نتایج جستجو برای: fractal patch

تعداد نتایج: 70260  

2010
S. Sheik Mohammed K. Ramasamy T. Shanmuganantham

In this paper a Microsrtip patch fractal antenna in a Sierpinski carpet is proposed for the Wireless Power Transmission (WPT) System. The design and simulation results of 2.45 GHz Microstrip patch fractal antenna are presented. The antenna is designed based on the transmission line model with the input impedance of 50Ω. The simulation results are well matched with the calculated values and show...

2013
Jawad K. Ali

In this paper, a new compact multiband patch microstrip antenna design is presented as a candidate for use in modern multi-functions communication systems. The proposed antenna design is fractally generated using Koch fractal curve geometry applied to the conventional square microstrip patch antenna. Antenna structures resulting from the successive iterations in the proposed fractal generation ...

2015
Jacob Abraham Thomaskutty Mathew

The design and development of a proximity fed dualband microstrip patch antenna based on David fractal geometry are presented. David fractal microstrip antenna offers good performance in the 1.754 1.816 GHz and 3.37 3.415 GHz bands and is suitable for GSM 1800, WiMAX applications. The use of David fractal geometry offers miniaturization of the antenna structure. The proposed first iteration fra...

2014
Fong Lee

A circularly polarized fractal boundary microstrip antenna is presented. The sides of a square patch along xaxis, yaxis are replaced with Minkowski and Koch curves correspondingly. By using the fractal curves as edges, asymmetry in the structure is created to excite two orthogonal modes for circular polarization (CP) operation. The indentation factors of the fractal curves are optimized for pur...

2015
Yogesh Bhomia Pradeep Kumar

This paper presents a design of Rectangular Fractal microstrip patch antenna using Iteration Methods by cutting different slots on rectangular microstrip antenna and experimentally studied on IE3D software This design is achieved by using three stages of iteration and a Probe feed This design has been studied in 3 iterations The radiation pattern of the proposed fractal shaped antennas maintain...

Journal: :Physical review. E 2016
Rodrigo P Rocha Wagner Figueiredo Samir Suweis Amos Maritan

In this work we study the likelihood of survival of single-species in the context of hostile and disordered environments. Population dynamics in this environment, as modeled by the Fisher equation, is characterized by negative average growth rate, except in some random spatially distributed patches that may support life. In particular, we are interested in the phase diagram of the survival prob...

Journal: :IOP Conference Series: Materials Science and Engineering 2013

2004

Fractals hove been used recently to describe spatial patterns in mony iandscape-leve1 applicotions. One such appiication has been to measure the geometnk complexity of landscape features. This paper describes a modified fractal dimension to be used as a measure of distribution of Iandscape diversity in a classified GIS image. The resulting modified fractal dimension calculation consisientiy des...

Vegetation in any landscape reflects its health condition. Monitoring land use change and land cover plays a key role in environmental planning and management. Mazandaran province has always been considered by tourists due to its high tourism potential and consequently the vegetation, especially the forest, has been damaged. In this study, vegetation Contiguity and integrity in Mazandaran using...

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