ring resonator, use open stub and a short stub to analyze its characteristics that design cause selectivity above 40 dB. This design of the bandstop filter using ring resonator with high selectivity which center frequency is located at 1 GHz. In addition, electromagnetic simulation is also very consistent with measurement. The second part is The Evaluation of High-Frequency Printed Circuit Board which is in the fourth chapter. This section is an analysis of the measurement methods, measurement corrections, and sources of loss for the network instrument calibration method. Cutting frequency range will affect the correction data that will cause frequency discontinuous, the loss of the printed circuit board is caused by metal conductors, loss tangent, and surface roughness. The third part is Antenna Design for Thermotherapy on Finger Application which is in the fifth chapter. This chapter explores the effects of electromagnetic waves and human bodies, electromagnetic regulations, thermotherapy options, antenna selection and analysis, and antenna power selection. For study of finger thermotherapy, it is hoped that the principle of electromagnetic waves can be used to treat the affected part of the affected part and achieve treatment effect. This chapter uses electromagnetic simulation software with HFSS, IE3D, SIM4LIFE, for different electromagnetic simulation features, do individual analysis.