Download or read book Additional Computed Radiation Patterns of Log periodic Antennas Over Lossy Plane Ground written by Mark T. Ma and published by . This book was released on 1968 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two models of log-periodic dipole arrays over several types of ground are studied. The total field above the ground is computed and plotted for each ground with frequency, array height, and orientation of the array as the varying parameters.

Download or read book Computed Radiation Patterns of Log periodic Antennas Over Lossy Plane Ground written by Mark T. Ma and published by . This book was released on 1967 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four different orientations of a log-periodic dipole array of 11 elements over several types of ground are studied. With the xy-plane always treated as the flat ground, they are called 1) the x-array when dipole elements are parallel with the x-axis and the array axis is parallel with they-axis, 2) the y-array when dipoles are parallel with the y-axis and the array axis is coincident with the z-axis, 3) the z-array when dipoles are parallel with the z-axis and the array axis is parallel with the y-acix, and 4) the z=Ay=array when dipoles are parallel with the x-axis and the array axis makes an angle with the z-axis.

Download or read book Computed Radiation Patterns of Log periodic Antennas Over Lossy Plane Ground written by Mark T. Ma and published by . This book was released on 1967 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computed Radiation Patterns of Log periodic Antennas Over Lossy Plane Ground written by and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Power Gains for Antennas Over Lossy Plane Ground written by Mark T. Ma and published by . This book was released on 1969 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical power-gain formulas for 13 different antenna models above a flat homogeneous lossy ground are derived in terms of frequency, antenna geometrics, and ground constants. The radiation resistance required in the formulation is calculated with an assumed sinusoidal current distribution.

Download or read book Scientific and Technical Publications of the ESSA Research Laboratories written by and published by . This book was released on 1966 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Approach for Predicting Radiation Patterns of HF VHF Antennas Over Irregular Terrain written by Valdis V. Liepa and published by . This book was released on 1967 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of using physical optics approximation for computing radiation patterns of ground-based HF-VHF antennas in the presence of known ground irregularities is investigated. A computer program was written for physical optics formulation to evaluate the composite radiation patterns of a line source above an irregular, but deterministic, perfectly conducting surface. For the special case of a line source above a perfectly conducting plane with semicylindrical boss,the exact field expressions are derived, and the numerical results are compared with those obtained by physical optics for the same geometry. An error criterion that gives a meaningful error estimate at both the maxima and minima values of the radiation pattern is formulated and applied to the computed result. It is concluded that physical optics approximations can be used for predicting the radiation patterns of ground-based HF-VHF antennas.

Download or read book The United States Department of Commerce Publications Catalog and Index Supplement written by United States. Department of Commerce and published by . This book was released on 1968 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1970 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1966 with total page 1320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1964 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog United States Public Documents written by United States. Superintendent of Documents and published by . This book was released on 1968 with total page 1716 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Download or read book National Union Catalog written by and published by . This book was released on 1973 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.

Download or read book Journal of Electrical Engineering written by and published by . This book was released on 1970 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1968 with total page 1544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The National Union Catalogs 1963 written by and published by . This book was released on 1964 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1973 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt: