Results 21 to 30 of about 7,010 (166)
Scientific ReportsThis study presents a new compact single-layer microstrip 4-port super UWB MIMO antenna designed to operate in the frequency range of (2.5–50) GHz, achieving an impressive 320.2% impedance bandwidth.
Hesham A. Mohamed, Mohamed Aboualalaa
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Advanced Science, EarlyView.Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel +3 more
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RF communication between dual band implantable and on body antennas for biotelemetry application
Scientific ReportsThis paper investigates two antennas for implantable communication, which are a wide-band, low-profile transmitting antenna with a circular polarization (CP) merit immersed in a lossy medium and a corresponding wide-band, low-profile receiving antenna ...
Yara A. Kamel +3 more
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DEFECTED CONCRETE POST DETECTION THROUGH ANTENNA ARRAY COUPLING EFFECT [PDF]
Journal of Engineering Science and Technology, 2017 In this paper, a proposed defected concrete post detection system is introduced. The proposed system consists of two compact microstrip broad side antenna arrays resonating at 1 GHz with dimensions of 45 cm by 13.2 cm for each antenna array and a weight ...
TAMER G. ABOUELNAGA, KAMEL S. SULTAN
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Influence of Microcracks on Silver/Polydimethylsiloxane-Based Flexible Microstrip Transmission Lines
Applied Sciences, 2020 Microcrack is commonly seen as a defect in materials that affects the performance of flexible radio frequency (RF) devices. Here, we investigate the influence of microcracks on the RF characteristics of flexible microstrip by stretching flexible ...
Daye Ding +5 more
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Advanced Science, EarlyView.We present a textile‐compatible, self‐healing liquid metal ink and a dual‐mask printing technique for high‐resolution patterning. Using this approach, we demonstrate high‐performance millimeter‐wave (mmWave) electronic textiles that exhibit exceptional insensitivity to deformation.
Lu Ju +11 more
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Advanced Science, EarlyView.This paper proposes a hierarchical reconfigurable metasurface architecture (HRMA) to achieve comprehensive electromagnetic parameter modulation and on‐demand polymorphic function switching. The reconfigurable metasurface is divided into a programmable core (PC) and scenario‐guided functional modules (FMs), exhibiting significant flexibility and ...
Lihao Zhu +11 more
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Circularly Polarized Triband Printed Quasi-Yagi Antenna for Millimeter-Wave Applications
International Journal of Antennas and Propagation, 2015 This paper describes the design and development of a triband with circularly polarized quasi-Yagi antenna for ka-band and short range wireless communications applications. The proposed antenna consists of an integrated balun-fed printed dipole, parasitic
Dalia M. Elsheakh, Magdy F. Iskander
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Design of a Microstrip Diplexer-Integrated Filtering Power Divider
IEEE Access, 2019 This study proposed a new method and structure for designing a diplexer-integrated filtering power divider. A filtering function with equal power division was integrated with a diplexer. The multifunctional diplexer comprised eight coupled resonators and
Chi-Feng Chen +4 more
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Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
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