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International Journal of RF and Microwave Computer-Aided Engineering, 2014 Xiaoguo Huang, Quanyuan Feng, Lei Zhu
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Tunable Diplexer With Identical Passband and Constant Absolute Bandwidth
IEEE Transactions on Microwave Theory and Techniques, 2020Frequency-adaptive bandpass diplexer (FA-BPD) with constant absolute bandwidths (ABWs) and two identical passbands at every state is the most useful duplexing tunable filter for the smart frequency-division duplex (FDD) system. However, it is widely considered a challenge.
Zhiyou Li, Xiaohong Tang, Di Lu, Ming Yu
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A method to design lumped-element tunable bandpass filters with constant absolute bandwidth
2014 44th European Microwave Conference, 2014 Dmitry Kholodnyak +2 more
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Tunable bandpass filters with constant absolute bandwidth cascaded trisection topology
Journal of Electromagnetic Waves and Applications, 2021A novel cascade trisection (CT) coupling structure, based on half-wavelength resonators, is proposed for designing constant absolute bandwidth (CABW) tunable bandpass filters.
JingJing Yang +4 more
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A Tunable Bandpass Filter with Constant Absolute Bandwidth
Journal of Electromagnetic Waves and Applications, 2011A novel tunable bandpass filter with constant absolute bandwidth is presented in this paper. Introducing a mixed electric and magnetic coupling structure and a new external coupling scheme, nearly constant absolute bandwidth is maintained across the tuning range. Theoretical analysis and design approach are demonstrated. The proposed filter is designed
B. Liu, F. Wei, Q. Y. Wu, X. W. Shi
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Design of Tunable Coaxial Bandpass Filters With Constant Absolute Bandwidth Using One Tuning Element
IEEE Transactions on Circuits and Systems II: Express Briefs, 2023 Jun-Jie Yan +3 more
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A constant absolute bandwidth filter with dual independent tunable passbands
2014 IEEE International Wireless Symposium (IWS 2014), 2014This paper presents a novel procedure to the design of independent tunable dual-band bandpass filters with constant absolute 3-dB bandwidths. Only two bias voltages are required to control the locations of the passbands, respectively. Two kinds of dual-mode resonators are proposed to be selected while designing the passbands.
Dinghong Jia +3 more
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Tunable S-band Elliptic Bandpass Filter With Constant Absolute Bandwidth
2021 IEEE 21st Annual Wireless and Microwave Technology Conference (WAMICON), 2021This paper presents a tunable bandpass filter in the S band. The proposed design cascades a 5th order elliptic low-pass filter (LPF) and a 5th order elliptical high-pass filter (HPF) to achieve the desired bandpass behavior. The absolute bandwidth of this design is determined by the resonance frequencies (transmission zeros) of the shunt series LC ...
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Constant absolute bandwidth UHF tunable filter using RF MEMS
2012 42nd European Microwave Conference, 2012This paper presents the design and the performances of a tunable UHF filter that uses MEMS capacitors arrays. Central frequency of the filter varies from 278 to 385 MHz and can be adjusted by actuating a desired number of MEMS. Thanks to a specific topology and well-chosen input and output tank circuits, the absolute bandwidth varies from 13 to 14 MHz ...
G. Nicolini +7 more
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A 2.285–3.195 GHz electrical tunable bandstop filter with constant absolute bandwidth
2014 IEEE International Wireless Symposium (IWS 2014), 2014 Qianyin Xiang +3 more
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