標題: | Miniaturized Hybrid Ring Bandpass Filter with a Notched Band and an Improved Upper Stopband Using Double-Sided Parallel-Strip Lines |
作者: | Li, Jian-Yu Chi, Chun-Hsiang Chang, Chi-Yang 電信工程研究所 Institute of Communications Engineering |
關鍵字: | wideband bandpass filter;hybrid ring;double-sided parallel-strip line (DSPSL);offset double-sided parallel-strip line (ODSPSL);stepped-impedance;notch |
公開日期: | 2012 |
摘要: | A wideband stepped-impedance hybrid bandpass filter with a notched band and an improved upper stopband is proposed. The double-sided parallel-strip line (DSPSL) is employed to implement the proposed filter. The stepped-impedance structure improves the upper stopband performance and reduces the size. Besides, the open-circuited stub embedded in the stepped-impedance line of the hybrid ring is used to create a notched band. The low impedance portion of the stepped-impedance line is formed by the DSPSL while the high impedance portion of that is constructed by the offset double-sided parallel-strip line (ODSPSL). The design example is fabricated on a 20 mil RO4003 substrate. The measurement results show excellent agreements with the electromagnetic simulation. |
URI: | http://hdl.handle.net/11536/21988 |
ISBN: | 978-1-4577-1330-9 |
期刊: | 2012 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC 2012) |
起始頁: | 250 |
結束頁: | 252 |
顯示於類別: | 會議論文 |