نتایج جستجو برای: fractal patch

تعداد نتایج: 70260  

2005
JING HU JIANBO GAO FRED L. POSNER YI ZHENG WEN-WEN TUNG

Sea clutter refers to the radar returns from a patch of ocean surface. Accurate modeling of sea clutter and robust detection of low observable targets within sea clutter are important problems in remote sensing and radar signal processing applications. Due to lack of fundamental understanding of the nature of sea clutter, however, no simple and effective methods for detecting targets within sea...

2017
Balwinder S. Dhaliwal Shyam S. Pattnaik Harish K. Sardana

During this decade, the design of small-size wireless communication devices was key topic in the field of communication engineering. The design of miniaturized antenna is an important parameter to reduce the overall size of the wireless communication devices. Many approaches have been proposed to design the miniaturized antennas. Recently, fractal antenna geometry has been employed to design th...

2004
J. Romeu

‘Mos differential voltage to current converter with improved linearity’. USA patent No 5598117 1996 ‘High frequency BIMOS linear V-I converter, voltage multiplier mixer’. USA patent No 5151625 1991 EMERALD, P R.: ‘Merged technologies: present capabilities and value for applications in high voltage and smart-power circuitry’, IEEE Truns. Ind. Appl,, 1990, 26, (6), pp. 1124-1130 RAHIN, 2.: ‘Using...

2012
Sarita Bajaj Ajay Kaushik

There has been an ever growing demand for antenna designs that possesses compact size, low profile and multiband features. Recently the possibility of developing antenna designs that exploit in some way the properties of fractals to achieve these goals, at least in part, has attracted a lot of attention. Fractal antennas have useful applications in cellular telephone and microwave communication...

Journal: :Aeu-international Journal of Electronics and Communications 2022

This article presents the design and realization of compact, geometrically simple, wideband high gain antenna for V-band communication systems. The is designed by using a conventional circular patch, which further modified another fractal patch. Furthermore, addition three elliptical shaped patches significantly increases bandwidth antenna. Afterwards, slot etched from radiator to improve radia...

Journal: :IEEE Antennas and Wireless Propagation Letters 2006

Journal: :Pattern Recognition 2005
Xiuzhen Li Hong S. He Rencang Bu Qingchun Wen Yu Chang Yuanman Hu Yuehui Li

The behavior of several landscape pattern metrics were tested against various pattern scenarios generated by neutral landscape models, including number of classes, scale-map extent, scale-resolution, class proportion, aggregation level—RULE, and aggregation level—SimMap. The results demonstrate that most of the metrics are sensitive to certain pattern scenarios, yet are not sensitive to others;...

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