Author: R. C. Rudduck
Publisher:
ISBN:
Category : Diffraction
Languages : en
Pages : 76

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 438

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Book Description

Author: Edward V. Jull
Publisher: IET
ISBN: 9780906048528
Category : Science
Languages : en
Pages : 194

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Book Description
Two alternative methods of aperture antenna analysis are described in this book.

Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 1096

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Book Description

Author: Richard Henry Clarke
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 300

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Book Description

Author: Warren L. Stutzman
Publisher: John Wiley & Sons
ISBN: 0470576642
Category : Technology & Engineering
Languages : en
Pages : 848

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Book Description
Stutzman's 3rd edition of Antenna Theory and Design provides a more pedagogical approach with a greater emphasis on computational methods. New features include additional modern material to make the text more exciting and relevant to practicing engineers; new chapters on systems, low-profile elements and base station antennas; organizational changes to improve understanding; more details to selected important topics such as microstrip antennas and arrays; and expanded measurements topic.

Author: Shi-chuan Lee
Publisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 88

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Book Description
The application of impedance loading techniques for the reduction of backscatter from radar targets were studied. The hybrid methods which combine the GTD and the moment method were used to analyze the backscattering from various geometries such as impedance loaded infinite wedge and a two-dimensional wing model. The effect of both the trailing and the leading edge was considered by using a two-dimensional wing model. The edge diffraction source can be considerably reduced over a 3:1 frequency band for the two-dimensional case. The square plate with a loaded slot was analyzed by a wire grid model. The backscatter reduction of the square plate can be achieved at least over a 2:1 frequency band.

Author: Constantine A. Balanis
Publisher:
ISBN:
Category : Diffraction
Languages : en
Pages : 84

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Book Description
A hybrid solution employing wedge diffraction and creeping wave theories is used to compute the radiation patterns of axial and circumferential slots in the principal planes (equatorial and elevation) on conducting cylinders of finite and infinite lengths. The slots are excited by parallel-plate waveguides operating in the TEM and TE10 modes. For the equatorial-plane pattern, the total field in the lit region is obtained by the superposition of two fields, that is, the wedge-diffracted and the creeping-wave fields. The wedge-diffracted field is obtained by approximating the parallel-plate --cylinder geometry with two wedges, each formed by a wall of the waveguide and a tangent plane to the cylinder surface at the edge point. The creeping-wave contribution is obtained by the use of diffraction and propagation coefficients of waves traveling around conducting curved surfaces. The total field in the shadow region is obtained solely from the creeping-wave contribution. For the elevation-plane pattern, wedge diffraction techniques for the entire pattern are employed. The main advantages of the present technique are that it can be applied to geometries where modal solutions are not possible, in numerical ranges where the convergence properties of modal expansions are relatively poor, in parametric design problems since the contribution from each field is separated, and in the analysis of antenna with finite physical sizes.

Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 2300

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Book Description

Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1576

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Book Description