Results 101 to 110 of about 179 (156)
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Calculable antenna factor of a biconical reference antenna
2011 IEEE International RF & Microwave Conference, 2011Calculable antenna is used as a reference antenna for antenna calibration to obtain accurate antenna factor. This paper focuses on calculable biconical antenna with low uncertainty. The proposed biconical antenna factor can be derived either by simulation or by analytical method. The antenna factor is directly derived from antenna gain.
Syarfa Zahirah Sapuan +2 more
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Experimental multiport bicone antenna
Frequenz, 2013AbstractA practical, easily manufactured multiport bicone antenna suitable for many receiving tasks such as direction finding systems can be made by using sharp-edged metal fins on the feeding coax center conductor to provide a tapered transition and connection path to coaxial probes. This construction resembles an arrow's tail.
Ylinen, Juhana, Eskelinen, Pekka
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A Versatile Multiport Biconical Antenna
Proceedings of the IRE, 1957This paper describes a multiport, biconical antenna that can be used as a wide-band direction finder or multiplexer. When the antenna is used for reception, incident plane waves excite in the feeding coaxial line both the TEM mode and the orthogonal TE11 mode whose azimuthal orientation depends on the direction of arrival of the signal.
R. Honey, E. T. Jones
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Direct feed biconical antenna as a reference antenna
2011 IEEE International RF & Microwave Conference, 2011Antenna factor is the main parameter in EMC measurement. Therefore, accurate and low uncertainty antenna is important in order to gain a reliable antenna factor. Direct feed biconical antenna has low uncertainty because balun can be eliminated in the design. Furthermore, the biconical antenna has fix phase center.
Syarfa Zahirah Sapuan +2 more
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Journal of Mathematical Physics, 1982
The modal solution to a biconical receiving antenna with arbitrary arm angles and lengths is presented in the form of sums over special functions; sums which are exact in the sense that no electromagnetic approximations are made. The antenna load is confined within a sphere of small radius centered at the apices of the cones. The analytical formulation
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The modal solution to a biconical receiving antenna with arbitrary arm angles and lengths is presented in the form of sums over special functions; sums which are exact in the sense that no electromagnetic approximations are made. The antenna load is confined within a sphere of small radius centered at the apices of the cones. The analytical formulation
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Analysis of biconical microstrip antennas
IEE Proceedings H Microwaves, Antennas and Propagation, 1992Biconical microstrip antennas having a conical patch over a conical substrate are investigated. Analytical expressions for the field distribution inside the conical cavity are developed in a spherical coordinate system and used to determine the eigenvalues of the resonant modes. It is found that, in addition to the axially symmetric modes, TE modes can
Y. Lin, L. Shafai
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On the Theory of Biconical Antennas
Journal of Applied Physics, 1948The investigation contained in this paper gives a general treatment of the theory of biconical antennas based upon Smith's formulation of the problem. For the case of small-angle cones, an expression of the effective load admittance is obtained which is the same one that Schelkunoff derived based upon two rather ingenious methods, both of which ...
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An Ultra-Wideband Bicone Antenna
2006 IEEE International Conference on Ultra-Wideband, 2006An ultra-wideband bicone antenna is developed to cover the 25 MHz to 6 GHz frequency band with a minimum gain at the horizon greater than -5 dBi (>100 MHz) to -10 dBi (25-100 MHz) over this frequency range and a VSWR falling between 2:1 and 3:1. This bicone has a radiating aperture that is 2 inches in diameter and 44 inches long.
Donald N. Black, Theresa A. Brunasso
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Characteristics of biconical microstrip antennas
Antennas and Propagation Society Symposium 1991 Digest, 2002Characteristics of biconical microstrip antennas asymmetrically excited by a coaxial probe feed are studied. The antenna consists of a conducting cone cap on a grounded cone separated by an electrically thin dielectric. A study of the theta -dependent eigenvalues nu of the spherical wave functions in the omega direction has shown that there is a unique
Y. Lin, L. Shafai
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Characterization of biconical transmitting antennas
Radio Science, 1991We have obtained a general, numerical solution of an ideal biconical transmitting antenna, with arbitrary arm length and conic angle. The solution evaluates the field coefficients associated with the electric multipolar expansion terms both within the antenna region and external to it; the set must necessarily be truncated, and we truncate our set with
Dale M. Grimes +2 more
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