High-selectivity triband bandpass filter based on dual-plane microstrip/slotline structure

• Published in: Microwave and optical technology letters Vol. 57; no. 9; pp. 2225 - 2228
• Main Authors: Shi, Li-Yun, Wang, Ning, Wu, Lin-Sheng
• Format: Journal Article
• Language: English
• Published: New York Blackwell Publishing Ltd 01.09.2015; Wiley Subscription Services, Inc
• Subjects: Bandpass filters; dual-mode; dual-plane structure; Local area networks; Microwaves; Resonators; Simulation; slotline; triband; Wireless networks

ABSTRACT A compact and high‐selectivity triband bandpass filter (BPF) is proposed. The filter has a dual‐plane structure, consisting of a pair of dual‐mode open‐loop microstrip resonators and a dual‐mode slotline resonator. Using this structure, three passbands as well as five transmission zeros nea...