Results 41 to 50 of about 92,047 (225)
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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Microstrip doubler microwave with non-traditional implementation
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2019 Frequency multipliers are used in electronic devices to generate spectrally pure sinusoidal signals in the frequency range from a few to tens of GHz. The multipliers are used to multiply the frequency of highly stable but more low-frequency devices with ...
E. Glushechenko
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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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Optimization of aperture coupled microstrip patch antennas [PDF]
, 2010 Aperture coupled microstrip patch antennas (ACMPA) are special class of microstrip antennas with high gain and wide impedance bandwidth. These antennas differ from other microstrip antennas with their feeding structure of the radiating patch element ...
Dogan, Mustafa +5 more
core
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
wiley +1 more source
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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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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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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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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