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Design of Low-Noise Amplifiers for Ultra-Wideband Communications

Design of Low-Noise Amplifiers for Ultra-Wideband Communications
Author: Roberto Díaz Ortega
Publisher: McGraw Hill Professional
Total Pages: 129
Release: 2014-01-13
Genre: Technology & Engineering
ISBN: 0071824448

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Cutting-edge techniques for ultra-wideband, low-noise amplifier design This pioneering resource presents alternatives for implementing power- and area-efficient integrated low-noise amplifiers for ultra-wideband communications. Design methodologies for distributed amplifiers, feedback amplifiers, inductor structures with reduced area, and inductorless techniques are discussed. Cowritten by international experts in industry and academia, this book addresses the state of the art in integrated circuit design in the context of emerging systems. Design of Low-Noise Amplifiers for Ultra-Wideband Communications covers: Ultra-wideband overview and system approach Distributed amplifiers Wideband low-noise amplifiers Feedback wideband low-noise amplifiers Inductorless techniques


Design an Ultra Wideband Low Noise Amplifier for 6 GHz Applications

Design an Ultra Wideband Low Noise Amplifier for 6 GHz Applications
Author: Jitendra Mishra
Publisher: LAP Lambert Academic Publishing
Total Pages: 76
Release: 2014-05-21
Genre:
ISBN: 9783659537400

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In recent years, down scaling in CMOS advanced technologies has provided high performance in the digital circuits and reduced cost thereby meeting to a large extent the increasing demand of wireless communication products. With this technology advancement, the unity-current gain frequency of CMOS technology is now over several tens of GHz making the realization of system on-chip solution possible which turns to further reduced cost. The concept of the RFIC design needed for the design of low noise amplifier such as gain, noise, stability, linearity, power consumption etc is discussed in the report. An overview has been given on different LNA architecture, their advantages and disadvantages have also been discussed.The designed circuit is simulated with the help of specture simulator from cadence design system using UMC .18um CMOS technology. After the simulation we got the simulated result of low noise amplifier as forward voltage gain(S21) of 18.53dB, noise figure is 1.8dB and minimum noise figure is 1.6dB, input reflection coefficient (S11) is -24dB, output reflection coefficient(S22) is -15dB, stability factor (Kf) is 4, IIP3 -10 dBm by using power supply voltage of 1.8v.


Design of Low Noise Amplifier for Ultra-wideband Applications

Design of Low Noise Amplifier for Ultra-wideband Applications
Author: Danh T. Vo
Publisher:
Total Pages: 96
Release: 2009
Genre:
ISBN:

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The recent surge in the demand for low power portable wireless electronics that can offer extremely high data rates has resulted in much active research in Ultra-Wideband (UWB) systems. UWB is widely recognized as a promising technology for high data rate, short-range applications with precise time resolution and high energy efficiency. All these benefits originate from the wideband characteristic of the transmitted/received impulse signals in an UWB system. With current technology, UWB can offer data rates up to 480 Mbps and its operational frequency spectrum is between 3.1 and 10.6 GHz. However, the wideband operation of UWB systems imposes many design challenges that have not been explored before in the traditional narrowband ones. This research is focused on the analysis and design of a low noise amplifier (LNA) for UWB applications. First, two popular narrowband topologies based on inductively degenerated common-source and common-gate configurations are introduced. A comparison between these two topologies is also presented. Then, several wideband LNA topologies are presented and analyzed to determine their suitability for wideband operation. The main emphasis is on input matching, voltage gain, noise figure, and process variation tolerance. Finally, a design procedure is proposed. Examples of applying this procedure to implement a single-ended and differential multistage LNA in 65 nm CMOS process are also given. Both LNAs are designed to have a gain of at least 45 dB, a noise figure of less than 8 dB and an S11 of better than -10 dB while drawing less than 10 mA from a 1.3 V power supply. The LNA's operating frequency is 8.5 GHz.


Wideband Low Noise Amplifiers Exploiting Thermal Noise Cancellation

Wideband Low Noise Amplifiers Exploiting Thermal Noise Cancellation
Author: Federico Bruccoleri
Publisher: Springer Science & Business Media
Total Pages: 191
Release: 2006-03-30
Genre: Technology & Engineering
ISBN: 1402031882

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Low Noise Amplifiers (LNAs) are commonly used to amplify signals that are too weak for direct processing for example in radio or cable receivers. Traditionally, low noise amplifiers are implemented via tuned amplifiers, exploiting inductors and capacitors in resonating LC-circuits. This can render very low noise but only in a relatively narrow frequency band close to resonance. There is a clear trend to use more bandwidth for communication, both via cables (e.g. cable TV, internet) and wireless links (e.g. satellite links and Ultra Wideband Band). Hence wideband low-noise amplifier techniques are very much needed. Wideband Low Noise Amplifiers Exploiting Thermal Noise Cancellation explores techniques to realize wideband amplifiers, capable of impedance matching and still achieving a low noise figure well below 3dB. This can be achieved with a new noise cancelling technique as described in this book. By using this technique, the thermal noise of the input transistor of the LNA can be cancelled while the wanted signal is amplified! The book gives a detailed analysis of this technique and presents several new amplifier circuits. This book is directly relevant for IC designers and researchers working on integrated transceivers. Although the focus is on CMOS circuits, the techniques can just as well be applied to other IC technologies, e.g. bipolar and GaAs, and even in discrete component technologies.


Introduction of Low Noise Amplifier for Ultra-wideband Radar Receiver

Introduction of Low Noise Amplifier for Ultra-wideband Radar Receiver
Author: Shu Zhang
Publisher:
Total Pages: 91
Release: 2010
Genre: Electronic dissertations
ISBN:

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In recent years, taking care of the older population demands a greater degree of versatility in healthcare. Automatic monitoring devices and sensors can help senior citizens achieve greater autonomy, and, if a health event arises, alert healthcare providers [30]. We make use of Ultra Wideband (UWB) technology to make an automatic monitoring system for healthcare monitoring. Radar is a different direction than present research going on at the University of Missouri in that present research uses cameras, sound and movement sensors to monitor subjects. In this thesis, I did work on the receiver part of this UWB system. In our system the radar signal is reflected by a person and we use an antenna to receive it. The received signal gives information on identity, location and movement of the subject. My work is to provide a novel low-noise Amplifier (LNA) design. Major contributions include: Analysis of parameters of an LNA design which represent the important characteristics of for an ultra-wideband short range radar system. Comparison of classic LNAs and documenting of techniques to design our new LNA. Analysis of noise reduction methods from the comparison LNAs in literature and a description of the LNA design selected for this project. Presentation of the benefits of the selected LNA topology, the common gate amplifier and simulation analysis.


Ultra-wideband Positioning Systems

Ultra-wideband Positioning Systems
Author: Zafer Sahinoglu
Publisher: Cambridge University Press
Total Pages: 271
Release: 2008-09-04
Genre: Technology & Engineering
ISBN: 1139472313

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Position estimation of wireless devices has many applications in short-range networks. Ultra-wideband (UWB) signals provide accurate positioning capabilities that can be harnessed in wireless systems to realise these applications. This text provides detailed coverage of UWB positioning systems, offering comprehensive treatment of signal and receiver design for ranging, range estimation techniques, theoretical performance bounds, ranging algorithms and protocols. Beginning with a discussion of the potential applications of wireless positioning, and investigating UWB signals for such applications, later chapters establish a signal processing framework for analysing UWB positioning and ranging systems. The recent IEEE 802.15.4a standard related to UWB is also studied in detail. Each chapter contains examples, problems and Matlab scripts to help readers grasp key concepts. This is an ideal text for graduate students and researchers in electrical and computer engineering, and practitioners in the communications industry, particularly those in wireless communications. Further resources are available at www.cambridge.org/9780521873093.