Results 261 to 270 of about 42,931 (308)
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Dielectric-loaded horn antenna
IEEE Transactions on Antennas and Propagation, 1972A wide-band dual-mode horn, which has a rotationally symmetric beam and extremely low sidelobe levels, can be obtained by loading a dielectric band inside the horn antenna. Measured radiation characteristics of such antennas, including the so-called shaped-beam antenna, are shown.
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Self-filtering low-noise horn antenna
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012In this contribution, we propose an innovative horn antenna design capable to filter undesired noise out. The radiator is based on a regular WR-62 horn, having a metallic screen inserted between the feeding waveguide and the flared aperture. We have drilled a vertical rectangular slit on the screen (the long side of the slit is in the E-plane) and ...
BILOTTI, FILIBERTO +3 more
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Photonic crystal horn and array antennas
Physical Review E, 2003We introduce a defect-based horn antenna in a two-dimensional photonic crystal. Our numerical simulations demonstrate the efficient, highly directional nature of the antenna. It has a large operating bandwidth, low loss, and an operating frequency that is scalable to various regions of the electromagnetic spectrum.
Andrew R, Weily +2 more
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IEEE Antennas and Propagation Magazine, 1990
The construction and history of the calibration horn antenna, a large standard-gain horn at the National Radio Astronomy Observatory, Green Bank, West Virginia, are discussed. Construction of the horn began in 1958. Its purpose was to make absolute measurements by observing a strong source directly with a standard-gain horn antenna.
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The construction and history of the calibration horn antenna, a large standard-gain horn at the National Radio Astronomy Observatory, Green Bank, West Virginia, are discussed. Construction of the horn began in 1958. Its purpose was to make absolute measurements by observing a strong source directly with a standard-gain horn antenna.
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Horn Image Guide Leaky-Wave Antenna
MTT-S International Microwave Symposium Digest, 1981A novel approach for designing a frequency-scanning millimeter-wave antenna is described. The antenna is constructed by using an image wide leaky-wave antenna embedded in a long trough with metal flares along both sides. The optimum flare angle for achieving maximum gain is theoretically predicted.
T.N. Trinh, R. Mittra, R.J. Paleta
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Shaped-beam horn-reflector antennas
IEEE Transactions on Antennas and Propagation, 1975A design method for a horn-reflector antenna, which has a beam of arbitrary cross section, is developed. To show the effectiveness of the design theory, the measured data of an electrical model of Japan's domestic communications satellite antenna of this type are shown in comparison with calculated results.
T. Katagi, Y. Takeichi
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Simulated corrugated feed horn antenna
International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990A technique for developing a new type of feed horn with the same radiation characteristics as a metallic corrugated horn is presented. This horn antenna with low back and sidelobe levels can be used as a substitute for a metallic corrugated horn with added advantages of high gain, low cross polarization, low cost, and light weight.
S. Rodrigues, P. Mohanan, K.G. Nair
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Proceedings of the IRE, 1953
Formulas are derived for the E- and H-plane radiation patterns of antennas fed by horns as functions of illumination taper. The case of a single lens or reflector antenna fed by two contiguous horns stacked in either one of the principal planes is then investigated.
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Formulas are derived for the E- and H-plane radiation patterns of antennas fed by horns as functions of illumination taper. The case of a single lens or reflector antenna fed by two contiguous horns stacked in either one of the principal planes is then investigated.
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Single aperture monopulse horn antenna
IEEE Microwave and Wireless Components Letters, 2005This paper describes the design and performance of a conical Potter horn antenna which can generate sum or difference far field patterns suitable for monopulse tracking applications. The antenna consists of a horn antenna fed with a metal post loaded polarizer which is energised by suitably phased 50-/spl Omega/ matched coaxial probes.
Subbarao, B., Fusco, V. F.
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2005
In this work the basic theory of circular corrugated horn antennas is presented, using easy concepts with simple mathematics. The aim is to give the reader an understanding of the fundamental electromagnetic properties of these devices and to provide a set of quantitative design tools for the electromagnetic engineer.
L. Lucci +3 more
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In this work the basic theory of circular corrugated horn antennas is presented, using easy concepts with simple mathematics. The aim is to give the reader an understanding of the fundamental electromagnetic properties of these devices and to provide a set of quantitative design tools for the electromagnetic engineer.
L. Lucci +3 more
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