ROW: (Career) - Slow-Wave Characteristics of Modulation-    Doped A1GaAs/GaAs Heterostructures
{'Code': '07010000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'ECCS', 'LongName': 'Div Of Electrical, Commun & Cyber Sys'}}
{'SignBlockName': 'Cassandra Queen', 'PO_EMAI': 'cqueen@nsf.gov', 'PO_PHON': '7032925383'}
This is a one-year pilot study to investigate the slow-wave                     characteristics of modulated-doped A1GaAs/GaAs heterostructures.  The           objective of this project is to experimentally determine the                    feasibility of utilizing A1GaAs/GaAs Schottky barriers as phase                 shifters, attenuator, and switches in the microwave/millimeter wave             regime.  Combined with the promising modulation-doped field-effect              transistor technology, integration of compatible active and passive             elements is of great significance in the development of                         microwave/millimeter wave monolithic integrated circuits.  High quality         A1GaAs/GaAs heterostructure will be grown by OMCVD and characterized by         electrical and optical methods.  Slow-wave devices in microstrip and            coplanar waveguide configurations will be fabricated for preliminary            studies.  DC and microwave measurements will be made with frequency             characteristics over as broad a range as possible.  These results will          provide a basis for future design of slow-wave devices using                    heterostructure materials.
{'FirstName': 'Kei', 'LastName': 'Lau', 'PI_MID_INIT': 'M', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Kei M Lau', 'EmailAddress': 'lau@ecs.umass.edu', 'NSF_ID': '000383919', 'StartDate': '09/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Massachusetts Amherst', 'CityName': 'AMHERST', 'ZipCode': '010039252', 'PhoneNumber': '4135450698', 'StreetAddress': '101 COMMONWEALTH AVE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '02', 'CONGRESS_DISTRICT_ORG': 'MA02', 'ORG_UEI_NUM': 'VGJHK59NMPK9', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF MASSACHUSETTS', 'ORG_PRNT_UEI_NUM': None}
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[{'Code': '145600', 'Text': 'SOLID-STATE&MICROSTRUCTURE RES'}, {'Code': '912000', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8708259.xml'}