The NTIS website and supporting ordering systems are undergoing a major upgrade from 8PM on September 25th through approximately October 6. During that time, much of the functionality, including subscription and product ordering, shipping, etc., will not be available. You may call NTIS at 1-800-553-6847 or (703) 605-6000 to place an order but you should expect delayed shipment. Please do NOT include credit card numbers in any email you might send NTIS.
Documents in the NTIS Technical Reports collection are the results of federally funded research. They are directly submitted to or collected by NTIS from Federal agencies for permanent accessibility to industry, academia and the public.  Before purchasing from NTIS, you may want to check for free access from (1) the issuing organization's website; (2) the U.S. Government Printing Office's Federal Digital System website http://www.gpo.gov/fdsys; (3) the federal government Internet portal USA.gov; or (4) a web search conducted using a commercial search engine such as http://www.google.com.
Accession Number ADA566251
Title Tensor Impedance Surfaces.
Publication Date Nov 2010
Media Count 5p
Personal Author A. Kabakian
Abstract We have investigated and determined how the tensor properties of an impedance surface can be shaped to control and steer surface waves in a very general way, all the while preserving phase information. Two findings made this possible. First, it was discovered through eigenvalue analysis that a TM or TE surface bound wave tends to favor strongly propagation along one of the principal axes of its tensor impedance matrix. This is illustrated by the series of simulations shown in Figure 1 for the case of a TM wave, which favors propagation along the shorter principal axis.
Keywords Impedance
Propagation
Surface waves
Tensors
Wave propagation

 
Source Agency Non Paid ADAS
NTIS Subject Category 72B - Algebra, Analysis, Geometry, & Mathematical Logic
46 - Physics
Corporate Author Hughes Research Labs., Malibu, CA.
Document Type Technical report
Title Note Final performance rept. 30 Sep 2009-30 Nov 2010.
NTIS Issue Number 1306
Contract Number FA9550-09-C-0198

Science and Technology Highlights

See a sampling of the latest scientific, technical and engineering information from NTIS in the NTIS Technical Reports Newsletter

Acrobat Reader Mobile    Acrobat Reader