Results 231 to 240 of about 16,047,575 (289)
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High-efficiency super-gain antenna arrays
2010 URSI International Symposium on Electromagnetic Theory, 2010It is an intriguing fact that the array gain of densely packed antenna arrays can be much larger than the number of antennas which comprise the antenna array. However, their large array gain seems to be inaccessible in practice, for it tends to be all eaten up by a loss of efficiency that accompanies such super-gain effects.
Michel T. Ivrlac, Josef A. Nossek
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A new low noise, high gain antenna
IRE International Convention Record, 1963A new antenna type is described which combines the low noise temperature characteristics of the horn-reflector antenna with the more attractive mechanical features associated with the paraboloidal reflector. Cassegrain optics used in an off-set feed configuration enables a virtual source to be formed without sub-reflector blockage. An extremely compact
S.R. Jones, K.S. Kelleher
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Hybrid optical antenna with high directivity gain
SPIE Proceedings, 2013Coupling of a far-field optical mode to electronic states of a quantum absorber or emitter is a crucial process in many applications, including infrared sensors, single molecule spectroscopy, and quantum metrology. In particular, achieving high quantum efficiency for a system with a deep subwavelength quantum absorber/emitter has remained desirable. In
Alireza, Bonakdar, Hooman, Mohseni
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Miniaturized High Gain Antenna for Biomedical Application
Proceedings of the 3rd International Conference on Future Networks and Distributed Systems, 2019In this paper, a low-profile antenna system has been designed for the biomedical application operating in industrial, scientific, and medical (2.40-2.4835 GHz) band. By using a shorting technique, a circular cut shaped radiator and the polygon-shaped open-ended slots in the ground plane is proposed.
Muhammad Yousaf +5 more
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A Compact High Gain Antenna for Small Satellite Applications
IEEE Transactions on Antennas and Propagation, 2007The development of a circularly-polarized compact high-gain antenna to be used for the European Student Earth Orbiter small satellite mission is described. The antenna is realized stacking two coaxial shorted annular patches and placing the top one at half a wavelength from the lower one. At variance of other similar configurations proposed in the past,
Arnieri E +3 more
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High‐gain printed dipole antenna
Microwave and Optical Technology Letters, 2005AbstractA printed dipole antenna showing high gain (about 6.8 dBi) radiation in the azimuthal plane is presented. The dipole antenna has a narrow width of 10 mm and a total length of about 202 mm (with 1.64 wavelengths of the frequency at 2442 MHz, the center frequency of the 2.4‐GHz WLAN band).
Yung‐Tao Liu +2 more
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High gain patch antenna for CubeSat
2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), 2016A design of high gain patch antenna system suited for inter-satellite and earth observatory is presented. The antenna consists of four patch antenna array designed for maximum gain, this antenna is suitable for CubeSat structure. A 96mm square antenna substrate is designed and fixed to one of the faces of CubeSat.
S. Gunaseelan, M. Murugan
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A High-Gain Dual-Polarized Antenna
2018 IEEE International Conference on Computational Electromagnetics (ICCEM), 2018A differentially-driven dual-polarized high-gain stacked patch antenna is presented in this paper. Three-layer stacked patches are adopted to increase the impedance bandwidth of the antenna. Each of the three stacked patches are inserted with four shorting posts for enhancing the antenna gain. A wide band and a high isolation can be realized. Moreover,
Lei Ge, Xujun Yang
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High Gain EBG Resonator Antenna
2005 18th International Conference on Applied Electromagnetics and Communications, 2005This paper describes how it is possible to increase the radiation bandwidth and the gain of a classical planar EBG antenna. Those two parameters are relative to the EBG material but also to the excitation, this second characteristic is studied here. The principle is to excite the EBG structure with several sources (instead of a single one classically).
B. Jecko, T. Monediere, L. Leger
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IEEE Microwave and Wireless Components Letters, 2005
A novel design for a high gain-slot antenna is proposed. In the proposed design, by properly etching nonradiating open circuit slots and crossovers along the axis of the radiating slot, the aperture field on every slot dipole forms in phase-electric fiend standing wave distributions. As a result, the radiating slot can achieve a high gain.
null Qinjiang Rao +3 more
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A novel design for a high gain-slot antenna is proposed. In the proposed design, by properly etching nonradiating open circuit slots and crossovers along the axis of the radiating slot, the aperture field on every slot dipole forms in phase-electric fiend standing wave distributions. As a result, the radiating slot can achieve a high gain.
null Qinjiang Rao +3 more
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