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Artykuły w czasopismach na temat „Planer filter”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Shi, Liyun, and Jianjun Gao. "Multitransmission Zero Dual-Band Bandpass Filter Using Nonresonating Node for 5G Millimetre-Wave Application." Active and Passive Electronic Components 2018 (December 13, 2018): 1–7. http://dx.doi.org/10.1155/2018/7628598.

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A planer millimetre-wave dual-band bandpass filter with multitransmission zeros is proposed for 5G application. This filter includes two dual-mode open-loop resonators. The U-shape nonresonating node is employed to generate an extra coupling path. Finally, a dual-band bandpass filter with five transmission zeros is obtained. The filter is fabricated and measured. Good agreement between simulation and measurement is obtained.

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Rousset, Davy, Sullivan Lechene, Denis Bemer, Francis Bonthoux, and Virginie Matera. "132 Evaluation of the Effectiveness of a New Technical Solution to Reduce Dust Emission from Road Planers." Annals of Work Exposures and Health 67, Supplement_1 (2023): i33. http://dx.doi.org/10.1093/annweh/wxac087.089.

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Abstract A planer equipped with a rotating cutting drum is used to remove about ten cm thick of road surfaces. This process generates dust likely to contain crystalline silica. The machine operator and people around may be particularly exposed. It is therefore essential to promote effective preventive solutions, in particular from dust collection and filtration systems, to reduce dust exposure. Tests were realized to evaluate the performance of technical devices designed to capture and filter dust emitted by road planers. The measurements were carried out on a road planer equipped with an air

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Abdul-Niby, M., M. Farhat, M. Nahas, and Μ. Μ. Alomari. "A Compact Tri-Band Bandpass Filter with High Out-of-Band Rejection." Engineering, Technology & Applied Science Research 7, no. 4 (2017): 1786–90. https://doi.org/10.5281/zenodo.844293.

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This paper presents a planar tri-band bandpass filter with high out-of-band rejection over a wide band. The filter is based on two pairs of λ/4 resonators embedded inside an open loop ring resonator without any size increase, where each pair of resonators are electromagnetically coupled to each other and the feedlines. This results in the excitations of passbands, where the first passband is generated by the open loop resonators. The second and the third passbands are excited by λ/4 resonators. The proposed technique provides sufficient degrees of freedom to control the center frequency and ba

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4

Chang, Mon-Li, Ding-Bing Lin, Hui-Tzu Rao, Hsuan-Yu Lin, and Hsi-Tseng Chou. "Smart Transfer Planer with Multiple Antenna Arrays to Enhance Low Earth Orbit Satellite Communication Ground Links." Electronics 13, no. 17 (2024): 3581. http://dx.doi.org/10.3390/electronics13173581.

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In this study, we propose a smart transfer planer equipped with multiple antenna arrays to improve ground links for low Earth orbit (LEO) satellite communication. The STP features a symmetrical structure and is strategically placed on both ends of a window, serving both indoor and outdoor environments. Using the window glass as a medium, energy transmission occurs through a coupling mechanism between the planers. The design focuses on large array antenna design, beamforming networks, and coupler design on both sides of the glass. Beamforming networks enable the indoor and outdoor antenna array

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5

Farhat, M., J. Munisami, M. Abdul-Niby, and M. Nahas. "A Compact Quint-Band Bandpass Filter Based on Stub-Loaded Resonators." Engineering, Technology & Applied Science Research 7, no. 3 (2017): 1694–98. https://doi.org/10.5281/zenodo.809499.

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This paper presents a planar quant-band bandpass filter with a high out-of-band rejection. The filter is based on inter-coupled stub-loaded resonators, where pairs of resonators are electromagnetically coupled to each other and the feed lines. This results in excitation of passbands, where the first and the third passbands are generated by λ/4 stub-loaded resonators. The second and the fifth passbands are excited by λ/2 stub-loaded resonators. And the fourth passband is generated by λ/2 resonators. The proposed technique provides sufficient degree of freedom to control the center frequency and

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6

Čavlović, Anka Ozana, Ivan Bešlić, Stjepan Pervan, et al. "Occupational exposure to inhalable and respirable wood dust of pedunculate oak (Quercus robur L.) in a furniture factory." BioResources 17, no. 4 (2022): 5831–47. http://dx.doi.org/10.15376/biores.17.4.5831-5847.

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Given the well-known carcinogenicity of hardwood dust, occupational exposure to oak wood dust has been determined in a furniture factory on different wood processing machines during sanding, planing, and milling. Determination of the mass concentrations of respirable and inhalable oak wood dust from ambient air was performed using personal sampling pumps and two types of filter holders: the Higgins-Dewell respirable dust cyclone, manufactured by Casella (Bedford, UK), and the inhalable dust IOM sampler manufactured by SKC (Dorset, UK). Out of a total of 30 values of inhalable mass concentratio

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7

Omelianenko, M. Yu, T. V. Romanenko, and S. Ya Zhuk. "Synthesis of Waveguide-Planar Filters on Stepped-Impedance Resonators." Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 86 (September 30, 2021): 14–21. https://doi.org/10.20535/radap.2021.86.14-21.

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The paper presents the results of the development of E-plane filters with inhomogeneous resonators, proposed by the authors recently. The characteristic of the proposed filters demonstrates the attenuation poles, which significantly improves selective properties in stopband. The nature and behavior of it has been carefully discussed. The paper also presents the proposed method of direct filter synthesis, which allows to obtain the dimensions of the elements of the topology which, in the worst case, require only minor changes in the procedure of their optimization. The influence of losses on th

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8

Al-Yasir, Yasir, Naser Ojaroudi Parchin, Raed Abd-Alhameed, Ahmed Abdulkhaleq, and James Noras. "Recent Progress in the Design of 4G/5G Reconfigurable Filters." Electronics 8, no. 1 (2019): 114. http://dx.doi.org/10.3390/electronics8010114.

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Currently, several microwave filter designs contend for use in wireless communications. Among various microstrip filter designs, the reconfigurable planar filter presents more advantages and better prospects for communication applications, being compact in size, light-weight and cost-effective. Tuneable microwave filters can reduce the number of switches between electronic components. This paper presents a review of recent reconfigurable microwave filter designs, specifically on current advances in tuneable filters that involve high-quality factor resonator filters to control frequency, bandwi

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9

Gohil, Bhumikaba, and Khyati Chavda. "Design & Simulation of S Band Planar Microwave Filter for Wireless Application." IOP Conference Series: Materials Science and Engineering 1187, no. 1 (2021): 012016. http://dx.doi.org/10.1088/1757-899x/1187/1/012016.

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Abstract Reducing the size of today’s wireless communication systems has become an important criterion in filter design with minimal possible value of filter parameters. To achieve this goal in wireless communication system, filter design is the most important part of the signal transmission process. Conventional filters are very important for modern wireless communication systems as they do not provide the desired miniaturization and results. Recently, using metamaterials and dielectric resonators, the filter size has been drastically reduced to a very small size for practical applications. T

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10

Su, Te-Jen, Tsang-Chi Yang, Wen-Pin Tsai, and Jia-Wei Liu. "Design Two-Dimensional IIR Filters Based on Clonal Selection Algorithm with Singular Value Decomposition." Research Letters in Signal Processing 2007 (2007): 1–5. http://dx.doi.org/10.1155/2007/32081.

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In this letter, clonal selection algorithm (CSA) with singular value decomposition (SVD) method is investigated for the realization of two-dimentional (2D) infinite-impulse response (IIR) filters with arbitrary magnitude responses. The CSA is applied to optimize the sampled frequencies of transition band of digital filters, then producing a planar response matrix of a 2D IIR digital filter. By using the SVD, 2D magnitude specifications can be decomposed into a pair of 1D filters, and thus the problem of designing a 2D digital filter can be reduced to the one of designing a pair of 1D digital f

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11

CASSINESE, A., A. ANDREONE, P. ORGIANI, et al. "HIGH POWER HANDLING SUPERCONDUCTING PLANAR FILTERS FOR TELECOMMUNICATION APPLICATIONS." International Journal of Modern Physics B 14, no. 25n27 (2000): 3092–97. http://dx.doi.org/10.1142/s0217979200003368.

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Passive microwave filters based on HTS films are very promising for telecommunication applications. We report on the design, obtained using a commercial 2.5D software, and the realization of filters, fabricated with double sided YBCO films grown on LaAlO 3 substrates, for both receiving and transmission systems. For the receiving side, planar multi-pole interdigital L-band filters with 75 MHz transmission bandwidths have been fabricated on 2" substrates. Up to 80 K this kind of filter, based on a Tchebischev response, shows an insertion loss lower than 0.5 dB with a ripple of 0.3 dB for a maxi

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12

Elahe, Mohammadi, and Ghorbaninejad Habib. "Novel Resonant Structure to Compact Partial H-Plane Band-Pass Waveguide Filter." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 1 (2017): 266–70. https://doi.org/10.11591/ijece.v7i1.pp266-270.

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In this paper partial H-plane band-pass waveguide filter, utilizing a novel resonant structure comprising a metal window along with metal posts has been proposed to compactthe filter size. The metal windows and postshave been implemented transversely in a partial H-plane waveguides, which have one-quarter cross section size compared to the conventional waveguides in the same frequency range. Partial H-plane band-pass waveguide filter with novel proposed resonant structures has considerably shorter longitudinal length compared to the conventional partial H-plane filters, so that they reduce bot

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13

Simpson, Dakotah J., Roberto Gómez-García, and Dimitra Psychogiou. "Mixed-technology quasi-reflectionless planar filters: bandpass, bandstop, and multi-band designs." International Journal of Microwave and Wireless Technologies 11, no. 5-6 (2019): 466–74. http://dx.doi.org/10.1017/s1759078719000230.

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AbstractThe design of mixed-technology quasi-reflectionless planar bandpass filters (BPFs), bandstop filters (BSFs), and multi-band filters is reported. The proposed quasi-reflectionless filter architectures comprise a main filtering section that determines the power transmission response (bandpass, bandstop, or multi-band type) of the overall circuit network and auxiliary sections that absorb the reflected radio-frequency (RF) signal energy. By loading the input and output ports of the main filtering section with auxiliary filtering sections that exhibit a complementary transfer function with

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14

Donelli, Massimo, Mohammedhusen Manekiya, Girolamo Tagliapietra, and Jacopo Iannacci. "A Reconfigurable Pseudohairpin Filter Based on MEMS Switches." Sensors 22, no. 24 (2022): 9644. http://dx.doi.org/10.3390/s22249644.

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This work presents a bandpass-reconfigurable planar pseudohairpin filter based on RF-MEMS switches. Hairpin-line structures are preferred to design microstrip filters because this class of filters offers a more compact size, and, in general, hairpin filters do not need ground connections for resonators. In this work, the U-shape resonators are arranged to obtain an interdigit capacitor to improve the coupling between the resonators. RF-MEMS switches modify the lengths of coupled resonators by adding microstrip segments to control the filter bandwidth, moving the center frequency and the return

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15

Li, Weiping, Zongxi Tang, and Xin Cao. "Design of a Narrow Bandwidth Bandpass Filter Using Compact Spiral Resonator with Chirality." Active and Passive Electronic Components 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/7074392.

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In this article, a compact narrow-bandpass filter with high selectivity and improved rejection level is presented. For miniaturization, a pair of double negative (DNG) cells consisting of quasi-planar chiral resonators are cascaded and electrically loaded to a microstrip transmission line; short ended stubs are introduced to expand upper rejection band. The structure is analyzed using equivalent circuit models and simulated based on EM simulation software. For validation, the proposed filter is fabricated and measured. The measured results are in good agreement with the simulated ones. By comp

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16

Chami, N., D. Saigaa, and A. Djaiz. "A New Miniature Micro-Strip Two-Layer Band-Pass Filter Using Aperture-Coupled Hairpin Resonators." Engineering, Technology & Applied Science Research 12, no. 4 (2022): 9038–41. http://dx.doi.org/10.48084/etasr.5037.

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The goal of this project was to provide novel band-pass filter design techniques for mobile communications, which allow a significant reduction in the size of the filters produced. The novelty comes from the transformation of the single layer technique into a double layer technique by inserting coupling slots in a common mass plane. Because of their tiny size, these filters are suitable candidates for integration into mobile communication systems. Indeed, when compared to the dimensions of a single-layer planar filter, the multilayer construction allowed us to reduce the size of the filter by

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17

Lamanov, Y. A., T. O. Kudryavtseva, and N. B. Drobotun. "Design and Research Process of Microstrip Low-Pass Filters with High Slope Steepness." Proceedings of Tomsk State University of Control Systems and Radioelectronics 24, no. 2 (2021): 7–13. http://dx.doi.org/10.21293/1818-0442-2021-24-2-7-13.

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This paper presents the results of design process and scientific investigation of planar low pass filters with cut-off frequencies of 6 and 7 GHz. Main features of this design are high steep performance, high level of rejection out of band (in comparison to conventional topologies), high filter order and small occupied area. The analysis of high absorptive electromagnetic material influence on filter performance are shown as well

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18

Kondapalli, Soumya, Arjuna Madanayake, and Len Bruton. "Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters." International Journal of Antennas and Propagation 2012 (2012): 1–19. http://dx.doi.org/10.1155/2012/234263.

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A design method and an FPGA-based prototype implementation of massively parallel systolic-array VLSI architectures for 2nd-order and 3rd-order frequency-planar beam plane-wave filters are proposed. Frequency-planar beamforming enables highly-directional UWB RF beams at low computational complexity compared to digital phased-array feed techniques. The array factors of the proposed realizations are simulated and both high-directional selectivity and UWB performance are demonstrated. The proposed architectures operate using 2's complement finite precision digital arithmetic. The real-time through

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19

Wang, Hao Ru, Kai Yang, Xiang Rang Ren, and Yi Meng Liu. "Design of Miniaturization Microstrip Filter in L-Band." Advanced Materials Research 816-817 (September 2013): 1037–40. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.1037.

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A curve of the relationship between the gaps of microstrip resonator and coupling coefficients is presented in this paper, which based on the study of small planar microstrip bandpass filter design theory and implementation. According to the curve, a small microstrip bandpass filter with 6.67% relative bandwidth in L-band is designed by Multi-zigzag line and capacitive loading technology. Compared to the similar hairpin line filters, the area of the filter designed in this paper is reduced by 64% with advantage of smaller size and more simple structure. The examples and results of a fifth-orde

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20

Nedelchev, M., and A. Kolev. "Synthesis of Planar Filters Using Defected Ground Structure Miniaturized Hairpin Resonators." Engineering, Technology & Applied Science Research 9, no. 1 (2019): 3734–38. http://dx.doi.org/10.48084/etasr.2424.

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This paper presents an effective technique to suppress the spurious passbands in planar filters by using defected ground structure (DGS) resonators etched in the ground plane. The proposed miniaturized hairpin DGS slot resonator is researched in terms of its resonance frequency, corresponding coupling topologies, and filter design. The resonator and the topologies of coupled DGS resonators are simulated in a fullwave electromagnetic (EM) simulator. Using a curve-fitting technique, useful design formulas are proposed for filter synthesis. Using the synthesis procedure, a 3rd order filter design

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Nedelchev, Marin, and Aleksandar Kolev. "Synthesis of Planar Filters Using Defected Ground Structure Miniaturized Hairpin Resonators." Engineering, Technology & Applied Science Research 9, no. 1 (2019): 3734–38. https://doi.org/10.5281/zenodo.2576260.

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This paper presents an effective technique to suppress the spurious passbands in planar filters by using defected ground structure (DGS) resonators etched in the ground plane. The proposed miniaturized hairpin DGS slot resonator is researched in terms of its resonance frequency, corresponding coupling topologies, and filter design. The resonator and the topologies of coupled DGS resonators are simulated in a fullwave electromagnetic (EM) simulator. Using a curve-fitting technique, useful design formulas are proposed for filter synthesis. Using the synthesis procedure, a 3rd order filter design

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Miek, Daniel, Patrick Boe, Fynn Kamrath, and Michael Höft. "Techniques for the generation of multiple additional transmission zeros in H-plane waveguide filters." International Journal of Microwave and Wireless Technologies 12, no. 8 (2020): 723–32. http://dx.doi.org/10.1017/s1759078720000811.

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AbstractIn this paper, different techniques for the generation of additional transmission zeros (TZs) in planar waveguide filters are investigated. In the classical theory, TZs are generated only by destructive interference of non-adjacent cavities, limiting the available number of TZs to the filter order itself. However, more approaches for the generation of TZs are known, including bypass-coupling in oversized cavities, frequency-dependent coupling apertures as well as dispersive/resonant TZs which can be realized by the direct source to load cross-coupling. The aim of this paper is to combi

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23

Gao, Mingming, Keda Xu, Jingchang Nan, and Li Wang. "Planar Microstrip UWB Bandpass Filter with Quad Notched Bands and High Selectivity." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 14, no. 4 (2021): 493–99. http://dx.doi.org/10.2174/2352096514666210118141959.

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Background: This study aims at solving the problems of large design size and insufficient number of the notched band for traditional ultra-wideband (UWB) filters. A planar compact microstrip UWB bandpass filter (BPF) with quad notched bands and good selectivity is proposed using a modified multiple-mode resonator (MMR) and defected ground structure (DGS). Methods: The MMR consists of a stepped impedance stub above and two pairs of open-circuited stubs on both sides, which can generate the passband and double notched bands of UWB filter, the other two notched bands are obtained by DGS. Results:

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Erokhin, V. V., and S. A. Zavyalov. "Integrated Inductor Layout Optimization for Synthesis of Microwave LC-Filters in Si/SiGe/GaAs Systems on a Chip." Herald of the Siberian State University of Telecommunications and Information Science 17, no. 3 (2023): 87–105. http://dx.doi.org/10.55648/1998-6920-2023-17-3-87-105.

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The paper proposes models of planar symmetric octagonal inductors that differ in the method of inductance calculating and consideration of the structure and characteristics of the technological process. The equations in a closed form for calculating models of integral planar inductors of various configurations are derived. The models were verified by comparing the frequency response of the developed 14-18 GHz bandpass filter model with the frequency response of experimental samples produced in the SiGe 130 nm process. The AFC of the produced filter samples is in the range of the developed filt

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Yechou, Lahcen, Abdelwahed Tribak, Kacim Mohamed, Jamal Zbitou, Abdelmalik Bouyahyaoui, and Angel Mediavilla Sanchez. "Planar wideband band-stop filter with T-inverted shaped open stubs for wideband applications." International Journal of Microwave and Wireless Technologies 9, no. 4 (2016): 773–80. http://dx.doi.org/10.1017/s1759078716000891.

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This paper presents a wideband band-stop filter (BSF) structure designed by using planar technology. The proposed filter consists of a modified conventional band-stop structure with open stubs, inner T-inverted shape, and two input/output feed lines. Based on series of optimization and a specific design method, two compact filters with good electrical performance are obtained. In order to characterize the frequency response of the proposed filters, the performance is carried out numerically using two different solvers (Advanced Design System -Momentum and CST-MWS). Furthermore, in order to val

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Lai, Shuangshuang, Hailin Ming, Qiuyan Huang, et al. "Remote Sensing Extraction of Crown Planar Area and Plant Number of Papayas Using UAV Images with Very High Spatial Resolution." Agronomy 14, no. 3 (2024): 636. http://dx.doi.org/10.3390/agronomy14030636.

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The efficient management of commercial orchards strongly requires accurate information on plant growing status for the implementation of necessary farming activities such as irrigation, fertilization, and pest control. Crown planar area and plant number are two very important parameters directly relating to fruit growth conditions and the final productivity of an orchard. In this study, in order to propose a novel and effective method to extract the crown planar area and number of mature and young papayas based on visible light images obtained from a DJ Phantom 4 RTK, we compared different veg

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Štroner, Martin, Rudolf Urban, and Lenka Línková. "Multidirectional Shift Rasterization (MDSR) Algorithm for Effective Identification of Ground in Dense Point Clouds." Remote Sensing 14, no. 19 (2022): 4916. http://dx.doi.org/10.3390/rs14194916.

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With the ever-increasing popularity of unmanned aerial vehicles and other platforms providing dense point clouds, filters for the identification of ground points in such dense clouds are needed. Many filters have been proposed and are widely used, usually based on the determination of an original surface approximation and subsequent identification of points within a predefined distance from such surface. We presented a new filter, the multidirectional shift rasterization (MDSR) algorithm, which is based on a different principle, i.e., on the identification of just the lowest points in individu

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Pfaff, Florian, Kailai Li, and Uwe D. Hanebeck. "The State Space Subdivision Filter for Estimation on SE(2)." Sensors 21, no. 18 (2021): 6314. http://dx.doi.org/10.3390/s21186314.

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The SE(2) domain can be used to describe the position and orientation of objects in planar scenarios and is inherently nonlinear due to the periodicity of the angle. We present a novel filter that involves splitting up the joint density into a (marginalized) density for the periodic part and a conditional density for the linear part. We subdivide the state space along the periodic dimension and describe each part of the state space using the parameters of a Gaussian and a grid value, which is the function value of the marginalized density for the periodic part at the center of the respective a

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Teymourzaedh, Rozita. "VLSI Implementation of Novel Class of High Speed Pipelined Digital Signal Processing Filter for Wireless Receivers." American Journal of Engineering and Applied Sciences.vISSN 1941-7020 3, no. 4 (2010): 663–69. https://doi.org/10.5281/zenodo.1239903.

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The need for high performance transceiver with high Signal to Noise Ratio (SNR) has driven the communication system to utilize latest technique identified as over sampling systems. It was the most economical modulator and decimation in communication system. It has been proven to increase the SNR and is used in many high performance systems such as in the Analog to Digital Converter (ADC) for wireless transceiver. This research work presented the design of the novel class of decimation and its VLSI implementation which was the sub-component in the over sampling technique. The design and realiza

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Dean, Robert, and Jonathan Richard. "Testing of Flexible Metamaterial RF Filters Implemented through Micromachining LCP Substrates." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, DPC (2012): 001115–38. http://dx.doi.org/10.4071/2012dpc-tp35.

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Metamaterials have a wide range of potential uses in areas such as optics, transmission lines, and RF design. The simplest metamaterial structures are Split-Ring Resonators (SRR) and Complementary Split-Ring Resonators (CSSR). Through the combination of various forms of these structures, different applications in the areas previously stated can be achieved. Under this investigation, a metamaterials transmission line was realized through micromachining a Liquid Crystal Polymer (LCP) substrate. Not only does LCP possess useful RF properties, it is flexible and micromachinable. This transmission

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Zhang, Guoqiang, Abdul Basit, Muhammad Irshad Khan, Amil Daraz, Najmus Saqib, and Farid Zubir. "Multi Frequency Controllable In-Band Suppressions in a Broad Bandwidth Microstrip Filter Design for 5G Wi-Fi and Satellite Communication Systems Utilizing a Quad-Mode Stub-Loaded Resonator." Micromachines 14, no. 4 (2023): 866. http://dx.doi.org/10.3390/mi14040866.

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The key elements used for receiving and processing signals in communication systems are the bandpass filters. Initially, a common operating mechanism was applied for the design of broadband filters, i.e., by cascading low-pass filters or high-pass filters using multiple line resonators with length quarter-half- or full-wavelength with central frequency, but using these approaches, the design topology becomes expensive and complex. The above mechanisms can be possibly overcome using a planar microstrip transmission line structure due to its simple design fabrication procedure and low cost. So,

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BELYAEV, B. A., V. V. TYURNEV, and D. A. SHABANOV. "INVESTIGATION OF OPTICAL RESONATORS AND BANDPASS FILTERS ON STRUCTURES MADE OF ALTERNATING LAYERS OF QUARTZ AND SILVER." Izvestiya vysshikh uchebnykh zavedenii. Fizika 68, no. 1 (2025): 76–89. https://doi.org/10.17223/00213411/68/1/9.

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The characteristics of a planar optical resonator made of quartz glass surrounded by silver mirrors were studied as their thickness varied. The frequency responses of bandpass filters were measured on planar structures obtained by vacuum deposition on quartz glass (SiO2) substrates of three quartz layers, which are half-wavelength resonators separated by four silver (Ag) layers from each other, from the substrate, and from free space. The thicknesses of the Ag and SiO2 layers were determined based on the specified parameters of the filter passband by synthesizing one-dimensional models using e

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George, Anitha, Anju Iqubal, and Abdulla P. "A REVIEW OF THE DESIGN AND DEVELOPMENT OF MICROSTRIP MULTIBAND BANDPASS FILTER FOR 5G SYSTEMS." Journal of Applied Science, Engineering, Technology and Management 2, no. 2 (2024): 03–08. https://doi.org/10.61779/jasetm.v2i2.1.

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Microstrip bandpass filters have been the subject of research for a very long period to suit the needs of contemporary multiservice wireless communication systems. Multiband bandpass filters, or BPFs, are necessary for the receiver front end to work as a single unit that can serve many bands simultaneously. Particularly promising are the compact design, low integration cost, and simplicity of manufacture using printed circuit technology of planar bandpass filters. The design and implementation of filters for fifth-generation (5G) mobile communication systems is complicated due to the necessity

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Uyama, Taichi, Luca Ricci, Marie Ygouf, et al. "JWST/NIRCam Coronagraphic Search for Hidden Planets in the HD 163296 Protoplanetary Disk." Astronomical Journal 169, no. 6 (2025): 287. https://doi.org/10.3847/1538-3881/adc601.

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Abstract HD 163296 is a Herbig Ae/Be star with multiple signposts of ongoing planet formation on its disk, such as prominent rings and gaps, as well as kinematic features as identified by previous Atacama Large Millimeter/submillimeter Array (ALMA) observations. We carried out JWST/NIRCam coronagraphic imaging using the F410M and F200W NIRCam filters, with the goal of detecting the emission from the putative young planets in this system. Our F410M observations did not detect the putative planets at the predicted locations of the ALMA velocity kinks, but they did detect a point-like source cand

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Rhbanou, Ahmed, Fadl El, Nawfal Jebbor, and Seddik Bri. "New design of miniature C-band substrate integrated waveguide bandpass filters using ceramic material." FME Transactions 49, no. 1 (2021): 103–12. http://dx.doi.org/10.5937/fme2101103r.

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This article presents new structures and methods of design of miniature third-order substrate integrated waveguide (SIW) bandpass filters on a high-permittivity ceramic substrate for the C-band. The aim was to appraise the feasibility of such filters by using a 3D electromagnetic (EM) simulator. The substrate integrated waveguide (SIW) offers good quality factors and electrical performances compared with other planar techniques. Its integration capabilities and fabrication cost are other benefits that make it attractive. Ceramic material offer electrical properties suitable in designing of pas

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Hromakina, T. A., I. N. Belskaya, Yu N. Krugly, et al. "Long-term photometric monitoring of the dwarf planet (136472) Makemake." Astronomy & Astrophysics 625 (May 2019): A46. http://dx.doi.org/10.1051/0004-6361/201935274.

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Aims. We studied the rotational properties of the dwarf planet Makemake. Methods. The photometric observations were carried out at different telescopes between 2006 and 2017. Most of the measurements were acquired in BVRI broad-band filters of a standard Johnson-Cousins photometric system. Results. We found that Makemake rotates more slowly than was previously reported. A possible lightcurve asymmetry suggests a double-peaked period of P = 22.8266 ± 0.0001 h. A small peak-to-peak lightcurve amplitude in R-filter A = 0.032 ± 0.005 mag implies an almost spherical shape or near pole-on orientatio

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Farokhipour, Ehsan, Mohammad Mehrabi, Nader Komjani, and Can Ding. "A Spoof Surface Plasmon Polaritons (SSPPs) Based Dual-Band-Rejection Filter with Wide Rejection Bandwidth." Sensors 20, no. 24 (2020): 7311. http://dx.doi.org/10.3390/s20247311.

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This paper presents a novel single-layer dual band-rejection-filter based on Spoof Surface Plasmon Polaritons (SSPPs). The filter consists of an SSPP-based transmission line, as well as six coupled circular ring resonators (CCRRs) etched among ground planes of the center corrugated strip. These resonators are excited by electric-field of the SSPP structure. The added ground on both sides of the strip yields tighter electromagnetic fields and improves the filter performance at lower frequencies. By removing flaring ground in comparison to prevalent SSPP-based constructions, the total size of th

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Wang, Yasi, Mengjie Zheng, Qifeng Ruan, et al. "Stepwise-Nanocavity-Assisted Transmissive Color Filter Array Microprints." Research 2018 (September 2, 2018): 1–10. http://dx.doi.org/10.1155/2018/8109054.

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Visible-light color filters using patterned nanostructures have attracted much interest due to their various advantages such as compactness, enhanced stability, and environmental friendliness compared with traditional pigment or dye-based optical filters. While most existing studies are based on planar nanostructures with lateral variation in size, shape, and arrangement, the vertical dimension of structures is a long-ignored degree of freedom for the structural colors. Herein, we demonstrate a synthetic platform for transmissive color filter array by coordinated manipulations between height-v

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Rocha, Sandra Mara Santana, and Luiz Gustavo Martins Vieira. "Experimental Determination of the Permeability of Non-Porous Planar Structures during Operation of Equipment in Own Industrial Unit." Materials Science Forum 727-728 (August 2012): 1836–41. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.1836.

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The permeability is a physical property related to porous structures. It is a physical quantity that quantifies the resistance that a permeable matrix has to the flow of a particular fluid. Knowledge of the permeability of a filter media is important for the design, optimization and operation of various equipment, such as fabric filters, sedimentary, filtering hydrocyclones and others. There is the routine that the experimental determination of permeability of a filter medium is not made during the operation of industrial equipment, because they require a specific instrumentation or because it

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Belyaev, B. А., V. V. Tyurnev, G. V. Skomorokhov, S. M. Zharkov, A. M. Serzhantov, and D. A. Shabanov. "Third-order optical bandpass filters based on structures of alternating layers of quartz and silver." Doklady Rossijskoj akademii nauk. Fizika, tehničeskie nauki 516, no. 1 (2024): 73–80. https://doi.org/10.31857/s2686740024030119.

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Designs of optical bandpass filters have been developed on planar structures, which were obtained by vacuum deposition onto quartz glass (SiO2) substrates of three layers also of quartz, which are half-wavelength resonators separated from each other, from free space, and from the substrate by four layers of silver (Ag). The thicknesses of the Ag and SiO2 layers were determined based on the given parameters of the filter passband by parametric synthesis of one-dimensional models using electrodynamic analysis. In this case, experimental frequency dependences of the real and imaginary parts of th

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Gostar, Amirali, Chunyun Fu, Weiqin Chuah, et al. "State Transition for Statistical SLAM Using Planar Features in 3D Point Clouds." Sensors 19, no. 7 (2019): 1614. http://dx.doi.org/10.3390/s19071614.

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There is a large body of literature on solving the SLAM problem for various autonomous vehicle applications. A substantial part of the solutions is formulated based on using statistical (mainly Bayesian) filters such as Kalman filter and its extended version. In such solutions, the measurements are commonly some point features or detections collected by the sensor(s) on board the autonomous vehicle. With the increasing utilization of scanners with common autonomous cars, and availability of 3D point clouds in real-time and at fast rates, it is now possible to use more sophisticated features ex

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Mohamed, Mohamed, and Noha Saleh. "Comparison between Kalman Filter and Adaptive Filter." International Journal for Scientific Research 3, no. 7 (2024): 358–85. http://dx.doi.org/10.59992/ijsr.2024.v3n7p15.

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This study contains a comparison between the two Kalman filter and adaptive filter has huge importance because of it is uses in different applications such as air navigation planes, satellites, cameras, motions, radar, stations. Adaptive filter has various Application as well and important in CCTV and microphones.

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Хобзей, Микола, Михайло Апостолюк, Владислав Ткач, and Дмитро Вовчук. "Ring Resonators-Based Adjustable Bandpass Filter for Microwave Application." Security of Infocommunication Systems and Internet of Things, no. 1 (June 30, 2023): 01001. http://dx.doi.org/10.31861/sisiot2023.1.01001.

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The paper presents the principle of a microwave adaptive band-pass filter based on the cascade of ring resonators. The filter is performed as a planar microstrip technology with thickness of around 1 mm to ensure compactness of the device. The ring resonators, being a part of metamaterials, can be considered as an equivalence of an oscillator and is conventionally used in the microwaves. While a quite number of the filters with predefined parameters are well-known, the adaptive filters the throughput and output characteristics of which can be adjusted depending on the input ones is the topical

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Inclán-Sánchez, Luis. "Inverted Microstrip Gap Waveguide Coplanar EBG Filter for Antenna Applications." Electronics 11, no. 18 (2022): 2951. http://dx.doi.org/10.3390/electronics11182951.

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The possibility of making compact stopband filters using coplanar-coupled EBG resonators in inverted microstrip gap waveguide technology is studied in this work. To do this, the filtering characteristics of different configurations of mushroom-type elements are shown in which the short-circuit element is placed on the edge of the resonator’s patch. The behavior of the structure as well as its main advantages such as: low losses, self-packaging, low level of complexity, flexibility and easy design are illustrated in the paper. To evaluate the possibility of integrating these structures in gap w

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Huang, Xiaolong, and Zheng Liu. "Low-Cost W-Band Dual-Mode SIW Bandpass Filters Using Commercially Available Printed-Circuit-Board Technology." Electronics 12, no. 17 (2023): 3624. http://dx.doi.org/10.3390/electronics12173624.

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W-band filters play a crucial role in modern millimeter-wave communication and radar systems, finding applications in 5G/6G networks, automotive radar, and passive imaging. With the growing demand for higher data rates and efficient wireless communication, W-band filter development has gained significant attention in recent years. Various design techniques and fabrication technologies have been explored for improved performance and integration possibilities. This paper presents a planar substrate-integrated waveguide (SIW) dual-mode cavity filter as a solution to the challenges faced by previo

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Nurjihan, Shita Fitria, and Yenniwarti Rafsyam. "Ultra-Wideband Microstrip Bandpass Filter and Its Equivalent Circuit." IJITEE (International Journal of Information Technology and Electrical Engineering) 5, no. 2 (2021): 52. http://dx.doi.org/10.22146/ijitee.65695.

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Microstrip filters can be designed with various methods to obtain good performances, such as defected ground structure, open-ended slot, planar edge coupled, and split ring resonator with groundplane windowing. In this paper, the design of an ultra-wideband microstrip bandpass filter used the defected ground structure (DGS) method by adding a circular slot to the groundplane. The addition of the circular slot was carried out to improve the value of S parameter (return loss and insertion loss) from the initial filter design without a circular slot. In the simulation process, optimization was ca

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Gómez, Darío, Héctor Esteban, Angel Belenguer, Vicente Boria, and Alejandro Borja. "Stop Band Continuous Profile Filter in Empty Substrate Integrated Coaxial Line." Applied Sciences 8, no. 11 (2018): 2176. http://dx.doi.org/10.3390/app8112176.

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Substrate integrated waveguides reduce the losses and increase the quality factor of resonators in communication filters when compared with traditional planar technologies, while maintaining their low-cost and low-profile characteristics. Empty substrate integrated waveguides go one step further, removing the dielectric of the substrate. One of these transmission lines is the empty substrate integrated coaxial line (ESICL), which has the advantage of being a two-conductor structure. Thus, it propagates a transversal electric and magnetic (TEM) mode, which reduces the dispersion and the bandwid

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Holdengreber, Eldad, Moshe Mizrahi, Noy Citron, Shmuel E. Schacham, and Eliyahu Farber. "Very Low-Noise Figure HTSC RF Front-End." Electronics 11, no. 8 (2022): 1270. http://dx.doi.org/10.3390/electronics11081270.

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A very low noise figure radio frequency (RF) front-end for the cellular realm is presented. The front-end is composed of two planar YBCO high critical temperature superconductor (HTSC) bandpass filters (BPFs) and a low temperature, low noise amplifier. Using advanced HTSC growth techniques, 8-pole hairpin BPFs are implemented in a YBCO thin film grown on both sides of a sapphire substrate. The front-end is designed and implemented based on the optimal configuration of the filters derived from advanced electromagnetic simulations. Measured performance at 77 K shows a high-frequency response and

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James, Christopher, and Robert N. Dean. "Improved RF Metamaterial Band-Pass Filter Design Using CSRR Structures on LCP Substrate." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2015, DPC (2015): 001016–47. http://dx.doi.org/10.4071/2015dpc-tp61.

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In the past decade, the emergence of man-made structures with unusual electromagnetic properties not seen in nature—commonly known as “metamaterials”—has generated much interest in designing filters, antennas, lenses, and other devices based on negative values of permittivity (ε) and permeability (μ). Manipulating negative values of these electromagnetic parameters has found applications in communication technology and cloaking research by taking advantage of interesting phenomena such as a negative index of refraction and the reverse Doppler Effect. RF and microwave filters with different fre

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Hong, Jia-sheng. "Reconfigurable planar filters." IEEE Microwave Magazine 10, no. 6 (2009): 73–83. http://dx.doi.org/10.1109/mmm.2009.933590.

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