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dc.contributor.authorCunningham, Michael Lawrenceen_US
dc.date.accessioned2017-07-21T06:00:22Z
dc.date.available2017-07-21T06:00:22Z
dc.date.issued2016-01-27en_US
dc.identifier.othervt_gsexam:7028en_US
dc.identifier.urihttp://hdl.handle.net/10919/78388
dc.description.abstractAs the oil industry continues to drill deeper to reach new wells, electronics are being required to operate at extreme pressures and temperatures. Coupled with substantial real-time data targets, the need for robust high speed electronics is quickly on the rise. This paper presents a high temperature wideband low noise amplifier (LNA) with zero temperature coefficient maximum available gain (ZTCMAG) biasing for a downhole communication system. The proposed LNA is designed and prototyped using 0.25μm GaN on SiC RF transistor technology, which is chosen due to the high junction temperature capability. Measurements show that the proposed LNA can operate reliably up to an ambient temperature of 230°C with a minimum noise figure (NF) of 2.0 dB, gain of 16.1 dB, and P1dB of 19.1 dBm from 230.5MHz — 285.5MHz. The maximum variation with temperature from 25°C to 230°C is 1.53dB for NF and 0.65dB for gain.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjecthigh temperatureen_US
dc.subjectextreme environmenten_US
dc.subjectlow noise amplifieren_US
dc.subjectGaN on SiCen_US
dc.subjectdownhole communications systemen_US
dc.titleA High Temperature Wideband Low Noise Amplifieren_US
dc.typeThesisen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical Engineeringen_US
dc.contributor.committeechairHa, Dong Samen_US
dc.contributor.committeechairKoh, Kwang-Jinen_US
dc.contributor.committeememberLu, Guo Quanen_US


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