Capacitive-Ended Interdigital Coupled Lines for UWB Bandpass Filters With Improved Out-of-Band Performances

By Sheng Sun, Lei Zhu. IEEE Microwave and Wireless Components Letters, 2006

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Implementation of Compact UWB Bandpass Filter With a Notch-Band (2008, methodology): “To meet this trend, UWB bandpass filters (BPFs) have been recently developed based on various methodologies: integration of multiple-mode resonator (MMR) with two coupled-lines [1]; capacitive-ended coupling section for spurious harmonic suppression [2]; stepped impedance multimode resonator [3]; an”
Application of Electromagnetic Bandgaps to the Design of Ultra-Wide Bandpass Filters With Good Out-of-Band Performance (2006, background): “I. INTRODUCTION OVER THE last years, the design of wide and ultra-widebandpass filters is generating a great interest due to the fast development of broadband wireless communication systems [1]–[10].”
EBG-Embedded Multiple-Mode Resonator for UWB Bandpass Filter With Improved Upper-Stopband Performance (2007, background): “Nevertheless, all the UWB BPFs in [2]–[8] are still embarrassed by the existence of a narrow upper-stopband due to the periodic appearance of multiple passbands, including”
Small Ultra-Wideband (UWB) Bandpass Filter With Notched Band (2008, methodology): “In [2] and [3], the authors utilized the multiple-mode resonator to design UWB BPFs; the designed filter can cover the whole UWB band of 3.”