Results 201 to 210 of about 185,372 (245)

A Wideband Multi-Polarized Microstrip Antenna with High Polarization Isolation Based on Dual-Circular Polarization. [PDF]

Micromachines (Basel)
Wang X, Zhou H, Wang X, Lei X, Hao B, Zhong M, Zhou C.   +6 more
europepmc   +1 more source

Record-level, exceptionally broadband borophene-based absorber with near-perfect absorption: design and comparison with a graphene-based counterpart. [PDF]

Nanophotonics
Marefati AA, Bozorgi M.
europepmc   +1 more source

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Tunable bandpass filters with constant absolute bandwidth cascaded trisection topology

Journal of Electromagnetic Waves and Applications, 2021
A novel cascade trisection (CT) coupling structure, based on half-wavelength resonators, is proposed for designing constant absolute bandwidth (CABW) tunable bandpass filters.
JingJing Yang, Qianyin Xiang, Xiaoguo Huang, Dinghong Jia, Quanyuan Feng   +4 more
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Tunable Diplexer With Identical Passband and Constant Absolute Bandwidth

IEEE Transactions on Microwave Theory and Techniques, 2020
Frequency-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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Tunable bandpass filters with constant absolute bandwidth

Proceedings of the 9th International Symposium on Antennas, Propagation and EM Theory, 2010
This paper presents the design of novel tunable bandpass filters with constant absolute bandwidth. A novel mixed electric and magnetic coupling scheme is utilized. Theoretical analysis indicates that it is able to achieve desired coupling coefficients between the proposed resonators at various frequencies so as to obtain constant absolute bandwidth ...
null Hong-Lin Zhang, Xiu Yin Zhang, null Bin-Jie Hu   +2 more
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A Tunable Bandpass Filter with Constant Absolute Bandwidth

Journal of Electromagnetic Waves and Applications, 2011
A 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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Constant absolute bandwidth UHF tunable filter using RF MEMS

2012 42nd European Microwave Conference, 2012
This 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, C. Guines, D. Passerieux, P. Blondy, G. Neveu, M. P. Dussauby, W. Rebernak, M. Giraudo   +7 more
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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, 2015
This 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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Varactor-tuned dual-band filter with constant absolute bandwidth

2012 IEEE/MTT-S International Microwave Symposium Digest, 2012
This paper proposed a novel varactor-tuned dual-band filter with constant absolute bandwidth. It is composed of a pair of half-wavelength open-ended resonators and a pair of quarter-wavelength short-ended resonators. The resonators utilized two different methods to control the electric and magnetic coupling so as to achieve constant absolute bandwidth.
null Yangping Zhao, null Taijun Liu, null Tiefeng Xu, null Qiuhua Nie, null Yinshui Xia, null Rangding Wang, null Gangyi Jiang, null Yan Ye   +7 more
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