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2006 | Buch

INTRODUCTION Kapitel lesen Erstes Kapitel lesen

Adaptive Low-Power Circuits for Wireless Communications

verfasst von: Aleksandar Tasić, Wouter A. Serdijn, John R. Long

Verlag: Springer Netherlands

Buchreihe : Analog Circuits and Signal Processing

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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Über dieses Buch

Adaptive radio transceivers require a comprehensive theoretical framework in order to optimize their performance. Adaptive Low-Power Circuits for Wireless Communications provides this framework with a discussion of joint optimization of Noise Figure and Input Intercept Point in receiver systems. Original techniques to optimize voltage controlled oscillators and low-noise amplifiers to minimize their power consumption while maintaining adequate system performance are also provided. The experimental results presented at the end of the book confirm the utility of the proposed techniques.

Inhaltsverzeichnis

Frontmatter
1. INTRODUCTION
Abstract
One emerging worldwide vision of communication is that wireless communications and ambient intelligence will be highly advantageous in satisfying our yearning for information at any time and anywhere. Electronics that is sensitive to people’s needs, personalized to their requirements, anticipatory of their behavior and responsive to their presence is one visionary conception of ambient intelligence [1]. Ambient intelligence technologies are expected to combine concepts of ubiquitous computing and intelligent systems. Technological breakthroughs will allow people to integrate electronics into more friendly environments: roll-up displays [2], intelligent mobiles [3], internet-enabled furniture [4]. People will relate to electronics in a more natural and comfortable way than they do now.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
2. PERFORMANCE PARAMETERS OF RF CIRCUITS
Abstract
Interdisciplinarity is essential to RF circuit design. An RF designer is a system designer, an analogue circuit designer, a microwave circuit designer, and a passive and active component designer.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
3. SPECTRUM-SIGNAL TRANSFORMATION
Abstract
For the last few decades, there haven’t been significant breakthroughs at receiver system-level design, as frequently only a few architectures have been exploited: high-IF [1,2] and zero-IF topologies [3,4], and lately low-IF topologies [5]. Even though a small number of different topologies are in use, the high-level receiver front-end characterization lacks a unique presentation, which in turn prevents research of new design strategies and architectures at the system level.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
4. SELECTION OF PERFORMANCE PARAMETERS FOR RECEIVER CIRCUITS
Abstract
A rigorous procedure to select specifications for individual blocks in a radio receiver system has not yet been established: choice of an optimal receiver specification frequently relies on the judgment of an experienced designer. In this chapter, we introduce methods for selection of performance parameters for receiver circuits.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
5. ADAPTIVITY OF LOW-NOISE AMPLIFIERS
Abstract
The wireless telecommunication transceivers of both today and the future have to be broadband [1], low power [2], and adaptive [3]. Broad bandwidth supports the high data rates demanded by emerging applications. Adaptivity accommodates varying channel conditions and application requirements, while consuming as little energy as possible ensures long talk time on one battery charge.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
6. ADAPTIVE VOLTAGE-CONTROLLED OSCILLATORS
Abstract
Concept of designing for adaptivity of oscillators is introduced in this chapter. It establishes a procedure for performance characterization of adaptive oscillators with qualitative and quantitative descriptions of the relationships and trade-offs between oscillator performance parameters.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
7. DESIGN OF ADAPTIVE VOLTAGE-CONTROLLED OSCILLATORS AND ADAPTIVE RF FRONT-ENDS
Abstract
Today’s portable communication devices enable a growing variety of applications, ranging from text messaging, telephony and audio to full video. These devices must maintain connectivity while running multiple applications, they must track position, and be wearable rather than just portable. However, the energy supply for portables is fixed by the size and weight of the batteries in a handheld device. Consequently, the current consumption of circuitry in handhelds must be reduced in order to meet these increasing functional and concurrent operational requirements. Limited gains can be made through further improvements in circuit efficiency, radio architectures, and by sharing circuit blocks wherever possible. Another potential solution is circuit adaptivity. This requires scaling of parameters such as current consumption to the demands of the signal-processing task at hand.
Aleksandar Tasić, Wouter A. Serdijn, John R. Long
Backmatter
Metadaten
Titel
Adaptive Low-Power Circuits for Wireless Communications
verfasst von
Aleksandar Tasić
Wouter A. Serdijn
John R. Long
Copyright-Jahr
2006
Verlag
Springer Netherlands
Electronic ISBN
978-1-4020-5250-7
Print ISBN
978-1-4020-5249-1
DOI
https://doi.org/10.1007/1-4020-5250-2

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