Compact Bandstop Filters with Extended Upper Passbands by Majeed A. S. Alkanhal

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Design of a Compact Passband Frequency Selective Surface with Stable Resonance by Samineni Peddakrishna, Taimoor Khan, Binod Kumar Kanaujia, N. Nasimuddin

“…We propose a compact planar passband frequency selective surface (FSS) operating at the resonance frequency of 3.81 GHz. …”
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FIR to FIR Model Reduction with Linear Group Delay in Passband by SDP Optimization by Haijiang Hu, Shaojing Song, Fengdeng Zhang

“…The experiment results show this method has good performance on the magnitude error and the linear phase in passband. Therefore, this method can be used in the field of digital signal processing.…”
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Automated synthesis of integrated microwave LC-filters layouts with passband losses minimization by V. V. Erokhin, S. A. Zavyalov

“…The paper proposes the developed technique for automated synthesis of integrated microwave LC filter layouts with passband losses minimization by minimizing interconnection lengths and searching for optimal layouts of conductors, inductors, and capacitors. …”
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Miniaturized Filters with a Controllable Number of Passbands by Embedding Serpentine Microstrip Resonators in SIW by Xiaohei Yan, Wenjing Mu, Minjie Guo

“…These resonators are composed of upper and lower parts, which form a single-passband filter when the lengths are equal and a double-passband filter when the lengths are unequal. …”
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L’Église dansante. Initiation, rituel et liturgie en France au bas Moyen Âge by Philip Knäble

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Evaluation of satisfaction of tourists the quality of tourism services based on Kano model and SERVQUAL (Case Study: Tehran Darband area catering units) by Jamileh Tavakolinia, Mostafa Haraeeni

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Analysis of flood risk based on WMS model in urban catchment area Case study: Damand basins, Golabdareh and Saadabad, Tehran metropolitan area by amir safari, ali ahmadabadi, zahra sedighifar

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Impact of lens autofluorescence and opacification on retinal imaging by Frank G Holz, Maximilian Pfau, Monika Fleckenstein, Raffael Liegl, Geena C Rennen, Marc Vaisband, Jan Hasenauer

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Design of Shadow Filter Using Low-Voltage Multiple-Input Operational Transconductance Amplifiers by Montree Kumngern, Fabian Khateb, Tomasz Kulej, Natchayathorn Wattikornsirikul

“…The second configuration allows for the variation of the natural frequency without impacting the passband gains of the HPF, LPF, and BPF, maintaining constant passband gains. …”
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Design of IIR Digital Filters with Arbitrary Flatness Using Iterative Quadratic Programming by Yasunori Sugita

“…In the design of Chebyshev-type filters, the flatness condition in the stopband is preincorporated into a transfer function, and an equiripple characteristic in the passband is achieved by iteratively solving the QP problem using the transfer function. …”
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A Varactor-Tunable Rasorber Using Tripole and Ring Slot Elements by Qingxin Guo, Qian Chen, Jianxun Su, Zengrui Li

“…In this study, a frequency-selective rasorber with a tunable passband and two absorptive bands is presented. It is designed using two active FSSs, an absorptive FSS realized with tripole elements, and a lossless bandpass FSS achieved with ring slots. …”
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Design of a CPW-Fed Band-Notched UWB Antenna Using a Feeder-Embedded Slotline Resonator by Amin M. Abbosh

“…The gain of the antennas with the resonator is about 2.2 dBi at the passband, while it is less than −8 dBi at the rejected subband.…”
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Optimum Design of Novel UWB Multilayer Microstrip Hairpin Filters with Harmonic Suppression and Impedance Matching by Homayoon Oraizi, Nima Azadi-Tinat

“…The insertion loss in the passband varies from 0.3 dB to 3 dB (in the worst case at the edge of passband) and in the stopband is about 30 dB up to 20 GHz. …”
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Analysis and implementation of 3D bandpass frequency selective structure with high frequency selectivity by Keya Tao, Bo Li, Yiming Tang, Ming Zhang, Yaming Bo

“…By establishing an equivalent circuit model, it is obtained that the transmission poles in the passband are produced by a short‐circuited resonator and an open‐circuited resonator, and the transmission zeros close to the passband are attributed to the fundamental and spurious resonant frequencies of another short‐circuited resonator. …”
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Design of a Suspended Stripline Narrow Bandpass Filter with Ultrawideband Harmonic Suppression by Ju Seong Park, Wahab Mohyuddin, Hyun Chul Choi, Kang Wook Kim

“…As an example of the NBPF, a filter with a passband center frequency f0 of 0.75 GHz and bandwidth of 5% was implemented and proved to suppress the harmonic passbands up to 13.5 f0. …”
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Frequency Selective Properties of Coaxial Transmission Lines Loaded with Combined Artificial Inclusions by Francisco Falcone, Javier Gil

“…The introduction of split ring resonators, conductor stubs, air gaps, and combination of these gives rise to new frequency selective properties, such as stopband or passband behavior, observable in planar as well as volumetric metamaterial structures. …”
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Design of Fixed Wideband Beamformer through Improved Maximum Energy Approach by Rui Du, Yangyu Fan, Jianshu Wang

“…This approach has been improved by integrating response variation (RV) into the target function to maintain the frequency invariant property of wideband beamformer over the whole passband. Two methods for designing null to suppress interference signal also have been proposed to make the wideband beamformer robust in complicated environment. …”
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A Novel Band-Stop Filter with Band-Pass, High-Pass, and Low-Pass Negative Group Delay Characteristics by Aixia Yuan, Shaojun Fang, Zhongbao Wang, Hongmei Liu, Hongjun Zhang

“…A band-stop filter with three different negative group delay functions in the passband, namely, band pass, high pass and low pass, is proposed, which has small insertion loss. …”
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Novel Meandered Line EBG Filters with Significant Size Reduction Using Sine Tapering by S. M. Shakil Hassan, Kalyan Kumar Halder, Md. Nurunnabi Mollah

“…This method deduces mellifluous coefficients that improves the performance with reasonable stopband width, preferable insertion loss level, and much-minimized passband ripples compared to similar designs with other tapering methods (e.g., binomial distribution, Chebyshev distribution, and conventional cosine tapering). …”
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