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Journal articles on the topic 'Dual-band bandpass filter'

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Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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1

Zhang, Yuming, and Barry Spielman. "Extended Composite Right/Left-Handed Transmission Line and Dual-Band Reactance Transformation." Journal of Electrical and Computer Engineering 2010 (2010): 1–5. http://dx.doi.org/10.1155/2010/303864.

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An extended composite right/left-handed transmission line is introduced, and its dual-band bandpass filter characteristics are explored. Novel reactance transformations, derived from this transmission line, are formulated to transform a low-pass prototype filter into a dual-band bandpass filter with arbitrary dual pass bands, well-defined in-band attenuation ripples, and high out-of-band rejection. The physical insight into such a dual-band bandpass filter is provided with a dispersion analysis. The transformations are verified by simulated results for dual-band bandpass filters.

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2

Liang, Chen, Yun Liu, and Fanbin Tai. "Compact Bandpass Filters Using Folded Quad-Mode Stub-Loaded Loop Resonators." Applied Computational Electromagnetics Society 35, no. 10 (December 8, 2020): 1217–21. http://dx.doi.org/10.47037/2020.aces.j.351015.

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Folded quad-mode stub-loaded loop resonators (QMSLLRs) are proposed for realizing both bandpass and dual-band bandpass filters with compact dimensions. The QMSLLR is a folded square loop loaded with four short stubs, providing structure symmetry in both transversal and longitudinal directions. Determined by the lengths of the loaded stubs, the four resonant frequencies as analyzed with even-odd mode method can be either distributed in one passband with equal space, or in two passbands with a guard band in between, for realizing a single-band bandpass filter or a dual-band bandpass filter, respectively. For both the input and output couplings, two perpendicular feeding lines are parallel coupled to the QMSLLR at one corner. The measure results prove that the structure is suitable for the design of a medium band or even narrow band bandpass filters with compact dimensions.

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3

Ko, Wen, Man Long Her, Ming Wei Hsu, and Yu Lin Wang. "A Reconfigurable Compact Coupled Line Multiple-Band Bandpass Filter." Advanced Materials Research 655-657 (January 2013): 1555–61. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1555.

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This study proposes a circuit structure with reconfigurable multiple bands bandpass filter. This circuit can provide a triple-band or dual-band bandpass facility by adjusting two open stubs (L6 and L7) location. The circuit design used three sections of transmission line in series, the two sets of the coupled lines connected to the gap in each transmission line, and two open stubs in the appropriate locations. The design and manufacturing of the circuit structure is innovative and simple. The center frequencies of the triple-band bandpass filter are set at 2.4, 4.2, and 6.5 GHz, respectively, while the center frequencies of the dual-band bandpass filter are the two lower pass band of the triple-band bandpass filter at 2.4 and 4.2GHz. The filters were simulated using the full-wave electromagnetic simulator, IE3D, and measured by Anritsu-37269D. The simulated and measured results show good agreement in the frequency of interest.

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4

Hsu, Ming Wei, Man Long Her, Wen Ko, and Yu Lin Wang. "Design and Analysis of Dual-Mode Double-Ring Resonator for Dual-Band Bandpass Filter Applications." Applied Mechanics and Materials 321-324 (June 2013): 376–82. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.376.

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In this paper, two types of miniaturized dual-mode bandpass filters (BPF), a single-ring (SR) resonator, and a double-ring (DR) resonator are developed. By applying the capacitive-coupling technique to a dual-mode ring filter, a technique is proposed to miniaturize the dual-mode double-ring filter. An adjustable dual-band bandpass filter is achieved by developing a ring resonator where the two modes are capacitively coupled. Control of the filter center frequency is determined by the diameter of the ring and by the rings annular width. Filter coupling amount can also be adjusted by disturbance (perturbation) of an open stub attached to the annular disc. Proposed filters explore both single- and double-ring architectures. A single-ring resonator acting as a dual bandpass filter to allow 3.8 GHz and 7.8 GHz single is developed. A double-ring resonator to allow 2.05 GHz and 3.9 GHz signals is also developed. The ring resonators are fabricated on RO-4003 substrate, with relative dielectric constant of 3.38, thickness of 0.8 mm, and dielectric loss tangent of 0.0025. Results indicate the filters can be applied in the communications field.

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5

Sun, Xiaofeng, and Eng Leong Tan. "Novel dual-band dual-prototype bandpass filter." Microwave and Optical Technology Letters 56, no. 6 (March 18, 2014): 1496–98. http://dx.doi.org/10.1002/mop.28325.

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6

Chang, Wei-Chung, and Wen-Hua Tu. "Dual-band bandpass filter for software defined radio and 5G." International Journal of Microwave and Wireless Technologies 12, no. 7 (June 11, 2020): 629–34. http://dx.doi.org/10.1017/s175907872000080x.

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AbstractThis paper presents the filter design in the student design competition of EuMW 2019. This contest motivates students for the design and implementation of a dual-band bandpass filter able to get outstanding performance, where different implementation technologies, such as microstrip, coplanar, multilayer microstrip, substrate integrated waveguide, and some others can be effectively employed. Filters are evaluated by considering a figure of merit (FoM) defined by the insertion loss level, selectivity, spurious-free response, and size. To this end, three viable dual-band bandpass filters with different feeding technologies, resonators, and design topologies are investigated for the optimal FoM.

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7

Malherbe, J. A. G. "An asymmetrical dual band bandpass filter." Microwave and Optical Technology Letters 59, no. 1 (November 24, 2016): 163–68. http://dx.doi.org/10.1002/mop.30255.

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8

Joshi, Himanshu, and William J. Chappell. "Dual-Band Lumped-Element Bandpass Filter." IEEE Transactions on Microwave Theory and Techniques 54, no. 12 (December 2006): 4169–77. http://dx.doi.org/10.1109/tmtt.2006.885576.

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9

Cui, Chenwei, and Yun Liu. "Quad‐band bandpass filter design by embedding dual‐band bandpass filter with dual‐mode notch elements." Electronics Letters 50, no. 23 (November 2014): 1719–20. http://dx.doi.org/10.1049/el.2014.2732.

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10

Ko, Wen, Man Long Her, Yu Lin Wang, and Ming Wei Hsu. "Dual-Band BPF Using Simple SIR Structure." Advanced Materials Research 655-657 (January 2013): 1614–18. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1614.

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This paper studies a very simple structure for dual-band bandpass filter. Filter is composed of two asymmetric coupled resonator circuit by two sets of different size stepped impedance resonator. This circuit applied microstrip line, coupling principle and impedance ratio by controlling the stepped impedance resonator to control the center frequency 2.6/5.2 GHz of the first and the second bandpass filter. The basic structure of the filter is constituted by the three sections of transmission line and two sets of SIR, that is, in two gaps of the three sections of transmission line parallel connection the equivalent inductances and capacitor of the two sets of SIR in series with the resonant circuit (LCL) to constitute bandpass filter. The low frequency 2.6 GHz is through the upper half of low impedance SIR, and the high frequency 5.2 GHz is through the lower half of high impedance SIR. This paper presents the design of asymmetric SIR-based dual-band bandpass filter, the filter structure is simple, easy to produce and can control the characteristics of the passband center frequency. By electromagnet simulation software( IE3D ) to simulate, the actual production of the circuit using a vector analyzer measurement, simulation and measurement results show good consistency.

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11

S., Karthie, and Salivahanan S. "Fractal-based triangular bandpass filter with a notched band for interference rejection in wideband applications." Circuit World 45, no. 3 (August 5, 2019): 141–47. http://dx.doi.org/10.1108/cw-06-2018-0045.

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Purpose This paper aims to present the design of a novel triangular-shaped wideband microstrip bandpass filter implemented on a low-cost substrate with a notched band for interference rejection. Design/methodology/approach The conventional dual-stub filter is embedded with simple fractal-based triangular-circular geometries through various iterations to reject wireless local area network (WLAN) signals with a notched band at 5.8 GHz. Findings The filter covers a wide frequency band from 3.1 to 8.8 GHz and has a fractional bandwidth of 98 per cent with the lower passband of 57.5 per cent and upper passband of 31.6 per cent separated by a notched band at 5.8 GHz. The proposed wideband prototype bandpass filter is fabricated in FR-4 substrate using PCB technology and the simulation results are validated with measurement results which include insertion loss, return loss and group delay. The fabricated filter has a sharp rejection of 28.3 dB at 5.8 GHz. Measured results show good agreement with simulated responses. The performance of the fractal-based wideband filter is compared with other wideband bandpass filters. Originality/value In the proposed work, a fractal-based wideband bandpass filter with a notched band is reported. The conventional dual-stub filter is deployed with triangular-circular geometry to design a wideband filter with a notched band to suppress interference signals at WLAN frequency. The proposed wideband filter exhibits smaller size and better interference rejection compared to other wideband bandpass filter designs implemented on low-cost substrate reported in the literature. The aforementioned wideband filter finds application in wideband wireless communication systems.

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12

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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13

Gao, Shan Shan, Jia-Lin Li, Zhe Lin Zhu, Jia Li Xu, and Yong Xin Zhao. "Dual-mode resonator filter with improved feed-lines for dual-band applications." Journal of Electrical Engineering 71, no. 6 (December 1, 2020): 433–35. http://dx.doi.org/10.2478/jee-2020-0060.

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Abstract An improved feedline configuration for dual-mode resonator filter is investigated in this paper. Based on the introduced topology, a dual-mode dual-band bandpass filter with center frequencies of 1.8 and 2.4 GHz is optimally designed, fabricated and tested. The introduced dual-band bandpass filter has simple structure and enables high selectivity to be realized due to two pairs of transmission zeros located near to the lower and upper passband, respectively. Both measured and simulated performances are presented with good consistency.

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14

Fahmy, Walid, Asmaa Farahat, Khalid Hussein, and Abd-El-Hadi Ammar. "Dual-Band Bandpass Filter Optimized for High Q-Factor." Applied Computational Electromagnetics Society 36, no. 4 (May 10, 2021): 398–410. http://dx.doi.org/10.47037/2020.aces.j.360405.

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High quality factor bandpass filters based on a number of cascaded resonators of dual-resonance mechanism are proposed in the present paper. Each resonator is constructed as two overlapped coplanar waveguide (CPW) resonant structures. The cascaded resonators mediate microwave coupling between two isolated corner-shaped CPW feeders only at the resonant frequencies leading to a bandpass filter of high quality factor. The two resonant frequencies and the separation between them can be fine-tuned by the dimensions of the structure. The effects of the dimensional parameters of the resonator and the feeding CPW regions on the resonant frequencies and the performance of the bandpass filter are investigated. The effect of the loss tangent of the dielectric substrate material on the quality factors at the two resonant frequencies is studied. Three prototypes of the proposed filter are fabricated and experimentally studied for more understanding of the underlying physical principles of operation and for verifying some of the simulation results. The experimental results show good agreement when compared with the corresponding simulation results. It is shown that, at low enough absolute temperature, the proposed structure can operate as superconducting microwave resonator when made from the appropriate materials. Also, it is shown that an optimized design of the proposed bandpass filter, based on superconducting CPWR structure, can achieve quality factors high enough to form a quantum data bus for hybrid architecture of quantum information systems.

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15

Lee, Jahyeon, and Yeongseog Lim. "Dual-band bandpass filter using dual-mode resonators." Microwave and Optical Technology Letters 53, no. 11 (August 19, 2011): 2515–17. http://dx.doi.org/10.1002/mop.26355.

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16

Hua, Changzhou, Chen Miao, Jin Xu, Hui Wang, and Wen Wu. "A dual-band bandpass filter based on dual-band DBR." Microwave and Optical Technology Letters 53, no. 4 (February 22, 2011): 731–34. http://dx.doi.org/10.1002/mop.25822.

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17

Heng, Yong, Xubo Guo, Bisong Cao, Bin Wei, Xiaoping Zhang, Guoyong Zhang, and Xiaoke Song. "Compact superconducting dual‐band bandpass filter by combining bandpass and bandstop filters." Electronics Letters 49, no. 19 (September 2013): 1230–32. http://dx.doi.org/10.1049/el.2013.2429.

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18

Pan, Wei-Qiang, Xiao-Lan Zhao, Yao Zhang, and Jin-Xu Xu. "High Selectivity Dual-Band Bandpass Filter with Tunable Lower Passband." International Journal of Antennas and Propagation 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/762504.

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This paper presents a novel method to design dual-band bandpass filters with tunable lower passband and fixed upper passband. It utilizes a trimode resonator with three controllable resonant modes. Discriminating coupling is used to suppress the unwanted mode to avoid the interference. Varactors are utilized to realize tunable responses. The bandwidth of the two bands can be controlled individually. Transmission zeros are generated near the passband edges, resulting in high selectivity. For demonstration, a tunable bandpass filter is implemented. Good agreement between the prediction and measurement validates the proposed method.

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19

Vegesna, Subash, and Mohammad A. Saed. "NOVEL COMPACT DUAL-BAND BANDPASS MICROSTRIP FILTER." Progress In Electromagnetics Research B 20 (2010): 245–62. http://dx.doi.org/10.2528/pierb10012210.

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20

Guo, Yu, Kexue Sun, Xiaozhou Liu, Haodong Wu, Guojun Wang, and Guann-Pyng Li. "A compact configurable dual-band bandpass filter." IEICE Electronics Express 12, no. 23 (2015): 20150931. http://dx.doi.org/10.1587/elex.12.20150931.

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21

Cheng, F., X. Q. Lin, X. X. Liu, K. J. Song, and Y. Fan. "A compact dual-band bandpass SIW filter." Journal of Electromagnetic Waves and Applications 27, no. 3 (November 20, 2012): 338–44. http://dx.doi.org/10.1080/09205071.2013.745387.

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22

Jia, Dinghong, Jianqin Deng, Yangping Zhao, and Ke Wu. "Multilayer SIW Dual-Band Filters with Independent Band Characteristics and High Selectivity." Frequenz 73, no. 9-10 (September 25, 2019): 293–300. http://dx.doi.org/10.1515/freq-2019-0024.

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Abstract This work presents an approach to developing dual-mode dual-band substrate integrated waveguide (SIW) bandpass filter based on multilayer process. TE102/TE201 and TE101/TE102 modes are used to feature the two passbands, respectively. To begin with, large range of band location ratios are decided by the effective dimension of the SIW resonator. With reference to the field distribution, independent coupling schemes of the dual-modes are then realized by slots or circular apertures etched on the middle metal layer. It allows to not only introduce a large design freedom of bandwidth but also keep compactness. Finally, source-load and mixed couplings are deployed to produce transmission zeros around the passband in providing a sharp selectivity in the two filters, respectively. The details to independently control the center frequencies and bandwidth of two passbands are also presented. A two-order double-layered and a triple-layered SIW dual-band bandpass filter are prototyped to evaluate the proposed design approach, respectively. Results show a good agreement between simulations and measurements. The proposed filter exhibits flexible design freedom, high selectivity as well as good out-of-band rejection.

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23

Stefanovski, Snežana, Milka Potrebić, Dejan Tošić, and Zoran Stamenković. "Compact Dual-Band Bandpass Waveguide Filter with H-Plane Inserts." Journal of Circuits, Systems and Computers 25, no. 03 (December 28, 2015): 1640015. http://dx.doi.org/10.1142/s0218126616400156.

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A novel compact dual-band bandpass waveguide filter is presented in this paper. H-plane metal inserts with complementary split-ring resonators are implemented as resonating elements in the standard (WR-90) rectangular waveguide. Design starts from the models of the waveguide resonators with two resonant frequencies (9[Formula: see text]GHz and 11[Formula: see text]GHz) using a single flat or folded metal insert. Further, folded inserts are used for the second-order dual-band filter design. The equivalent circuits are proposed for the considered waveguide resonators and filter. A good agreement of the amplitude responses obtained for three-dimensional electromagnetic models and microwave circuits is achieved. Finally, compact dual-band bandpass waveguide filter is proposed as a novel solution using miniaturized inverters for both central frequencies. Compact filter model is further modified in order to obtain solution customized for easier fabrication. For the compact filter model, amplitude response is experimentally verified. The required filter response is preserved, as verified by a good agreement of the results obtained for the original dual-band filter and for the compact filter solutions.

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24

Jin, Yu-Ting, Li-Ming Si, Qing-Le Zhang, Yu-Ming Wu, and Xin Lv. "Dual-band bandpass filter using composite metamaterial resonator." Modern Physics Letters B 30, no. 07 (March 20, 2016): 1650079. http://dx.doi.org/10.1142/s0217984916500792.

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A dual-band bandpass filter at X-band is proposed using composite metamaterial resonator consisting of an outer square closed-ring resonator (SCRR) and two inner electric inductance–capacitance (ELC) resonators. Numerical simulation and microwave measurement reveal that the filter exhibits two passbands centered at 8.76 GHz and 11.04 GHz, with 3 dB bandwidths of 130 MHz and 290 MHz, respectively. The complex dispersion relation of the filter is further derived based on the effective medium theory, where two balanced composite right-/left-handed bands are found, i.e. lines exhibiting two left-handed and two right-handed bands alternating. The proposed filter may find useful in dual-band or multi-band wireless communication systems.

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25

Atallah, H. A. "Dual Band Filter-Antenna with Fixed Low Band and Frequency-Agile High Band for Wireless Communications." Advanced Electromagnetics 9, no. 1 (March 21, 2020): 65–69. http://dx.doi.org/10.7716/aem.v9i1.1272.

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This work proposes a design of compact filter-antenna with fixed and frequency-agile bands for wireless communications and cognitive radio (CR) systems. The filter-antenna is realized by attaching a bandpass filter with an independent fixed band and a tunable band to a UWB antenna. The dual bandpass filter consists of a folded open loop resonator loaded with single varactor diode at a suitable location to achieve reconfigurability operations for the high band while the low band remains fixed at 4.5 GHz. A reconfigurable broadband frequency range of 3.2 GHz from 7.8 to 4.6 GHz is achieved for the high band by changing the capacitance of the varactor from 0.16 to 2.25 pF, respectively. A prototype of the filter-antenna is fabricated and measured at a selected capacitance of 0.6 pF to verify the simulation results. Good agreements between simulated and measured results are obtained.

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26

Liu, Guo Gao, and Li Tian. "A Novel Bandpass Filter Using Asymmetric Open Stub-Loaded SIRs." Applied Mechanics and Materials 198-199 (September 2012): 1720–25. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1720.

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A novel microstrip bandpass filter using stepped impedance resonators (SIRs) with asymmetric open stub-loaded is proposed in this paper. The filter uses asymmetric open stubs as capacitive loads, resulting in higher-order spurious frequencies suppression and wider upper stopband. Compared with the traditional filter based on stepped impedance resonators at the same design frequency of 2.4 GHz, the proposed filter can significantly reduce the circuit size of 45 %. By changing the geometric dimensions of the asymmetric open stub-loaded SIRs, which can achieve single-band bandpass filter at the centre frequency of 3.5 GHz and dual-band bandpass filter at the centre frequency of 2.4/3.5 GHz.

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27

Omar, A. A., O. H. Abu Safia, and M. C. Scardelletti. "Design of dual-band bandpass coplanar waveguide filter." International Journal of Electronics 98, no. 3 (March 2011): 311–22. http://dx.doi.org/10.1080/00207217.2010.538900.

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28

Cheng-Chung Chen. "Dual-band bandpass filter using coupled resonator pairs." IEEE Microwave and Wireless Components Letters 15, no. 4 (April 2005): 259–61. http://dx.doi.org/10.1109/lmwc.2005.845735.

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29

Huang, Guo-Shu, and Chun Hsiung Chen. "Dual-Band Balun Bandpass Filter With Hybrid Structure." IEEE Microwave and Wireless Components Letters 21, no. 7 (July 2011): 356–58. http://dx.doi.org/10.1109/lmwc.2011.2144965.

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30

Tang, Ching-Wen, and Po-Hsien Wu. "Design of a Planar Dual-Band Bandpass Filter." IEEE Microwave and Wireless Components Letters 21, no. 7 (July 2011): 362–64. http://dx.doi.org/10.1109/lmwc.2011.2151849.

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31

Wang, Jianpeng, Yong-Xin Guo, Bing-Zhong Wang, and L. C. Ong. "High selective stepped-impedance dual-band bandpass filter." Microwave and Optical Technology Letters 48, no. 10 (2006): 1964–66. http://dx.doi.org/10.1002/mop.21831.

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32

Ho, Ka-Meng, Hoi-Kai Pang, and Kam-Weng Tam. "Dual-band bandpass filter using defected ground structure." Microwave and Optical Technology Letters 48, no. 11 (2006): 2259–61. http://dx.doi.org/10.1002/mop.21929.

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33

Mohan, Akhilesh, and Animesh Biswas. "Dual-band bandpass filter using defected ground structure." Microwave and Optical Technology Letters 51, no. 2 (December 23, 2008): 475–79. http://dx.doi.org/10.1002/mop.24067.

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34

Girbau, David, Antonio Lázaro, Esther Martínez, Diego Masone, and Lluís Pradell. "Tunable dual-band bandpass filter for WLAN applications." Microwave and Optical Technology Letters 51, no. 9 (June 19, 2009): 2025–28. http://dx.doi.org/10.1002/mop.24550.

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35

Feng, Li-Ying, Hong-Xing Zheng, Cheng-Guang Sun, and Dan Cheng. "Dual-band bandpass filter with tunable upper passband." Microwave and Optical Technology Letters 53, no. 4 (February 22, 2011): 888–90. http://dx.doi.org/10.1002/mop.25866.

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36

Wang, Xiao-Hua, Quan Xue, and Kim Fung Man. "New dual-band bandpass filter with resistance load." Microwave and Optical Technology Letters 53, no. 7 (April 22, 2011): 1472–75. http://dx.doi.org/10.1002/mop.26030.

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37

Wang, J., Y. X. Guo, B. Z. Wang, L. C. Ong, and S. Xiao. "High-selectivity dual-band stepped-impedance bandpass filter." Electronics Letters 42, no. 9 (2006): 538. http://dx.doi.org/10.1049/el:20064491.

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38

Dai, G. L., and M. Y. Xia. "Design of compact dual-band switchable bandpass filter." Electronics Letters 45, no. 10 (2009): 506. http://dx.doi.org/10.1049/el.2009.0601.

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39

Gao, S., Z. Y. Xiao, and W. F. Chen. "Dual-band bandpass filter with source-load coupling." Electronics Letters 45, no. 17 (2009): 894. http://dx.doi.org/10.1049/el.2009.1656.

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40

Mo, Yuxia, Kaijun Song, Pan Tao, and Yong Fan. "Miniaturised dual‐band bandpass filter using modified SIR." Electronics Letters 49, no. 14 (July 2013): 888–90. http://dx.doi.org/10.1049/el.2013.0869.

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41

Xu, Xin, Jianpeng Wang, and Gang Zhang. "60 GHz dual‐band bandpass filter using LTCC." Electronics Letters 49, no. 16 (August 2013): 1001–2. http://dx.doi.org/10.1049/el.2013.1167.

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42

Hammood, Dhuha G., and Raaed T. Hammed. "Performance Enhancement of Miniaturized Dual-Band Bandpass Filter." IOP Conference Series: Materials Science and Engineering 1076, no. 1 (February 1, 2021): 012049. http://dx.doi.org/10.1088/1757-899x/1076/1/012049.

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43

Kuo, Jen-Tsai, and Shih-Wei Lai. "NEW DUAL-BAND BANDPASS FILTER WITH WIDE UPPER REJECTION BAND." Progress In Electromagnetics Research 123 (2012): 371–84. http://dx.doi.org/10.2528/pier11112304.

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44

Kim, Kyoung-Keun, Ja-Hyeon Lee, and Yeong-Seog Lim. "Compact Dual-Band Bandpass Filter Using Two Dual-Mode Resonators." Journal of Korean Institute of Electromagnetic Engineering and Science 21, no. 12 (December 31, 2010): 1447–53. http://dx.doi.org/10.5515/kjkiees.2010.21.12.1447.

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45

Lee, Ja-Hyeon, and Yeong-Seog Lim. "Design of Dual-Band Bandpass Filter Using Dual-Mode Resonators." Journal of Korean Institute of Electromagnetic Engineering and Science 22, no. 2 (February 28, 2011): 252–57. http://dx.doi.org/10.5515/kjkiees.2011.22.2.252.

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46

Wattikornsirikul, Natchayathorn, and Montree Kumngern. "DUAL-MODE DUAL-BAND BANDPASS FILTER WITH ASYMMETRICAL TRANSMISSION ZEROS." Progress In Electromagnetics Research M 86 (2019): 193–202. http://dx.doi.org/10.2528/pierm19090101.

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47

Wei, F., L. Chen, and X. W. Shi. "Compact dual-mode dual-band bandpass filter with wide stopband." Journal of Electromagnetic Waves and Applications 26, no. 11-12 (July 10, 2012): 1441–47. http://dx.doi.org/10.1080/09205071.2012.701575.

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48

Chen, J. X., T. Y. Yum, J. L. Li, and Q. Xue. "Dual-Mode Dual-Band Bandpass Filter Using Stacked-Loop Structure." IEEE Microwave and Wireless Components Letters 16, no. 9 (September 2006): 502–4. http://dx.doi.org/10.1109/lmwc.2006.880705.

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Baik, J. W., S. Pyo, W. S. Yoon, and Y. S. Kim. "Dual-mode dual-band bandpass filter for single substrate configuration." Electronics Letters 45, no. 19 (2009): 982. http://dx.doi.org/10.1049/el.2009.1277.

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Liu, H. W., L. Shen, Z. C. Zhang, J. S. Lim, and D. Ahn. "Dual-mode dual-band bandpass filter using defected ground waveguide." Electronics Letters 46, no. 13 (2010): 895. http://dx.doi.org/10.1049/el.2010.1034.

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