Results 51 to 60 of about 14,945 (257)
IEEE Access, 2021 To achieve wideband circular polarization (CP) characteristics, a new structure with a single feeding technique has been proposed. In the proposed CP structure, to excite the cylindrical dielectric resonator (CDR) four asymmetrical rectangular slots are ...
Reena Kumari +2 more
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Advanced Healthcare Materials, EarlyView.ABSTRACT In vitro arterial models offer ethical and robust alternatives for vascular research but require cytocompatible materials that replicate physiological mechanics. Poly(vinyl alcohol) (PVA) hydrogels produced by directional freezing and salting‐out (PVA DFSO) are anisotropic yet lack stability for cell culture. Herein, methacrylated PVA (PVA‐MA)
Javiera Sanhueza Ortega +4 more
wiley +1 more source
Alexandria Engineering JournalDielectric resonator antennas (DRAs) use dielectric material as a resonator to accomplish high radiation efficiency and avoid severe conductor loss. The dielectric material that behaves as a resonator is plagued by a number of limitations, including ...
Mohamad Faiz Mohamed Omar +7 more
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Two Elements Elliptical Slot CDRA Array with Corporate Feeding For X-Band Applications [PDF]
Iraqi Journal for Electrical and Electronic Engineering, 2014 In this paper, a compact two-element cylindrical dielectric resonator antenna (CDRA) array with corporate feeding is proposed for X-band applications.
Abdulkareem S. Abdullah +3 more
doaj
Performance Estimation of Cylindrical Dielectric Resonant Antenna
International Journal of Recent Technology and Engineering (IJRTE), 2020 This paper discusses the design and implementation of a cylindrical dielectric resonator antenna which is excited with HEM11δ as dominant mode using surface coaxial probe feed technique. The designed antenna radiates in the HEM11δ mode with a wide impedance bandwidth of over 2 GHz, and with a maximum gain of 5.93 dB thereby improving both gain and ...
null Santhosh* +3 more
openaire +1 more source
Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection
Advanced Materials, EarlyView.Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel +7 more
wiley +1 more source
Cylindrical Dielectric Resonator Antennas with Harmonic Control as an Active Antenna Radiator
International Journal of Antennas and Propagation, 2009 A cylindrical dielectric resonator antenna is proposed as a radiator for an active integrated antenna. Harmonic tuning, which is the key step in designing active antenna radiators, is achieved via a combination of shape factor control over the resonator ...
L. Lucci +4 more
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Advanced Materials, EarlyView.Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley +1 more source
A Wideband Circularly Polarized Dielectric Resonator Antenna Array
IEEE Access, 2021 In this article, a $2\times 4$ sequentially rotated wideband circularly polarized (CP) dielectric resonator antenna (DRA) subarray with the high gain is proposed in this article.
Wen-Wen Liu, Zhen-Hua Cao, Zhi Wang
doaj +1 more source
Electric discharge for treatment of trace contaminants [PDF]
, 1978 A radio frequency glow discharge reactor is described for removing trace oxidizable contaminants from an oxygen bearing atmosphere. The reaction chamber is defined by an inner metal electrode facing a dielectric backed by an outer conductive electrode ...
Flamm, D. L., Wydeven, T. J.
core +1 more source