LNA Design for Radio Navigation Satellite System Receivers

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dc.contributor.authorANDERSSON, ALEXANDRA
dc.contributor.departmentChalmers tekniska högskola / Institutionen för mikroteknologi och nanovetenskapsv
dc.contributor.departmentChalmers University of Technology / Department of Microtechnology and Nanoscienceen
dc.date.accessioned2019-07-03T13:10:22Z
dc.date.available2019-07-03T13:10:22Z
dc.date.issued2013
dc.description.abstractThis thesis work was performed at RUAG Space in Gothenburg aiming to design an L-band low-noise amplifier for GPS receiver applications. Compared to former design of such an LNA at RUAG improved RF performance and possibly a different amplifier topology are desired. In the case of a different amplifier topology a size reduction is of interest. Different alternatives for active components and amplifier topologies were considered and the work was focused on an AlGaAs/InGaAs pseudomorphic High Electron Mobility Transistor (pHEMT) called FPD750 from the company RF Micro Devices. Simulations of different LNA designs were performed in ADS and emphasis was put on a design including two FPD750 transistors in parallel, utilizing long source bond wires adding the extra source inductance needed for simultaneous noise and input matching. The LNA was realized as a hybrid design with bare-die transistor chips connected with bond wires and a prototype was fabricated in hardback PCB of TMM6 substrate. The final LNA has NF < 1 dB, gain of almost 20 dB and an input return loss of approximately 8 dB over the frequency band of interest (1.164-1.610 GHz). Consequently, the FPD750 transistor has potential to give low NF for L-band frequencies and is possible to use in this type of receiver application. Long source bond wires, acting as inductive source degenerations, are shown to be critical regarding high frequency stability and design of stability network needs careful consideration.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/177888
dc.language.isoeng
dc.setspec.uppsokPhysicsChemistryMaths
dc.subjectInformations- och kommunikationsteknik
dc.subjectElektroteknik och elektronik
dc.subjectTelekommunikation
dc.subjectInformation & Communication Technology
dc.subjectElectrical Engineering, Electronic Engineering, Information Engineering
dc.subjectTelecommunications
dc.titleLNA Design for Radio Navigation Satellite System Receivers
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeWireless, photonics and space engineering (MPWPS), MSc
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