Record Details

A Novel Chip Resistor Spacecloth For Radar Absorbing Materials

Electronic Theses of Indian Institute of Science

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Field Value
 
Title A Novel Chip Resistor Spacecloth For Radar Absorbing Materials
 
Creator Sudhendra, Chandrika
 
Subject Radar Materials
Spacecloth Design
Radar Absorbing Materials (RAM)
Multilayer RAM Design
Chip Resistor Network
Chip Resistor Spacecloth
Unmanned Air Vehicle (UAV)
Radar Engineering
 
Description Spacecloth design and development is vital and crucial in Radar Absorbing Materials (RAM) for achieving Low Observability in an Aircraft or an Unmanned Air Vehicle(UAV). The RAM design translates into the spacecloth design. The spacecloths form the constituent layers in a broadband Jaumann absorber in which case they have to be designed for various values of surface resistivity. The design specifications of spacecloth(s) in RAMS is well understood and documented in literature. But the design of spacecloth hitherto, has been the domain of materials' scientists wherein the specified properties of the spacecloth are achieved by an iterative, trial and error process, by mixing various constituents in different proportions to get the design specified surface resistivity in the final end-product. In an effort to bridge this gap, a novel spacecloth for RAM applications is proposed in the thesis. It is proposed that a repetitive geometrical grid network of chip resistors simulates spacecloth. The sheet resistivity of the spacecloth is derived by analyzing various geometries like square, rectangle, triangle and hexagonal grids. The transmission and reflection loss for the chip resistor spacecloth is derived. The design of chip resistor spacecloths for operation at S and C bands is given followed by experimental verification using waveguide simulator experiments. Numerical study of multilayer RAM has been carried out with exponential taper variation of surface resistivities for constituent spacecloth layers and design curves are given for multilayer RAM both for normal and oblique incidence for TE and TM polarizations.
 
Publisher Indian Institute of Science
 
Contributor Mohanty, Atanu
 
Date 2007-05-17T07:08:40Z
2007-05-17T07:08:40Z
2007-05-17T07:08:40Z
2006-09
 
Type Thesis
 
Identifier http://etd.iisc.ernet.in/handle/2005/280
 
Language en_US
 
Rights I grant Indian Institute of Science the right to archive and to make available my thesis or dissertation in whole or in part in all forms of media, now hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.