Compact Microstrip Bandpass Filter With Multispurious Suppression Using Quarter-Wavelength and Half-Wavelength Uniform Impedance Resonators. - Kai-Ran Xiang; Fu-Chang Chen (IEEE Access, 2018)

Design of Tunable Coaxial Bandpass Filters With Constant Absolute Bandwidth Using One Tuning Element. - Jun-Jie Yan; Fu-Chang Chen; Kai-Ran Xiang; Zhi-Hong Tu (IEEE Trans. Circuits Syst. II Express Briefs, 2024)