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Author: Hyun-Woong Kim
Publisher:
ISBN:
Category : Amplifiers (Electronics)
Languages : en
Pages :
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Book Description
With the explosive growth of the wireless market, the demand for low-cost and highly-integrated radio frequency (RF) transceiver has been increased. Keeping up with this trend, complimentary metal-oxide-semiconductor (CMOS) has been spotlighted by virtue of its superior characteristics. However, there are challenges in achieving this goal, especially designing the transmitter portion. The objective of this research is to demonstrate the feasibility of fully integrated CMOS transmitter module which includes power amplifier (PA) and transmit/receive (T/R) switch by compensating for the intrinsic drawbacks of CMOS technology. As an effort to overcome the challenges, the high-power handling T/R switches are introduced as the first part of this dissertation. The proposed differential switch topology and feed-forward capacitor helps reducing the voltage stress over the switch devices, enabling a linear power transmission. With the high-power T/R switches, a new transmitter front-end topology - differential PA and T/R switch topology with the multi-section PA output matching network - is also proposed. The multi-stage PA output matching network assists to relieve the voltage stress over the switch device even more, by providing a low switch operating impedance. By analyzing the power performance and efficiency of entire transmitter module, design methodology for the high-power handling and efficient transmitter module is established. Finally, the research in this dissertation provides low-cost, high-power handling, and efficient CMOS RF transmitter module for wireless applications.
Author: Hyun-Woong Kim
Publisher:
ISBN:
Category : Amplifiers (Electronics)
Languages : en
Pages :
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Book Description
With the explosive growth of the wireless market, the demand for low-cost and highly-integrated radio frequency (RF) transceiver has been increased. Keeping up with this trend, complimentary metal-oxide-semiconductor (CMOS) has been spotlighted by virtue of its superior characteristics. However, there are challenges in achieving this goal, especially designing the transmitter portion. The objective of this research is to demonstrate the feasibility of fully integrated CMOS transmitter module which includes power amplifier (PA) and transmit/receive (T/R) switch by compensating for the intrinsic drawbacks of CMOS technology. As an effort to overcome the challenges, the high-power handling T/R switches are introduced as the first part of this dissertation. The proposed differential switch topology and feed-forward capacitor helps reducing the voltage stress over the switch devices, enabling a linear power transmission. With the high-power T/R switches, a new transmitter front-end topology - differential PA and T/R switch topology with the multi-section PA output matching network - is also proposed. The multi-stage PA output matching network assists to relieve the voltage stress over the switch device even more, by providing a low switch operating impedance. By analyzing the power performance and efficiency of entire transmitter module, design methodology for the high-power handling and efficient transmitter module is established. Finally, the research in this dissertation provides low-cost, high-power handling, and efficient CMOS RF transmitter module for wireless applications.
Author: Qizheng Gu
Publisher: Springer
ISBN: 3319099248
Category : Technology & Engineering
Languages : en
Pages : 368
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Book Description
This book serves as a hands-on guide to RF tunable devices, circuits and subsystems. An innovative of modeling for tunable devices and networks is described, along with a new tuning algorithm, adaptive matching network control approach, and novel filter frequency automatic control loop. The author provides readers with the necessary background and methods for designing and developing tunable RF networks/circuits and tunable RF font-ends, with an emphasis on applications to cellular communications.
Author: Yongwang Ding
Publisher: Springer Science & Business Media
ISBN: 0387238026
Category : Technology & Engineering
Languages : en
Pages : 132
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Book Description
This book focuses on high performance radio frequency integrated circuits (RF IC) design in CMOS. 1. Development of radio frequency ICs Wireless communications has been advancing rapidly in the past two decades. Many high performance systems have been developed, such as cellular systems (AMPS, GSM, TDMA, CDMA, W-CDMA, etc. ), GPS system (global po- tioning system) and WLAN (wireless local area network) systems. The rapid growth of VLSI technology in both digital circuits and analog circuits provides benefits for wireless communication systems. Twenty years ago not many p- ple could imagine millions of transistors in a single chip or a complete radio for size of a penny. Now not only complete radios have been put in a single chip, but also more and more functions have been realized by a single chip and at a much lower price. A radio transmits and receives electro-magnetic signals through the air. The signals are usually transmitted on high frequency carriers. For example, a t- ical voice signal requires only 30 Kilohertz bandwidth. When it is transmitted by a FM radio station, it is often carried by a frequency in the range of tens of megahertz to hundreds of megahertz. Usually a radio is categorized by its carrier frequency, such as 900 MHz radio or 5 GHz radio. In general, the higher the carrier frequency, the better the directivity, but the more difficult the radio design.
Author: Matthew Chung-Hin Leung
Publisher:
ISBN:
Category : Data transmission systems
Languages : en
Pages :
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Book Description
With the growing trend of wireless electronics, frequency spectrum is crowded with different applications. High data transfer rate solutions that operate in license-exempt frequency spectrum range are sought. The most promising candidate is the 60 GHz multi-giga bit transfer rate millimeter wave circuit. In order to provide a cost-effective solution, circuits designed in CMOS are implemented in a single SOC.
Author: Naveen Krishna Yanduru
Publisher:
ISBN:
Category : Integrated circuits
Languages : en
Pages : 388
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Book Description
RF receiver front-end design for the mobile terminals has become a challenging task. The need to share the receiver hardware over multiple RF frequency bands and RF standards; the drive toward reduction in external components and filters; low power consumption targets; deep sub-micron CMOS implementation for SoC applications; and high dynamic range requirements have created an imposing design challenge for the RF receiver front-end. In this research we have taken an objective look at this design challenge and addressed it at various levels.
Author: Ahmed A. Youssef
Publisher: Springer Science & Business Media
ISBN: 9048186048
Category : Technology & Engineering
Languages : en
Pages : 168
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Book Description
Nanometer CMOS RFICs for Mobile TV Applications focuses on how to break the trade-off between power consumption and performance (linearity and noise figure) by optimizing the mobile TV front-end dynamic range in three hierarchical levels: the intrinsic MOSFET level, the circuit level, and the architectural level. It begins by discussing the fundamental concepts of MOSFET dynamic range, including nonlinearity and noise. It then moves to the circuit level introducing the challenges associated with designing wide-dynamic range, variable-gain, broadband low-noise amplifiers (LNAs). The book gives a detailed analysis of a new noise-canceling technique that helps CMOS LNAs achieve a sub - 2 dB wideband noise figure. Lastly, the book deals with the front-end dynamic range optimization process from the systems perspective by introducing the active and passive automatic gain control (AGC) mechanism.
Author: Aminghasem Safarian
Publisher: Springer Science & Business Media
ISBN: 1402067224
Category : Technology & Engineering
Languages : en
Pages : 97
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Book Description
A comprehensive study of silicon-based distributed architectures in wideband circuits are presented in this book. Novel circuit architectures for ultra-wideband (UWB) wireless technologies are described. The book begins with an introduction of several transceiver architectures for UWB. The discussion then focuses on RF front-end of the UWB radio. Therefore, the book will be of interest to RF circuit designers and students.
Author: Johan Janssens
Publisher: Springer Science & Business Media
ISBN: 0792376374
Category : Computers
Languages : en
Pages : 267
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Book Description
CMOS Cellular Receiver Front-Ends: From Specification to Realization deals with the design of the receive path of a highly-integrated CMOS cellular transceiver for the GSM-1800 cellular system. The complete design trajectory is covered, starting from the documents describing the standard down to the systematic development of CMOS receiver ICs that comply to the standard. The design of CMOS receivers is tackled at all abstraction levels: from architecture level, via circuit level, down to the device level, and the other way around. Different receiver architectures are compared with respect to integratability, achievable performance and required building block specifications. The requirements of the GSM-1800 standard are mapped onto a set of measurable specifications for a highly-integrated low-IF receiver and distributed among the different building blocks. Several circuit topologies are presented that realize the main functions of the receive path. The dynamics of the elementary specifications of these circuits are explained in terms of the operating point of the involved devices. Wherever possible, this is done using analytical expressions. Based on these insights, detailed sizing procedures are developed to systematically size these RF circuits for a set of specifications. The feasibility of meeting the requirements of today's high-end cellular standards is demonstrated in a mainstream submicron CMOS technology by the development of two highly-integrated GSM-1800 receivers. The theoretical core of the book discusses the fundamental and more advanced aspects of RF CMOS design. It focuses specifically on all aspects of the design of high-performance CMOS low-noise amplifiers. Attempts are made to reconcile the analog designer's and the RF designer's point of view on how to look at submicron CMOS transistors. Special attention is given to the fallacies and pitfalls of input matching in a CMOS context. A methodology for the systematic design of CMOS low-noise amplifiers is presented which is based on a bank of analytical equations for all important LNA specifications. The method is validated by the design of a low power, extremely low noise CMOS GPS LNA.
Author: Pedro Emiliano Paro Filho
Publisher: Springer
ISBN: 331945787X
Category : Technology & Engineering
Languages : en
Pages : 180
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Book Description
This book introduces a completely novel architecture that can relax the trade-off existing today between noise, power and area consumption in a very suitable solution for advanced wireless communication systems. Through the combination of charge-domain operation with incremental signaling, this architecture gives the best of both worlds, providing the reduced area and high portability of digital-intensive architectures with an improved out-of-band noise performance given by intrinsic noise filtering capabilities. Readers will be enabled to design higher performance radio front-ends that consume less power and area, especially with respect to the transmitter and power amplifier designs, considered by many the “battery killers” on most mobile devices.
Author: Jan Crols
Publisher: Springer Science & Business Media
ISBN: 1475747845
Category : Technology & Engineering
Languages : en
Pages : 249
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Book Description
The world of wireless communications is changing very rapidly since a few years. The introduction of digital data communication in combination with digital signal process ing has created the foundation for the development of many new wireless applications. High-quality digital wireless networks for voice communication with global and local coverage, like the GSM and DECT system, are only faint and early examples of the wide variety of wireless applications that will become available in the remainder of this decade. The new evolutions in wireless communications set new requirements for the trans ceivers (transmitter-receivers). Higher operating frequencies, a lower power consump tion and a very high degree of integration, are new specifications which ask for design approaches quite different from the classical RF design techniques. The integrata bility and power consumption reduction of the digital part will further improve with the continued downscaling of technologies. This is however completely different for the analog transceiver front-end, the part which performs the interfacing between the antenna and the digital signal processing. The analog front-end's integratability and power consumption are closely related to the physical limitations of the transceiver topology and not so much to the scaling of the used technology. Chapter 2 gives a detailed study of the level of integration in current transceiver realization and analyzes their limitations. In chapter 3 of this book the complex signal technique for the analysis and synthesis of multi-path receiver and transmitter topologies is introduced.
