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A differential-mode wideband bandpass filter on slotline multi-mode resonator with controllable bandwidth
Chen D.2; Bu H.1; Zhu L.1; Cheng C.2
2015
Source PublicationIEEE Microwave and Wireless Components Letters
ISSN15311309
Volume25Issue:1Pages:28-30
Abstract

This letter presents a novel differential-mode (DM) wideband bandpass filter (BPF) on slotline multi-mode resonator (MMR) with controllable bandwidth. The BPF consists of a cross-shaped slotline MMR etched on the ground plane and two pairs of microstrip feeding line. On the one hand, with proper placement of the slotline MMR, the coupling between the slotline MMR and DM feeding lines can be flexibly controlled to achieve the desired DM passband. On the other hand, the cross-shaped slotline MMR is fully broken or disconnected in the middle portion under the CM excitation, thereby obtaining the CM suppression over the DM passband. Moreover, the bandwidth of the DM passband can be freely adjusted through the impedance ratio of the slotline MMR. To verify the design concept, a filter sample has been designed and fabricated. Within the DM passband, the insertion loss of the CM signals is higher than 20.0 dB, the 3 dB fractional bandwidth of the DM passband achieves around 107.7%. The measured results are obtained in good agreement with the predicted ones.

KeywordCross-shaped Slotline Multi-mode Resonator (Mmr) And Common-mode (Cm) Suppression Wideband Differential-mode (Dm) Bandpass Filter (Bpf)
DOI10.1109/LMWC.2014.2370099
URLView the original
Indexed BySCI
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000347695700010
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Universidade de Macau
2.Nanjing University of Post and TeleCommunications
Recommended Citation
GB/T 7714
Chen D.,Bu H.,Zhu L.,et al. A differential-mode wideband bandpass filter on slotline multi-mode resonator with controllable bandwidth[J]. IEEE Microwave and Wireless Components Letters,2015,25(1):28-30.
APA Chen D.,Bu H.,Zhu L.,&Cheng C..(2015).A differential-mode wideband bandpass filter on slotline multi-mode resonator with controllable bandwidth.IEEE Microwave and Wireless Components Letters,25(1),28-30.
MLA Chen D.,et al."A differential-mode wideband bandpass filter on slotline multi-mode resonator with controllable bandwidth".IEEE Microwave and Wireless Components Letters 25.1(2015):28-30.
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