Dual-band Filtering Antenna Design of Using Stepped-impedance Resonators

• Main Authors: Chih-yuan Hsieh, 謝志遠
• Other Authors: Tzyh-ghuang Ma
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/88373698083186239537

碩士 === 國立臺灣科技大學 === 電機工程系 === 101 === A novel dual-band filtering antenna operated at 2.45/5.8 GHz is proposed and investigated in this thesis. The proposed filtering antenna is composed of a dual-band patch antenna and two stages of half-wavelength stepped-impedance resonators. As the dual-band filtering antenna is a rare topic in the literature, it is a good topic worthy of intensive study. To successfully develop the new dual-band filtering antenna, a typical three-pole dual-band parallel-line bandpass filter is first implemented by utilizing the half-wavelength stepped-impedance resonators. The design concept, synthesis procedure, and experimental results are carefully discussed. Then, by replacing the last stage of the three-pole filter with a patch antenna as a low-Q resonator and appropriately adjusting the coupling mechanism, a dual-band filtering antenna is realized on three-layer PCB process. The operational principle, synthesis equations, equivalent circuit model, design procedure, and experimental results are given and discussed in detail in this thesis.