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Compontent Tolerance Effect on Ultra-Wideband Low-Noise Amplifier Performance
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.ORCID iD: 0000-0003-2117-1178
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
2010 (English)In: IEEE Transactions on Advanced Packaging, ISSN 1521-3323, E-ISSN 1557-9980, Vol. 33, no 3, 660-668 p.Article in journal (Refereed) Published
Abstract [en]

A study of the component tolerances on an ultra-wideband low-noise amplifier designed on a conventional printed circuit board is presented in this paper. The low-noise amplifier design employs dual-section input and output microstrip matching networks for wideband operation with a low noise figure and a flat power gain. Firstly, the effect of passive component and manufacturing process tolerances on the low-noise amplifier performance is theoretically studied by means of sensitivity analyses. Secondly, simulation and measurement results are presented for verification of the analytical results. It is shown that, compared with a lumped matching network design, a microstrip matching network design significantly reduces the ultra-wideband low-noise amplifier sensitivity to component tolerances.

Place, publisher, year, edition, pages
IEEE , 2010. Vol. 33, no 3, 660-668 p.
Keyword [en]
Low-noise amplifier, matching networks, sensitivity analysis, ultrawideband, UWB
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-53604DOI: 10.1109/TADVP.2010.2041348ISI: 000286011100010OAI: diva2:290139

©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Adriana Serban, Magnus Karlsson and Shaofang Gong, Compontent Tolerance Effect on Ultra-Wideband Low-Noise Amplifier Performance, 2011, IEEE Transactions on Advanced Packaging, (33), 3, 660-668.

Available from: 2010-01-26 Created: 2010-01-26 Last updated: 2016-01-07Bibliographically approved
In thesis
1. Ultra-Wideband Low-Noise Amplifier andSix-Port Transceiver for High Speed DataTransmission
Open this publication in new window or tab >>Ultra-Wideband Low-Noise Amplifier andSix-Port Transceiver for High Speed DataTransmission
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Today’s data rates in wired networks can reach 100 Gbit/s using optical fiber while data rates in wireless networks are much lower - tens of Mbit/s for 3G mobile communication and 480 Mbit/s for ultra-wideband (UWB) short range wireless communications. This difference in data rates can mainly be explained by the limited allowed frequency spectrum, the nature of the radio signal and the high requirements imposed on all hardware designed for high speed and wideband wireless communications. However, the demand on wireless commercial applications at competitive costs is growing. The first step in regulations allowing higher data rates for wireless communications was taken in 2002, when the Federal Communication Commission (FCC) in USA released unlicensed the 3.1-10.6 GHz frequency band restricting only the power level (maximum mean equivalent isotropic radiated power density of a UWB transmitter is -41.3 dBm/MHz) in the band 3.1-10.6 GHz. But Europe, Japan and recently China have put additional restrictions on the 3.1-4.8 GHz band. The restrictions address the problems that have raised from the coexistence and colocation of the UWB systems with other narrowband wireless systems. Thus, the 6-9 GHz band combined with an increased modulation order scheme is of large interest.

Operating at higher frequency and wider bandwidth than today’s communication technologies, with the general task of maximizing the wireless data rate while keeping the power consumption low, requires new communication system solutions and new circuit design approaches. These new solutions also require understanding of many multi-disciplinary areas which until the recent past were not directly related: from classic analog circuit design to microwave design, from modulation techniques to radio system architecture.

In this thesis, new design techniques for wide bandwidth circuits above 3 GHz are presented. After focusing on ultra-wideband low-noise amplifier (UWB LNA) design for low-power and low-cost applications, the practical implementation and measurement of a 3.1-4.8 GHz UWB LNA is addressed. Passive distributed components of microstrip transmission lines are intensively used and their contribution to the UWB LNA performance is studied. In order to verify the design methodology while extending it to the UWB radio front-end,

the UWB LNA is integrated on the same substrate with a pre-selecting filter with the frequency multiplexing function. In this way, the concept of frequencytriplexed UWB front-end is demonstrated for the Mode 1 multi-band UWB bandwidth 3.1-4.8 GHz. Using the proposed receiver front-end topology, better receiver sensitivity and selective operation can be achieved.

The later part of the thesis investigates ultra-wideband 6-9 GHz receiver and transmitter front-end topologies for Gbit/s data rates and low power consumption. To capture the advantages offered by distributed passive components, both the transmitter and receiver use the six-port correlator as the core of a passive mixer. Modelling and design of the 6-9 GHz UWB front-end transceiver include different receiver topologies and different modulation schemes. Finally, the 7.5 GHz UWB transceiver front-end is implemented and evaluated. Measurement results confirm the large potential of the six-port UWB front-end to achieve multiple Gbit/s data rates. This may open for future solutions to meet the continuous challenge of modern communication systems: higher data rates at low power consumption and low cost.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2010. 82 p.
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1295
National Category
Natural Sciences
urn:nbn:se:liu:diva-52954 (URN)978-91-7393-463-3 (ISBN)
Public defence
2010-02-12, K3, Kåkenhus, Campus Norrköping, Linköpings universitet, Norrköping, 10:00 (English)
Available from: 2010-01-26 Created: 2010-01-14 Last updated: 2015-03-18Bibliographically approved

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