Small Antennas
Application of Kramers-Kronig transformations to increase the bandwidth of small antennas
... Many techniques have been suggested and investigated for reducing the Q-factor of electrically small antennas. A few examples include but are not limited to the works by Hansen and Collin (2011), Yaghjian ...
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Selective Electron Beam Melting Manufacturing of Electrically Small Antennas
... electrically small antennas, which have subsequently garnered interest amongst researchers and industry ...These antennas are characterized by their largest dimensions translating to a fraction of ...
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Electrically small antennas: The art of miniaturization
... Electrically small antenna, the largest dimension of the antenna are enclosed within the sphere of radius ...electrically small antenna the dimensions of which are directly related to the operating ...
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DESIGN AND OPTIMIZATION OF ELECTRICALLY SMALL ANTENNAS FOR HIGH FREQUENCY (HF) APPLICATIONS
... easily and rapidly transportable, required no site preparation, and left no environmental footprint when removed. The measured performance indicates this design offers a much more suitable HF antenna solution for the ...
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$1 SRD Antennas. Keywords. Introduction. Overview. By P. M. Evjen. PCB antenna design Body-worn and handheld antennas. Antenna theory Small antennas
... For small high-Q antennas, the dissipation loss in the antenna structure and loss in the matching network will dominate the overall Q. Therefore, in practice, the Q of the loop and the monopole will not be ...
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Small Antennas for High Frequencies
... The radiator can theoretically be of any shape. Figure below shows a variety of shapes which have been used in planar antenna design. Among these, elliptical planar antennas are of importance to planar antenna ...
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Description of Electrically Small Resonant Antennas by Electric and Magnetic Dipoles
... As far as electrically small antennas are concerned, their efficient radiation requires resonances, i.e., the reactive power that in turn implies the existence of both an electric and a magnetic energy ...
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Investigation of Vector Antennas and their Applications
... infinitesimally small antennas, finite length dipole and long wire traveling wave ...These antennas have been used in linear array MIMO ...uni-polarized antennas. Therefore, these vector ...
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Design of electrically small top loaded antennas for GPS applications
... of small high frequency antennas continues to be a challenge while maintaining required bandwidth and low quality ...for small antennas reactance will be very ...helical antennas using ...
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Analysis of Electrically Small Size Conical Antennas
... for small and broadband ...systems. Small antennas typically have characteristics of large input reactance and small radiation ...a small antenna remain almost constant as the size and ...
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Efficient Electrically Small Oblate Spheroidal and Spherical Antennas in Shells with Negative Permittivity
... discussed antennas depends on progress in technology of mediums with negative ...the antennas is being currently intensively ...enough small size in order to be used for the shells of the ...
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UWB antennas for wireless communications
... In Chapter 4, a compact planar UWB monopole antenna has been proposed to achieve quintuple-band-notched characteristics. The quintuple-band-notched function has achieved by embedding five m-shaped resonators into the ...
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Multiband Fractal-Like Antennas
... Immense growth in wireless communication system demands more complex and sophisticated systems along with more operating bands. In mobile communication systems many different frequency bands are needed such as global ...
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Nonlinear characterisation of reconfigurable antennas
... This method consists of a wide range of technologies which includes micro-machined Vee antenna [40]. However, material-based techniques using electroactive and shape-memory materials is the emerging technology which ...
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Filtering Antennas: Synthesis and Design
... In this paper, detailed synthesis and design of both the antenna is discussed. Type 1 Filtering Antenna is third order 2.45GHz Chebhyshev Bandpass Filtering Antenna in which the printed inverted-L antenna act as a last ...
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Slits in parabolic reflector antennas
... Similarly the scattered field from a strip under Dirichlet Boundary Conditions is the negative of the diffracted field through the slit with Neumann Boundary Conditions on the conducting[r] ...
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Implantable antennas for biomedical applications
... Keeping into account a wide range of technical and medical concerns, the focus has been concentrated on the implantable antennas, one of the most challenging elements of a WBAN system. In addition to the classical ...
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Null field treatment of antennas
... 1962, "The numerical solution of an integral equation of the first kind for the current density in an antenna body of revolution",.. [Translated from Zh.[r] ...
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Abstract- Array antennas are popular compared to discrete antennas as it is possible to control the radiation
... It is evident from results, the patterns obtained by PSO algorithm are found better than that of GA and SA in terms of sidelobe levels and their structural behavior. It is clear that for small number of elements, ...
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On the Duality between MIMO Systems with Distributed Antennas and MIMO Systems with Colocated Antennas
... distributed antennas and unequal average link SNRs behave in a very similar way as MIMO systems with colocated an- tennas and spatially correlated links (with regard to various performance ...receive ...
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