An ultra-wide bandpass filter with good out-of-band performance

作者：Li Zhong^*; Wang Guang Ming; Zhang Chen Xin; Long Ge Nong

来源：Microwave and Optical Technology Letters, 2008, 50(7): 1735-1737.

DOI：10.1002/mop.23517

• ultra-wideband
• microstrip filler
• bandpass filter
• stepped impedance hairpin resonator

An ultra-wideband microstrip filter with good out-of-band performance is designed and demonstrated. The filter design is based oil a circuit model for all optimum short-circuited stub transmission-line filter whose unit elements or connecting liner tire nonredundant. Substituting the connecting lines by the lowpass filter using stepped impedance hairpin resonator, the undesired spurious bands can be efficiently suppressed, and the designed filter length is reduced. According to the different requirements, the broadband bandpass and lowpass filter call be independently designed and modified, which makes the filter more convenient and easily implemented.

• 出版日期2008-7
• 单位中国人民解放军空军工程大学