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Architectures and Synthesizers for Ultra-low Power Fast Frequency-Hopping WSN Radios

2010-11-19 Technology & Engineering
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Release : 2010-11-19
Genre : Technology & Engineering
Kind : eBook
Book Rating : 837/5 ( reviews)

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Book Synopsis Architectures and Synthesizers for Ultra-low Power Fast Frequency-Hopping WSN Radios by : Emanuele Lopelli

Download or read book Architectures and Synthesizers for Ultra-low Power Fast Frequency-Hopping WSN Radios written by Emanuele Lopelli. This book was released on 2010-11-19. Available in PDF, EPUB and Kindle. Book excerpt: Wireless sensor networks have the potential to become the third wireless revolution after wireless voice networks in the 80s and wireless data networks in the late 90s. Unfortunately, radio power consumption is still a major bottleneck to the wide adoption of this technology. Different directions have been explored to minimize the radio consumption, but the major drawback of the proposed solutions is a reduced wireless link robustness. The primary goal of Architectures and Synthesizers for Ultra-low Power Fast Frequency-Hopping WSN Radios is to discuss, in detail, existing and new architectural and circuit level solutions for ultra-low power, robust, uni-directional and bi-directional radio links. Architectures and Synthesizers for Ultra-low Power Fast Frequency-Hopping WSN Radios guides the reader through the many system, circuit and technology trade-offs he will be facing in the design of communication systems for wireless sensor networks. Finally, this book, through different examples realized in both advanced CMOS and bipolar technologies opens a new path in the radio design, showing how radio link robustness can be guaranteed by techniques that were previously exclusively used in radio systems for middle or high end applications like Bluetooth and military communications while still minimizing the overall system power consumption.

CMOS Single Chip Fast Frequency Hopping Synthesizers for Wireless Multi-Gigahertz Applications

2007-03-14 Technology & Engineering
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Release : 2007-03-14
Genre : Technology & Engineering
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis CMOS Single Chip Fast Frequency Hopping Synthesizers for Wireless Multi-Gigahertz Applications by : Taoufik Bourdi

Download or read book CMOS Single Chip Fast Frequency Hopping Synthesizers for Wireless Multi-Gigahertz Applications written by Taoufik Bourdi. This book was released on 2007-03-14. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the authors outline detailed design methodology for fast frequency hopping synthesizers for RF and wireless communications applications. There is great emphasis on fractional-N delta-sigma based phase locked loops from specifications, system analysis and architecture planning to circuit design and silicon implementation. The developed techniques in the book can help in designing very low noise, high speed fractional-N frequency synthesizers.

Design and Implementation of Frequency Synthesizers for 3-10 Ghz Mulitband OFDM UWB Communication

2010
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Release : 2010
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Book Synopsis Design and Implementation of Frequency Synthesizers for 3-10 Ghz Mulitband OFDM UWB Communication by : Chinmaya Mishra

Download or read book Design and Implementation of Frequency Synthesizers for 3-10 Ghz Mulitband OFDM UWB Communication written by Chinmaya Mishra. This book was released on 2010. Available in PDF, EPUB and Kindle. Book excerpt: The allocation of frequency spectrum by the FCC for Ultra Wideband (UWB) communications in the 3.1-10.6 GHz has paved the path for very high data rate Gb/s wireless communications. Frequency synthesis in these communication systems involves great challenges such as high frequency and wideband operation in addition to stringent requirements on frequency hopping time and coexistence with other wireless standards. This research proposes frequency generation schemes for such radio systems and their integrated implementations in silicon based technologies. Special emphasis is placed on efficient frequency planning and other system level considerations for building compact and practical systems for carrier frequency generation in an integrated UWB radio. This work proposes a frequency band plan for multiband OFDM based UWB radios in the 3.1-10.6 GHz range. Based on this frequency plan, two 11-band frequency synthesizers are designed, implemented and tested making them one of the first frequency synthesizers for UWB covering 78% of the licensed spectrum. The circuits are implemented in 0.25[mu]m SiGe BiCMOS and the architectures are based on a single VCO at a fixed frequency followed by an array of dividers, multiplexers and single sideband (SSB) mixers to generate the 11 required bands in quadrature with fast hopping in much less than 9.5 ns. One of the synthesizers is integrated and tested as part of a 3-10 GHz packaged receiver. It draws 80 mA current from a 2.5 V supply and occupies an area of 2.25 mm2. Finally, an architecture for a UWB synthesizer is proposed that is based on a single multiband quadrature VCO, a programmable integer divider with 50% duty cycle and a single sideband mixer. A frequency band plan is proposed that greatly relaxes the tuning range requirement of the multiband VCO and leads to a very digitally intensive architecture for wideband frequency synthesis suitable for implementation in deep submicron CMOS processes. A design in 130nm CMOS occupies less than 1 mm2 while consuming 90 mW. This architecture provides an efficient solution in terms of area and power consumption with very low complexity.

Wireless Technologies

2017-12-19 Technology & Engineering
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Release : 2017-12-19
Genre : Technology & Engineering
Kind : eBook
Book Rating : 202/5 ( reviews)

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Book Synopsis Wireless Technologies by : Krzysztof Iniewski

Download or read book Wireless Technologies written by Krzysztof Iniewski. This book was released on 2017-12-19. Available in PDF, EPUB and Kindle. Book excerpt: Advanced concepts for wireless technologies present a vision of technology that is embedded in our surroundings and practically invisible. From established radio techniques like GSM, 802.11 or Bluetooth to more emerging technologies, such as Ultra Wide Band and smart dust motes, a common denominator for future progress is the underlying integrated circuit technology. Wireless Technologies responds to the explosive growth of standard cellular radios and radically different wireless applications by presenting new architectural and circuit solutions engineers can use to solve modern design problems. This reference addresses state-of-the art CMOS design in the context of emerging wireless applications, including 3G/4G cellular telephony, wireless sensor networks, and wireless medical application. Written by top international experts specializing in both the IC industry and academia, this carefully edited work uncovers new design opportunities in body area networks, medical implants, satellite communications, automobile radar detection, and wearable electronics. The book is divided into three sections: wireless system perspectives, chip architecture and implementation issues, and devices and technologies used to fabricate wireless integrated circuits. Contributors address key issues in the development of future silicon-based systems, such as scale of integration, ultra-low power dissipation, and the integration of heterogeneous circuit design style and processes onto one substrate. Wireless sensor network systems are now being applied in critical applications in commerce, healthcare, and security. This reference, which contains 25 practical and scientifically rigorous articles, provides the knowledge communications engineers need to design innovative methodologies at the circuit and system level.

Architectures for RF Frequency Synthesizers

2002-06-30 Education
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Release : 2002-06-30
Genre : Education
Kind : eBook
Book Rating : 205/5 ( reviews)

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Book Synopsis Architectures for RF Frequency Synthesizers by : Cicero S. Vaucher

Download or read book Architectures for RF Frequency Synthesizers written by Cicero S. Vaucher. This book was released on 2002-06-30. Available in PDF, EPUB and Kindle. Book excerpt: This text describes a conceptual framework for analyzing the performance of PLL frequency synthesizers, and presents optimization procedures for the different performance aspects. It contains basic information and in-depth knowledge, widely illustrated with practical design examples used in industrial products.

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