Results 261 to 270 of about 25,376 (311)
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Circular polarization broadband antenna feed
2007 6th International Conference on Antenna Theory and Techniques, 2007In work results of research of mutual influence of spiral radiators in an array are submitted with the purpose of expansion of a frequency band by the antenna of system and the further improvement of its characteristics.
Lobkova, Lyubov M. +4 more
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Inset feed microstrip patch antenna
2015 International Conference on Computer, Communication and Control (IC4), 2015A rectangular slot Micro strip Patch Antenna is designed with frequency ranging from 3 GHz to 12GHz with dual band function with its one band from 5–8.7 GHz frequency range and bandwidth of 3.7 GHz (calculated below −10dB) and another band operating on frequency range from 9.4–12GHz with bandwidth of 2.6 GHz (calculated below −10dB). Former is used for
Sonali Shankar, Himanshu Chaurasiya
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1989
In the present discussion covering the most important types, those aspects which are of particular practical interest to the designer will be covered, emphasising available options and including references to the latest advances in feed design. For the sake of descriptive economy and consistency, it will be assumed, unless otherwise stated, that the ...
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In the present discussion covering the most important types, those aspects which are of particular practical interest to the designer will be covered, emphasising available options and including references to the latest advances in feed design. For the sake of descriptive economy and consistency, it will be assumed, unless otherwise stated, that the ...
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1966
Abstract : This study of the transverse focal region of a spherical reflector includes theoretical analyses centered on geometric optics, on vector polarization and on diffraction integrals of physical optics and their evaluation by the method of stationary phase. The results of the numerical evaluation of the focal region field for an incoming wave of
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Abstract : This study of the transverse focal region of a spherical reflector includes theoretical analyses centered on geometric optics, on vector polarization and on diffraction integrals of physical optics and their evaluation by the method of stationary phase. The results of the numerical evaluation of the focal region field for an incoming wave of
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Turnstile-based antenna feed systems
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2015This paper provides an overview of turnstile-based OMT designs of the Airbus Defence and Space product portfolio. Firstly build systems were used for ground stations and measurement feeds only, but latest developments have already found their way into space applications. Hence one aspect of the paper is to discuss, how the turnstile design can serve as
Y. Konkel, C. Hartwanger, M. Schneider
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Novel millimeter ACC antenna feed
IEE Colloquium on Antennas for Automotives, 2000In this paper, the author describes the construction and performance of a new microstrip-polyrod antenna feed and compares it to alternative microstrip feeds for dielectric lenses. The antenna feed was developed for an automotive radar system and allows microstrip patch radiators to illuminate dielectric lenses or reflectors in an efficient manner. The
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UWB planar monopole antenna with differential feed
2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016This paper presents a differentially driven planar monopole antenna for UWB (Ultra-Wideband) applications. The dimensions of the antenna structure are first studied to achieve wideband characteristics with good impedance matching. The goal is to find dimensions which satisfy the UWB demands but also to show that antenna size can be miniaturized by ...
Marko Sonkki +4 more
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Polarization-transforming antenna feed horns
IEEE Transactions on Antennas and Propagation, 1971A set of polarization-transforming antenna feed horns has been developed for an X -band radar antenna. Use of the proper feed horn permits transmission of horizontal, vertical, 45\deg linear, 135\deg linear, right circular or left circular polarization, and reception of both the parallel- (same sense as transmitted) and orthogonal-polarized return.
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Wideband planar spiral antenna with peripheral feeding
2017 International Conference on Information and Telecommunication Technologies and Radio Electronics (UkrMiCo), 2017In the paper the new type of a low-directional circular polarization antenna is presented. The antenna design is a planar spiral with a small number of turns of variable width, surrounded by a flat conducting screen. On the basis of numerical simulation, the frequency dependences of the main parameters of antenna for various design modifications are ...
T. Tsaliev, S. Siden
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IEEE Antennas and Propagation Magazine, 2010
Reflector antennas are widely used on satellites to communicate with ground stations. They simultaneously transmit and receive RF signals using separate downlink and uplink frequency bands. These antennas require compact and high-performance feed assemblies with small size, low mass, low passive intermodulation (PIM) products [1], low insertion loss ...
Sudhakar Rao, Jay Kralovec
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Reflector antennas are widely used on satellites to communicate with ground stations. They simultaneously transmit and receive RF signals using separate downlink and uplink frequency bands. These antennas require compact and high-performance feed assemblies with small size, low mass, low passive intermodulation (PIM) products [1], low insertion loss ...
Sudhakar Rao, Jay Kralovec
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