Author: Thomas Sugimoto
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 54
Book Description
An experimental investigation of a pair of coupled linear antennas in an inhomogeneous dissipative medium was made. The medium was obtained by diffusing a water solution of NaCl into a large block of agar agar gel contained in a wooden tank. The relative dielectric constant was approximately 78 while the loss tangent could be varied from 0.13 to 3.0 at 114 MHz, the frequency used throughout the investigation. Driving point admittances and current distributions were measured with the medium inhomogeneity oriented parallel to the axes of the antennas. Self and mutual input admittances were measured as a function of the antenna length (beta h = 0.3 to 2 pi in steps of 0.1). Symmetric and antisymmetric current distributions were measured for four different antenna lengths (h/lambda = 0.25, 0.50, 0.75, and 1.0). Each measurement was repeated for three antenna separations (beta/lambda = 0.125, 0.25, and 0.50). Self and mutual driving-point admittances were measured as a function of base separation (b/lambda = 0.25 to 1.5 in steps of 0.125) for four antenna lengths (h/lambda = 0.25, 0.50, 0.75, and 1.0) with the medium inhomogeneity direction perpendicular to the antenna axes. Also studies were the effects of a medium discontinuity at the input, nonidentical elements, and input aperture size on the measured input admittance. (Author).
Experimental Study of Coupled Linear Antennas in an Inhomogeneous Dissipative Medium
Author: Thomas Sugimoto
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 54
Book Description
An experimental investigation of a pair of coupled linear antennas in an inhomogeneous dissipative medium was made. The medium was obtained by diffusing a water solution of NaCl into a large block of agar agar gel contained in a wooden tank. The relative dielectric constant was approximately 78 while the loss tangent could be varied from 0.13 to 3.0 at 114 MHz, the frequency used throughout the investigation. Driving point admittances and current distributions were measured with the medium inhomogeneity oriented parallel to the axes of the antennas. Self and mutual input admittances were measured as a function of the antenna length (beta h = 0.3 to 2 pi in steps of 0.1). Symmetric and antisymmetric current distributions were measured for four different antenna lengths (h/lambda = 0.25, 0.50, 0.75, and 1.0). Each measurement was repeated for three antenna separations (beta/lambda = 0.125, 0.25, and 0.50). Self and mutual driving-point admittances were measured as a function of base separation (b/lambda = 0.25 to 1.5 in steps of 0.125) for four antenna lengths (h/lambda = 0.25, 0.50, 0.75, and 1.0) with the medium inhomogeneity direction perpendicular to the antenna axes. Also studies were the effects of a medium discontinuity at the input, nonidentical elements, and input aperture size on the measured input admittance. (Author).
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 54
Book Description
An experimental investigation of a pair of coupled linear antennas in an inhomogeneous dissipative medium was made. The medium was obtained by diffusing a water solution of NaCl into a large block of agar agar gel contained in a wooden tank. The relative dielectric constant was approximately 78 while the loss tangent could be varied from 0.13 to 3.0 at 114 MHz, the frequency used throughout the investigation. Driving point admittances and current distributions were measured with the medium inhomogeneity oriented parallel to the axes of the antennas. Self and mutual input admittances were measured as a function of the antenna length (beta h = 0.3 to 2 pi in steps of 0.1). Symmetric and antisymmetric current distributions were measured for four different antenna lengths (h/lambda = 0.25, 0.50, 0.75, and 1.0). Each measurement was repeated for three antenna separations (beta/lambda = 0.125, 0.25, and 0.50). Self and mutual driving-point admittances were measured as a function of base separation (b/lambda = 0.25 to 1.5 in steps of 0.125) for four antenna lengths (h/lambda = 0.25, 0.50, 0.75, and 1.0) with the medium inhomogeneity direction perpendicular to the antenna axes. Also studies were the effects of a medium discontinuity at the input, nonidentical elements, and input aperture size on the measured input admittance. (Author).
An Experimental Investigation of Coupled Antennas in an Inhomogeneous Medium
Author: Thomas Tameo Sugimoto
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 446
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
Book Description
Government Reports Announcements
Author:
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1256
Book Description
Publisher:
ISBN:
Category : Technology
Languages : en
Pages : 1256
Book Description
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1232
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1232
Book Description
Government Reports Index
Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 762
Book Description
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 762
Book Description
Bibliography, with Abstracts, of AFCRL Publications from 1 January to 31 March 1971
Author:
Publisher:
ISBN:
Category : Bibliography
Languages : en
Pages : 170
Book Description
Publisher:
ISBN:
Category : Bibliography
Languages : en
Pages : 170
Book Description
Antennas in Inhomogeneous Media
Author: Janis Galejs
Publisher: Elsevier
ISBN: 1483186377
Category : Technology & Engineering
Languages : en
Pages : 312
Book Description
Antennas in Inhomogeneous Media details the methods of analyzing antennas in such inhomogeneous media. The title covers the complex geometrical configurations along with its variational formulations. The coverage of the text includes various conditions the antennas are subjected to, such as antennas in the interface between two media; antennas in compressible isotropic plasma; and linear antennas in a magnetoionic medium. The selection also covers insulated loops in lossy media; slot antennas with a stratified dielectric or isotropic plasma layers; and cavity-backed slot antennas. The book will be of great use to electrical, communications, and radio engineers.
Publisher: Elsevier
ISBN: 1483186377
Category : Technology & Engineering
Languages : en
Pages : 312
Book Description
Antennas in Inhomogeneous Media details the methods of analyzing antennas in such inhomogeneous media. The title covers the complex geometrical configurations along with its variational formulations. The coverage of the text includes various conditions the antennas are subjected to, such as antennas in the interface between two media; antennas in compressible isotropic plasma; and linear antennas in a magnetoionic medium. The selection also covers insulated loops in lossy media; slot antennas with a stratified dielectric or isotropic plasma layers; and cavity-backed slot antennas. The book will be of great use to electrical, communications, and radio engineers.
Radio Science
Author:
Publisher:
ISBN:
Category : Radio meteorology
Languages : en
Pages : 608
Book Description
Publisher:
ISBN:
Category : Radio meteorology
Languages : en
Pages : 608
Book Description
Research Studies on Electromagnetic Radiation and Antennas: A Summarizing Review
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
Book Description
Research studies on electromagnetic radiation and antennas are summarized for the period beginning November 1, 1967 and ending October 31, 1972. Brief reviews are given of work on antenna arrays, electrically thick antennas, modified dipole antennas, the end correction for monopole antennas, antennas in different media, and scattering from finite cylinders and imperfectly conducting spheres. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
Book Description
Research studies on electromagnetic radiation and antennas are summarized for the period beginning November 1, 1967 and ending October 31, 1972. Brief reviews are given of work on antenna arrays, electrically thick antennas, modified dipole antennas, the end correction for monopole antennas, antennas in different media, and scattering from finite cylinders and imperfectly conducting spheres. (Author).