Results 41 to 50 of about 18,238 (168)
Design of high throughput antennas for wideband, ultra wideband and super wideband applications
, 2020 Demand for multifunctional devices are increasing day by day and it requires antenna that can support multiple frequencies. The necessity of designing antenna that supports these wide range of frequencies with high performance is growing. In this thesis, two antennae have been designed and tested in the lab to check functionality, and they cover ...
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Folded Chirp-Rate Shift Keying Modulation for LEO Satellite IoT
IEEE Access, 2019 In the low earth orbit (LEO) satellite Internet of Things (IoT), the IoT devices can be distributed in remote areas (e.g., desert, ocean, and forest) for some special applications, where they are unable to have direct terrestrial network accesses and can
Chao Yang +3 more
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Slanted-eye featured forbidden bands in a water channel with undulated sidewalls
Results in Physics, 2021 Resonances induced by structure periodicity can always lead to frequency gaps, which are forbidden bands of propagating waves. Besides the traditional Bragg gaps, non-Bragg gaps have been found in periodic waveguides for years, which have been proved to ...
Bo-Yang Ma +4 more
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Manipulation of double acoustic defect states based on connection phase mismatching
Results in Physics, 2021 Defects in periodic structures always lead to the defect states, which can modulate the physical or chemical properties of materials to realize devices with very high performance.
Huan Liu +4 more
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Temperature tuning of defect state induced by the periodic cavities between the phononic crystals
AIP Advances, 2021 The defect state in periodic structures usually leads to a pass band in the forbidden bandgap and energy localization at the position of geometric change.
Huan Liu +5 more
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Energy Efficiency in the Wideband Regime [PDF]
IEEE Transactions on Wireless Communications, 2013 End-to-end communication is the fundamental building block of communication networks. In this paper, we discuss globally optimal energy efficient design for end-to-end communications. An end-to-end multiple-hop system with one sender, one receiver, and multiple relays is considered.
Miao, Guowang, Västberg, Anders
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Target Parameter Estimation for OTFS-Integrated Radar-Communication Systems
IEEE AccessIn high-mobility scenarios envisioned for 6G communications, orthogonal time frequency space (OTFS) has emerged as a promising alternative to conventional orthogonal frequency division multiplexing (OFDM) schemes.
Jiayin Liang, Jinfang Wen, Zhiling Tang
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IEEE Access, 2019 The previously proposed resonance-based reflector (RBR) antennas have the merits of wide impedance bandwidth, low-profile, and unidirectional pattern; however, their front-to-back ratio (FBR) bandwidths are narrow.
Bao-Jian Wen +5 more
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Localization of water surface waves in a heterostructure channel with corrugated sidewalls
AIP Advances, 2021 This paper describes the fabrication of a water channel heterostructure by combining two types of periodic sidewalls with different duty ratios. This enables the manipulation and localization of water surface waves in bands that are traditionally ...
Jia-Yi Zhang +4 more
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IEEE Open Journal of the Communications SocietyWith the advent of the fifth-generation (5G) and beyond mobile communications, a plethora of Internet-of-Things (IoTs) applications, such as intelligent factories, smart transportation, and others are rapidly evolving.
Fangqing Tan +4 more
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