| Summary: | 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.
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