Results 91 to 100 of about 1,806 (250)
Review of Recent Advancement on Nature/Bio-Inspired Antenna Designs
IEEE AccessThis article presents an extensive examination of antennas rooted in nature and biology, showcasing their remarkable performance across a wide spectrum of frequencies—from microwave to terahertz.
Farooq Azam +3 more
doaj +1 more source
A design of Microstrip Patch Antenna using hybrid fractal slot for wideband applications
Ain Shams Engineering Journal, 2018 The paper presents a design of Microstrip Patch Antenna (MPA) using hybrid fractal slot (Koch-Minkowski and Koch-Koch) along with partial ground plane for wideband applications.
Narinder Sharma, Vipul Sharma
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, 2010 Fractals are geometric shapes that repeat itself over a variety of scale sizes so the shape looks the same viewed at different scales. For such mathematical shapes B.Mandelbrot [1] introduced the term of “fractal curve”. Such a name is used to describe a family of geometrical objects that are not defined in standard Euclidean geometry.
Mircea V., Roman Baic
openaire +2 more sources
Nonthermal plasma approaches for combating implant‐associated infections: A compendious review
VIEW, EarlyView.Implant‐associated infections pose serious clinical challenges. Non‐thermal plasma (NTP) modifications overcome this bottleneck in distinct ways relative to traditional sterilization methods. Gas‐phase plasmas generate highly energetic species, UV radiation and reactive oxygen/nitrogen species (RONS), which alter the implant surface properties.
A. M. Trimukhe +8 more
wiley +1 more source
International Journal of Antennas and Propagation, 2015 This paper presents a design methodology for frequency selective surfaces (FSSs) using metallic patches with dissimilar Sierpinski fractal elements. The transmission properties of the spatial filters are investigated for FSS structures composed of two ...
Clarissa de Lucena Nóbrega +4 more
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Analysis and design of Minkowski-like fractal antennas
Dianzi Jishu Yingyong, 2019 In order to achieve that an antenna works in ISM2.4G(2.4～2.483 5 GHz), Bluetooth,GPS,WLAN(2.4～2.48 GHz) and other multi-frequency band at the same time，the Minkowski fractal microstrip antenna based on the fractal theory is designed, and the original ...
Tang Zhen, Wang Lixin, Tang Tianyu
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Wildlife Biology, EarlyView.Multiple management strategies exist to combat bird damage to agriculture. We explored combining two tools, drones as frightening devices and an avian repellent, to assess effectiveness of an integrated method to deter large flocks on complex landscapes. We evaluated the ability of a spraying drone (DJI Agras MG‐1P) deploying Avian Control (i.e. active
Jessica L. Duttenhefner +2 more
wiley +1 more source
Microstrip fractal-shaped antennas: a review
, 2007 A review of electromagnetic features of microstrip antennas using fractal geometries is presented divided in four main areas: multi-frequency antennas, combination of multi- frequency with broadband techniques, high-directivity patches, and arrays with ...
Borja, C. +5 more
core +2 more sources
Investigation of EBG array performance on decreasing the mutual coupling and improve shield factor
Journal of Electrical Systems and Information Technology, 2015 In this paper EBG structures including parallel plates of EBGs are being used to reduce the mutual coupling between the two omni-directional antennas. Here, we have chosen the Discone antennas as omni directional antennas and comparisons between uniform ...
Rahele Ahmadian +2 more
doaj +1 more source
Animal Conservation, EarlyView.Monitoring semi‐aquatic mammals is essential for their conservation, but it is made difficult by their elusive lifestyle and generally low abundance. Eurasian otter (Lutra lutra) monitoring has traditionally relied on scat surveys, but eDNA and camera‐trapping are emerging as promising alternatives.
Simon Lacombe +15 more
wiley +1 more source