Results 211 to 220 of about 186,285 (262)
2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC), 2020 In this paper, a novel design method for reconfigurable bandpass filter with constant absolute bandwidth based on neural network is proposed. This method allows designing bandpass filters with tunable central frequency and constant absolute bandwidth.
Hao Du
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IEEE Transactions on Circuits and Systems II: Express Briefs, 2021 An RF input-quasi-reflectionless bandpass filter (BPF) with reconfigurable center frequency and constant absolute bandwidth (ABW) is presented. The proposed BPF is based on a tunable complementary-diplexer architecture, which is made up of a main bandpass-type channel and an auxiliary channel with nearly-complementary bandstop-type filtering response ...
Maoyu Fan, Kaijun Song, Li Yang
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Design of dual‐band bandpass filter with constant absolute bandwidth
Microwave and Optical Technology Letters, 2014 ABSTRACTA dual‐band bandpass filter using split‐ring resonators (SRRs) and defected ground structure (DGS) with constant absolute bandwidth is proposed in this article. The inner and outer SRRs are operated for respective passband. DGS is etched on the ground, which can control the coupling coefficient of the filter to maintain constant absolute ...
Tao Su
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IEEE Transactions on Microwave Theory and Techniques, 2021 A reconfigurable balanced dual-band bandpass filter (BPF) with constant differential-mode (DM) absolute bandwidth (ABW) and high selectivity is designed in this article. The proposed BPF is composed of a set of asymmetric short stub-loaded resonators (A-SSLRs) and balanced microstrip-to-slotline transition structures (MSTSs).
Feng Wei, Chi Yuan Zhang, Cao Zeng
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A Compact Tunable Dielectric Filter with Constant Absolute Bandwidth
2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2018 This paper presents a compact tunable filter, consisting of two coaxial dielectric resonators and a pair of parallel-coupled microstrip lines. Coaxial dielectric resonators are directly coupled to each other through the aperture on the side surface of the resonators. The aperture provides magnetic coupling, the parallel-coupled microstrip lines produce
Liangzu Cao, Junmei Yan, Lixia Yin
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Compact Tunable Filtering Power Divider With Constant Absolute Bandwidth
IEEE Transactions on Microwave Theory and Techniques, 2015This paper presents a novel frequency-agile filtering power divider with constant absolute bandwidth and high selectivity. The proposed design utilizes four coupled resonators to obtain the two functions of power division and filtering. Synthesis of the filtering power divider is carried out and the design guidelines are given.
Li Gao, Xiu Yin Zhang, Quan Xue
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A Compact Tunable Notch Filter With Wide Constant Absolute Bandwidth
IEEE Microwave and Wireless Components Letters, 2015A compact notch filter with a wide tunable frequency range is developed. This tunable filter is composed of two varactor-tuned resonators, shunted at input/output ports separately, and one quarter-wavelength transmission line connecting two varactor-tuned resonators.
Ching-Wen Tang, Wei-Chen Chen
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Tunable bandpass filters with constant absolute bandwidth and high linearity
2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2012 This paper presents a frequency-agile bandpass filter with constant absolute bandwidth and high linearity. The proposed resonator is composed of an open-ended transmission line with back-to-back varactor diodes loaded at one end. A novel mixed electric and magnetic coupling scheme is proposed to contorll the coupling coefficients in order to keep the ...
Feng Lin Yu +4 more
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Reconfigurable bandpass filter with electric coupling and constant absolute bandwidth
Microwave and Optical Technology Letters, 2016This paper presents a reconfigurable bandpass filter (BPF) with constant absolute bandwidth (ABW). The structure is composed of a pair of novel half wavelength (λ/2) resonators with two center-tapped var actors. Frequency tuning is made possible by modifying the electrical length of the resonators with four varactors.
Zhi-Han Chen, Qing-Xin Chu
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Varactor-tuned superconducting filter with constant absolute bandwidth at VHF-band
Physica C: Superconductivity and its Applications, 2015 Abstract A four-pole superconducting tunable filter at VHF-band with constant absolute bandwidth is proposed. The resonator consists of a spiral-in-spiral-out (SISO) resonator with one end shorted to ground and the other end loaded with a varactor diode.
Bo Li +6 more
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