Wide-stopband Millimeter-wave BPF on GaN MMIC Using Asymmetric Feeding Structure
This paper presents a novel compact bandpass filter for 30 GHz millimeter-wave applications in Monolithic Microwave Integrated Circuit(MMIC).The proposed circuit consists of two symmetrical coupled quarter-wavelength transmission-line resonators and two coupled transmission-line feeding structures.Two feeding lines are designed as asymmetrical structures,which are utilized not only to cause mismatch at the third harmonic frequency between the resonator and feeding lines so that the third harmonic can be suppressed but also to provide source-loaded to generate two transmission zeros near the passband,resulting in high selectivity.To verify the proposed idea,an experiment filter has been implemented.High skirt selectivity and wide stopband are observed in the results.
Jin Xu Xu Xiu Yin Zhang Xiao Feng Liu
School of Electronic and Information Engineering South China University of Technology,Guangzhou 510640,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
2529-2532
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）