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Ultra-Wideband Low-Noise Amplifier andSix-Port Transceiver for High Speed DataTransmission
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology. (Kommunikationselektronik)ORCID iD: 0000-0003-2117-1178
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.
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1295
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-52954ISBN: 978-91-7393-463-3 (print)OAI: oai:DiVA.org:liu-52954DiVA: diva2:286301
Public defence
2010-02-12, K3, Kåkenhus, Campus Norrköping, Linköpings universitet, Norrköping, 10:00 (English)
Opponent
Supervisors
Available from: 2010-01-26 Created: 2010-01-14 Last updated: 2015-03-18Bibliographically approved
List of papers
1. Compontent Tolerance Effect on Ultra-Wideband Low-Noise Amplifier Performance
Open this publication in new window or tab >>Compontent Tolerance Effect on Ultra-Wideband Low-Noise Amplifier Performance
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
Keyword
Low-noise amplifier, matching networks, sensitivity analysis, ultrawideband, UWB
National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-53604 (URN)10.1109/TADVP.2010.2041348 (DOI)000286011100010 ()
Note

©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. http://dx.doi.org/10.1109/TADVP.2010.2041348

Available from: 2010-01-26 Created: 2010-01-26 Last updated: 2017-12-12Bibliographically approved
2. Six-port transceiver for 6-9 GHz ultrawideband systems
Open this publication in new window or tab >>Six-port transceiver for 6-9 GHz ultrawideband systems
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2010 (English)In: Microwave and optical technology letters (Print), ISSN 0895-2477, E-ISSN 1098-2760, Vol. 42, no 3, 740-746 p.Article in journal (Refereed) Published
Abstract [en]

An ultrawideband 6-9 GHz six-port correlator is designed and manufactured.Based on this six-port correlator, behavioral models, and true component circuit designs of a transceiver are developed to study the performance of the proposed direct conversion ultrawideband transceiver topology. A new six-port modulator with controllable impedance terminations implemented with a field effect transistor in the linear operation region is presented

Keyword
Six-port transceiver, six-port transmitter, six-port receiver, UWB systems
National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-53605 (URN)10.1002/mop.25021 (DOI)000274363700062 ()
Note
On the day of the defence day the status of this article was: Accepted.Available from: 2010-01-26 Created: 2010-01-26 Last updated: 2017-12-12
3. A Frequency-triplexed RF Front-end for Ultra-wideband Systems 3.1-4.8 GHz
Open this publication in new window or tab >>A Frequency-triplexed RF Front-end for Ultra-wideband Systems 3.1-4.8 GHz
2008 (English)In: ISAST Transactions on Electronics and Signal Processing, ISSN 1797-2329, Vol. 1, no 2, 83-88 p.Article in journal (Refereed) Published
Abstract [en]

A multi-band and ultra-wideband (UWB) 3.1-4.8 GHz receiver front-end consisting of a fully integrated filter and triplexer network, and a flat gain low-noise amplifier (LNA) is presented in this paper. The front-end utilizes a microstrip network and three combined broadside- and edge-coupled bandpass filters to connect the three sub-bands. The LNA design employs dual-section input and output microstrip matching networks for wideband operation with a flat power gain and a low noise figure. The system is fully integrated in a four-metal-layer printed circuit board. The measured power gain is 10 dB and the noise figure of the front-end is 6 dB at each center frequency of the three sub-bands. The minimum isolation between the sub-bands is -27 dB and the isolation between the non-neighboring alternate sub-bands is -52 dB. The out-of-band interferer attenuation is below -30 dB.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-12802 (URN)
Note
The status of this article was previously Submitted.Available from: 2008-01-07 Created: 2008-01-07 Last updated: 2015-03-18Bibliographically approved
4. Microstrip Bias Networks for Ultra-Wideband Systems
Open this publication in new window or tab >>Microstrip Bias Networks for Ultra-Wideband Systems
2008 (English)In: ISAST Transactions on Electronics and Signal Processing, ISSN 1797-2329, Vol. 1, no 2, 16-20 p.Article in journal (Refereed) Published
Abstract [en]

Bias networks with radio frequency (RF) chokes can be implemented using different microstrip elements. They can have different advantages in terms of bandwidth and occupied area. However, sharp discontinuities of the transfer functions have been observed in these types of bias networks. In this paper they are explained by resonances generated within the DC path of the bias network. As the resonance behavior degrades the performance of broadband RF circuits, the robustness of different bias networks against resonance was investigated. Different bias networks were fabricated and measured. Both simulation and experimental results show that broadband microstrip bias networks can be optimized to avoid or reduce the resonance phenomena.

Keyword
Bias networks, microstrip components
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-12801 (URN)
Available from: 2008-01-07 Created: 2008-01-07 Last updated: 2015-03-18Bibliographically approved
5. All-Microstrip Design of Three Multiplexed Antennas and LNA for UWB Systems
Open this publication in new window or tab >>All-Microstrip Design of Three Multiplexed Antennas and LNA for UWB Systems
2006 (English)In: Asia-Pacific Microwave Conf., December 2006, 2006, 1106-1109 p.Conference paper, Published paper (Refereed)
Abstract [en]

An ultra-wideband (UWB) 3.1-4.8 GHz radio front-end consisting of three frequency multiplexed antennas and a low-noise amplifier (LNA) is presented in this paper. Using one antenna for each sub-band and an LNA designed for maximum-flat power gain provides equal performance within the entire frequency band. Frequency multiplexing is used to combine the antennas for multi-band UWB. The LNA is optimized for wideband operation and minimum noise figure. The LNA design employs dual-section input and output matching networks. The antennas, the frequency multiplexing network, the matching networks and the bias circuit of the LNA are all implemented using microstrip lines.

Keyword
antenna arrays, frequency division multiplexing, low noise amplifiers, microstrip antennas, microwave amplifiers, microwave antennas, ultra wideband antennas, wideband amplifiers, LNA, UWB systems, bias circuit, dual-section matching networks, frequency 3.1 GHz to 4.8 GHz, frequency multiplexed antennas, microstrip design, microstrip lines, multiband UWB, ultra-wideband radio front-end
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-12798 (URN)10.1109/APMC.2006.4429602 (DOI)978-4-902339-08-6 (ISBN)
Available from: 2008-01-07 Created: 2008-01-07 Last updated: 2015-03-18Bibliographically approved
6. Radio Architecture for Parallel Processing of Extremely High Speed Data
Open this publication in new window or tab >>Radio Architecture for Parallel Processing of Extremely High Speed Data
Show others...
2009 (English)In: IEEE International Conference on Ultra-Wideband, ICUWB, Vancouver, Canada, 9-11 Sept., IEEE , 2009, 433-437 p.Conference paper, Published paper (Refereed)
Abstract [en]

Using our own-developed frequency multiplexing network, a radio architecture for parallel radio signal processing has been proposed for achieving extremely high data rate above 10 Gbit/s. To meet the high requirement on phase linearity, amplitude balance and low noise figure in a very large bandwidth, our own-developed ultra-wideband six-port correlator has been utilized for the modulator and demodulator in the radio architecture.

Place, publisher, year, edition, pages
IEEE, 2009
Keyword
radio architecture, parallel processing, wireless data, high speed
National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-53606 (URN)10.1109/ICUWB.2009.5288704 (DOI)978-1-4244-2930-1 (ISBN)
Available from: 2010-01-26 Created: 2010-01-26 Last updated: 2015-03-18Bibliographically approved
7. Six-Port Direct Carrier Modulator at 7.5 GHz for Ultra-Wideband  Appliations
Open this publication in new window or tab >>Six-Port Direct Carrier Modulator at 7.5 GHz for Ultra-Wideband  Appliations
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(English)Manuscript (preprint) (Other academic)
Abstract [en]

A 7.5 GHz direct-carrier modulator for multi-level quadrature amplitude modulation (M-QAM) using a wideband 7-8 GHz six-port correlator and four controllable impedance terminations implemented with field-effect transistors (FET) is presented in this paper. The proposed encoding schemes of the reflection-type modulator is based on equal impedance values at I and Q ports, such that Γ3 = Γ4 and Γ5 = Γ6 for every symbol in the constellation diagram. The field-effect transistors are operated at zero drain-source voltage (cold-FET). The FET-impedance termination topology includes a source resistor (RS) and a gate resistor (RG) for symmetrical spreading of the reflection coefficients around the origin. In order to validate the 7.5 GHz six-port modulator with cold-FET impedance terminations, the six-port modulator prototype has been realized on a ROGERS4350B substrate of 0.254-mm thickness and tested with a six-port demodulator (receiver). The six-port modulator was measure to have symbol rates of 10 Msymbol/s with QPSK (= 20 Mbit/s) and 250 Msymbol/s with 16-QAM (= 1 Gbit/s).

Keyword
Terms—modulator, six-port, ultra-wideband
National Category
Natural Sciences
Identifiers
urn:nbn:se:liu:diva-53608 (URN)978-1-4244-2930-1 (ISBN)
Available from: 2010-01-26 Created: 2010-01-26 Last updated: 2015-03-18Bibliographically approved

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