Nondestructive Electrical Characterization of Materials at  Microwave Frequencies
{'Code': '07010000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'ECCS', 'LongName': 'Div Of Electrical, Commun & Cyber Sys'}}
{'SignBlockName': 'Kristen M. Biggar, N-BioS', 'PO_EMAI': None, 'PO_PHON': None}
This research is directed towards developing suitable measurement               methods and related computer software for nondestructive                        characterization of the complex permittivity of materials at UHF and            microwave frequencies.  An open-ended coaxial line will be used to              make permittivity measurements.  A stationary variational formulation           for the aperture impedance of the coaxial opening on a ground plane             will be used to relate its input reflection coefficient with the                electrical properties of the sample medium.  To start with, large               sample media will be considered.  Thin dielectric sheet materials will          be considered later.  The fourier transform method will be used to              solve the case of thin dielectric sheet materials, and possibilities            of the surface wave excitation will be considered.
{'FirstName': 'Devendra', 'LastName': 'Misra', 'PI_MID_INIT': 'K', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Devendra K Misra', 'EmailAddress': 'misra@uwm.edu', 'NSF_ID': '000320693', 'StartDate': '07/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Wisconsin-Milwaukee', 'CityName': 'MILWAUKEE', 'ZipCode': '532113188', 'PhoneNumber': '4142294853', 'StreetAddress': '3203 N DOWNER AVE # 273', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Wisconsin', 'StateCode': 'WI', 'CONGRESSDISTRICT': '04', 'CONGRESS_DISTRICT_ORG': 'WI04', 'ORG_UEI_NUM': 'JBQ9M3PLFDP5', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF WISCONSIN SYSTEM', 'ORG_PRNT_UEI_NUM': None}
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