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Antennas and Propagation, IEEE Transactions on

Issue 1 • Date January 1984

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Displaying Results 1 - 19 of 19
  • [Front cover and table of contents]

    Publication Year: 1984 , Page(s): 0
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    Freely Available from IEEE
  • Editorial

    Publication Year: 1984 , Page(s): 2 - 5
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1984 , Page(s): c4
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    Freely Available from IEEE
  • Multipath interference for in-flight antenna measurements

    Publication Year: 1984 , Page(s): 100 - 104
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (480 KB)  

    Formulations are presented to predict the pattern of interference (multipath) between direct rays and those reflected from the surface of the earth. These formulations can be used to assess the performance of ground-to-air, air-to-ground, ground-to-ground, and air-to-air communication and antenna measuring systems. Methods are also introduced to determine accurately the point of reflection and the... View full abstract»

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  • Short-wavelength target modeling

    Publication Year: 1984 , Page(s): 105 - 111
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (608 KB)  

    A simplified model has been employed to review the scattering characteristics of targets in the short wavelength limit. It is demonstrated that the reflected signal can be modeled as a diffuse plus a finite number of coherent returns (also called glints). It is then demonstrated that for accurate target location and direction it is usually necessary to decorrelate these glint returns. The conditio... View full abstract»

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  • A class of broad-band patch microstrip traveling wave antennas

    Publication Year: 1984 , Page(s): 98 - 100
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (352 KB)  

    Measured voltage standing-wave ratio (VSWR) and radiation characteristics are presented for a class of antennas consisting of nonuniform arrays of rectangular patches having variable dimensions, and excited by traveling waves on microstrip lines. The results indicate that when properly designed these linearly polarized antennas are capable of providing large bandwidths with regard to input VSWR an... View full abstract»

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  • Finite conductivity uniform GTD versus knife edge diffraction in prediction of propagation path loss

    Publication Year: 1984 , Page(s): 70 - 76
    Cited by:  Papers (176)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (624 KB)  

    Diffraction propagation over hills and ridges at VHF and UHF is commonly estimated using Fresnel knife edge diffraction. This approach has the advantage of simplicity, and for many geometries yields accurate results. However, since it neglects the shape and composition of the diffracting surface, it can in some cases yield results which are in serious disagreement with measurements. To remedy this... View full abstract»

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  • The radar cross section of dielectric disks

    Publication Year: 1984 , Page(s): 6 - 12
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (624 KB)  

    A solution is presented for the backscatter (monostatic) radar cross section of dielectric disks of arbitrary shape, thickness, and dielectric constant. The result is obtained by employing a Kirchhoff-type approximation to obtain the fields inside the disk. The internal fields induce polarization and conduction currents from which the scattered fields and the radar cross section can be computed. T... View full abstract»

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  • Determination of the current distribution on an infinite periodic structure of thin-metallic wires

    Publication Year: 1984 , Page(s): 93 - 95
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (288 KB)  

    The singular integral equation of the diffraction by thin metallic wires is used to determine the current distribution on an infinite periodic structure in one dimension. The periodic pattern can be constituted by thin wires, joined or not between the cells. This method is specifically applied to a meander line. The induced current-distribution on this structure illuminated by a plane wave of any ... View full abstract»

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  • Synthesis of offset dual shaped subreflector antennas for control of Cassegrain aperture distributions

    Publication Year: 1984 , Page(s): 86 - 92
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (888 KB)  

    Many existing large ground reflector antennas have been designed as Cassegrain systems-i.e., paraboloid/hyperboloid combinations. Other large ground antennas are simply paraboloid designs. Upgrading the gain of these systems to a gain comparable to that obtainable with a dual shaped reflector antenna system has been an important and costly objective of many such ground stations. A potentially econ... View full abstract»

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  • A tetrahedral modeling method for electromagnetic scattering by arbitrarily shaped inhomogeneous dielectric bodies

    Publication Year: 1984 , Page(s): 77 - 85
    Cited by:  Papers (282)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (808 KB)  

    A method for calculating the electromagnetic scattering from and internal field distribution of arbitrarily shaped, inhomogeneous, dielectric bodies is presented. A volume integral equation is formulated and solved by using the method of moments. Tetrahedral volume elements are used to model a scattering body in which the electrical parameters are assumed constant in each tetrahedron. Special basi... View full abstract»

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  • Scattering by a rotating conducting sphere

    Publication Year: 1984 , Page(s): 95 - 98
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (408 KB)  

    The scattering of a plane wave by a rotating sphere with finite conductivity is investigated. The problem is solved by means of the "instantaneous rest-frame" hypothesis. It is shown that a surface current must be taken into account to calculate the jump in the tangential magnetic field at the surface of the sphere, even in the case of finite conductivity. The analytical solution shows that the in... View full abstract»

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  • Scattering by right angle dielectric wedge

    Publication Year: 1984 , Page(s): 61 - 69
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (688 KB)  

    An asymptotic solution of electromagnetic waves scattered by a right-angled dielectric wedge for plane wave incidence is obtained. Scattered far fields are constructed by waves reflected and refracted from dielectric interfaces (geometric-optical fields) and a cylindrical wave diffracted from the edge. The asymptotic edge diffracted field is obtained by adding a correction to the edge diffraction ... View full abstract»

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  • Preliminary study on offset scan-corrected reflector antenna system

    Publication Year: 1984 , Page(s): 30 - 35
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (584 KB)  

    Preliminary study on offset shaped dual reflector antenna systems has been carried out to assess the feasibility for multibeam satellite applications. The two-dimensional offset shaped reflector antenna geometry is generated by first creating the nodal points according to a bifocal condition and then connecting the nodal points by smooth curves to form the profiles of the main and subreflectors. T... View full abstract»

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  • End-fire hybrid array antennas

    Publication Year: 1984 , Page(s): 36 - 43
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (624 KB)  

    A heuristic approach useful in the design of end-fire array antennas is described. When an array is scanned "beyond end fire," the last elements of the array, in the direction of the end-fire beam, generally receive net power transmitted by other elements of the array. This received power might conceivably be recirculated and reradiated at the price of substantial complexity in the feed network. I... View full abstract»

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  • Slant path rain attenuation and path diversity statistics obtained through radar modeling of rain structure

    Publication Year: 1984 , Page(s): 54 - 60
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (664 KB)  

    Single and joint terminal slant path attenuation statistics at frequencies of 28.56 and 19.04 GHz have been derived employing a radar data base obtained over a three-year period at Wallops Island, VA. Statistics were independently obtained for path elevation angles of 20\deg , 45\deg , and View full abstract»

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  • Plane-wave diffraction by a wedge--A spectral domain approach

    Publication Year: 1984 , Page(s): 20 - 29
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (832 KB)  

    The canonical problem of plane wave diffraction by a wedge in the context of the spectral domain approach which exploits the relationship between the induced current on a scatterer and its far field is investigated. It is shown how the exact solution to the wedge diffraction problem can be manipulated in a form which enables one to interpret the far scattered field as the Fourier transform of the ... View full abstract»

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  • A new method of analysis of the near and far fields of paraboloidal reflectors

    Publication Year: 1984 , Page(s): 13 - 19
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (496 KB)  

    An analytical technique for predicting accurately the near (electric and magnetic) fields as well as the far fields of a reflector antenna with a pencil beam is presented. The technique proposed involves the near-field geometrical theory of diffraction (GTD) analysis of reflector antennas developed earlier and spherical vector mode functions. The proposed technique does not place any restriction o... View full abstract»

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  • Element pattern approach to design of dielectric windows for conformal phased arrays

    Publication Year: 1984 , Page(s): 44 - 53
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (752 KB)  

    Modal analysis is presented for the realized element gain E - and H -plane patterns for a two-dimensional circular cylindrical arrays with concentric dielectric sleeve. Numerical results indicate presence of significant surface wave effects. A design method of dielectric windows to reduce the guided wave effects is proposed.... View full abstract»

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Aims & Scope

IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas.

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Meet Our Editors

Editor-in-Chief                                                 Kwok W. Leung