A Broadband RF CMOS Frond-end for Multi-standard Wireless Communication

A Broadband RF CMOS Frond-end for Multi-standard Wireless Communication
Author: Wenxiang Huang
Publisher:
Total Pages: 107
Release: 2007
Genre: Amplifiers, Radio frequency
ISBN:
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Abstract: Recently, the demand for simultaneous global roaming and all in one wireless phones spurred the interest in developing multi-standard transceivers. These transceivers require low power, low cost and highly reliable designs. As a result, fully integrated RF transceivers have become a hot research topic. With the benefit of submicron technologies, GHz circuits can now be realized in standard MOS technologies, which will help achieve a single chip design solution for the front end. However, CMOS has some inherent limitations, which have to be circumvented using system and circuit techniques to achieve acceptable performance. This thesis deals with the RF front end of the receiver, which is an important part for the fully integrated single-chip solution of RF transceivers. The communication standards considered here are EGSM, PCS1900 and WCDMA. First, possible traditional transceiver architectures are reviewed. Traditional architectures, such as heterodyne receivers, offer excellent trade-off between selectivity and sensitivity. However, they are not suitable for a fully integrated receiver for multi-standard communication. Single homo-dyne receiver architecture, such as Zero IF or Low IF, along can't satisfy the requirements of multi-standard communication. A Zero/Low IF receiver architecture is chosen as the solution to this problem. System requirements of the receiver are discussed. The Noise and linearity requirements for the whole system and each block of system are calculated according to the specific communication standards. In an analog front end, LNA and Mixer are two important parts. Design issues such as input impedance matching and noise optimization of LNA are covered. The LNA has two gain modes to relax its linearity requirements. The flick noise and linearity of mixer are also discussed. All above blocks are designed in TSMC. 18 technology. The simulation and experimental results are presented.

Broadband RF Front-end Design for Multi-standard Receiver with High-linearity and Low-noise Techniques

Broadband RF Front-end Design for Multi-standard Receiver with High-linearity and Low-noise Techniques
Author: Ju Sung Kim
Publisher:
Total Pages:
Release: 2012
Genre:
ISBN:
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Future wireless communication devices must support multiple standards and features on a single-chip. The trend towards software-defined radio requires flexible and efficient RF building blocks which justifies the adoption of broadband receiver front-ends in modern and future communication systems. The broadband receiver front-end significantly reduces cost, area, pins, and power, and can process several signal channels simultaneously. This research is mainly focused on the analysis and realization of the broadband receiver architecture and its various building blocks (LNA, Active Balun-LNA, Mixer, and trans-impedance amplifier) for multi-standard applications. In the design of the mobile DTV tuner, a direct-conversion receiver architecture is adopted achieving low power, low cost, and high dynamic-range for DVB-H standard. The tuner integrates a single-ended RF variable gain amplifier (RFVGA), a current-mode passive mixer, and a combination of continuous and discrete-time baseband filter with built-in anti-aliasing. The proposed RFVGA achieves high dynamic-range and gain-insensitive input impedance matching performance. The current-mode passive mixer achieves high gain, low noise, and high linearity with low power supplies. A wideband common-gate LNA is presented that overcomes the fundamental trade-off between power and noise match without compromising its stability. The proposed architecture can achieve the minimum noise figure over the previously reported feedback amplifiers in common-gate configuration. The proposed architecture achieves broadband impedance matching, low noise, large gain, enhanced linearity, and wide bandwidth concurrently by employing an efficient and reliable dual negative-feedback. For the wideband Inductorless Balun-LNA, active single-to-differential architecture has been proposed without using any passive inductor on-chip which occupies a lot of silicon area. The proposed Balun-LNA features lower power, wider bandwidth, and better gain and phase balance than previously reported architectures of the same kind. A surface acoustic wave (SAW)-less direct conversion receiver targeted for multistandard applications is proposed and fabricated with TSMC 0.13?m complementary metal-oxide-semiconductor (CMOS) technology. The target is to design a wideband SAW-less direct coversion receiver with a single low noise transconductor and current-mode passive mixer with trans-impedance amplifier utilizing feed-forward compensation. The innovations in the circuit and architecture improves the receiver dynamic range enabling highly linear direct-conversion CMOS front-end for a multi-standard receiver.

Adaptive Multi-Standard RF Front-Ends

Adaptive Multi-Standard RF Front-Ends
Author: Vojkan Vidojkovic
Publisher: Springer Science & Business Media
Total Pages: 204
Release: 2008-02-07
Genre: Technology & Engineering
ISBN: 1402065345
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This book investigates solutions, benefits, limitations, and costs associated with multi-standard operation of RF front-ends and their ability to adapt to variable radio environments. Next, it highlights the optimization of RF front-ends to allow maximum performance within a certain power budget, while targeting full integration. Finally, the book investigates possibilities for low-voltage, low-power circuit topologies in CMOS technology.

A CMOS Radio-frequency Front-end for Multi-standard Wireless Communications

A CMOS Radio-frequency Front-end for Multi-standard Wireless Communications
Author: Jeongwon Cha
Publisher:
Total Pages:
Release: 2010
Genre: Metal oxide semiconductors, Complementary
ISBN:
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The explosive growth of wireless communication market has led the development of low-cost, highly-integrated wireless communication systems. Even though most blocks in the front-end have successfully been integrated by using the CMOS technology, it is still a formidable challenge to integrate the entire front-end. Thus, the objective of this research is to demonstrate the feasibility of the integrated front-end by using improved circuit techniques as well as the improved process technologies. This dissertation proposes an improved control scheme to enhance the high-power handling capability of an antenna switch. : As a part of this research, an antenna switch controller for a GaAs antenna switch was first developed to enhance the performances of the GaAs antenna switch by using the boosted control voltage. To enhance the efficiency of the front-end, efficiency improvement techniques for the antenna switch controller has also been studied. With the suggested efficiency improvement techniques, a fully-integrated antenna switch was implemented using the SOI technology, and exceeding performances over many commercial products for watt-level high-power applications have been successfully demonstrated. As an effort to improve the efficiency of a power amplifier, a linear envelope detector was also implemented, and the results show that the envelope detector is suitable for dynamic biasing of the power amplifier. The research presented in this dissertation, thus, provides a low-cost and high-performance solution for highly-integrated RF front-end used in various wireless communication systems.

High-Linearity CMOS RF Front-End Circuits

High-Linearity CMOS RF Front-End Circuits
Author: Yongwang Ding
Publisher: Springer Science & Business Media
Total Pages: 132
Release: 2006-02-08
Genre: Technology & Engineering
ISBN: 0387238026
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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.

Continuous-Time Digital Front-Ends for Multistandard Wireless Transmission

Continuous-Time Digital Front-Ends for Multistandard Wireless Transmission
Author: Pieter A. J. Nuyts
Publisher: Springer Science & Business Media
Total Pages: 329
Release: 2014-01-03
Genre: Technology & Engineering
ISBN: 3319039253
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This book describes the design of fully digital multistandard transmitter front-ends which can directly drive one or more switching power amplifiers, thus eliminating all other analog components. After reviewing different architectures, the authors focus on polar architectures using pulse width modulation (PWM), which are entirely based on unclocked delay lines and other continuous-time digital hardware. As a result, readers are enabled to shift accuracy concerns from the voltage domain to the time domain, to coincide with submicron CMOS technology scaling. The authors present different architectural options and compare them, based on their effect on the signal and spectrum quality. Next, a high-level theoretical analysis of two different PWM-based architectures – baseband PWM and RF PWM – is made. On the circuit level, traditional digital components and design techniques are revisited from the point of view of continuous-time digital circuits. Important design criteria are identified and different solutions are presented, along with their advantages and disadvantages. Finally, two chips designed in nanometer CMOS technologies are described, along with measurement results for validation.

Design of 2.4 GHZ CMOS Frontend for Bluetooth

Design of 2.4 GHZ CMOS Frontend for Bluetooth
Author: Florian Krug
Publisher: diplom.de
Total Pages: 79
Release: 2001-06-06
Genre: Technology & Engineering
ISBN: 3832441948
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Inhaltsangabe:Abstract: The Bluetooth wireless technology is the worlds new short-range RF transmission standard for small form factor, low-cost, short-range radio links between portable or desktop devices. The technology promises to eliminate the confusion of cables, connectors and protocols confounding communications between today high tech products. In the first step a 2.45 GHz Low Noise Amplifier (LNA), intended for use in a Bluetooth receiver, has been designed in a standard 0.18 um CMOS process. The amplifier provides a simulated switchable forward voltage gain of +16 / -7.7 dB with a simulated noise Figure (NF) of only 3 dB while drawing 2.8 mA from a 1.8 V supply. The die area of the LNA (pads included) is 0.79 mm2. In the second step a 2.45 GHz Power Amplifier (PA), also intended for the Bluetooth standard, has been designed in the same 0.18 um CMOS process as for the LNA. The class-A PA achieves a simulated forward gain (S21) of 23 dB and a simulated output 1 dB compression point (P1dB ) of 5.5 dBm, with a power-added efficiency (PAE) of 23 % while drawing 15.8 mA from a 1.8 V supply. The die area of the PA (pads included) is 2.1 mm2. Inhaltsverzeichnis:Table of Contents: 1.Introduction1 1.1Motivation1 1.2Organization2 2.The Bluetooth standard3 2.1Bluetooth as branding-name3 2.2Bluetooth RF requirements4 2.3System design4 2.3.1Receiver architectures4 2.3.2Transmitter architectures6 3.RF CMOS technology9 3.1The foundry9 3.1.1Technology overview9 3.1.2Process Characteristic9 3.2Design Flow10 3.2.1Cadence10 3.2.2SpectreRF10 4.Integrated spiral inductors11 4.1View and physical dimension of spiral11 4.2Model for on-chip spiral inductors12 5.Low Noise Amplifier13 5.1Architecture choices13 5.1.1Recent studies13 5.1.2LNA Architectures13 5.1.3Architecture properties14 5.1.4Architecture choice14 5.2A little piece of theory15 5.2.1Standard MOS noise model15 5.2.2Noise Figure16 5.2.3Input impedance16 5.2.4Voltage Gain18 5.2.5Stability19 5.2.6Noise Figure20 5.3Design approach for the LNA21 5.3.1Circuit topology21 5.3.2RF circuit design strategy21 5.3.3DC operating point design strategy23 5.3.4Input matching24 5.3.5Voltage gain25 5.3.6Noise Figure26 5.3.7Stability27 5.3.8LNA core schematics with component values28 5.4Design approach for the attenuation path of the LNA29 5.4.1Circuit Topology29 5.4.2Switching network29 5.4.3Input matching31 5.4.4Attenuation32 5.4.5Switchable LNA schematics with [...]

Silicon-Based RF Front-Ends for Ultra Wideband Radios

Silicon-Based RF Front-Ends for Ultra Wideband Radios
Author: Aminghasem Safarian
Publisher: Springer Science & Business Media
Total Pages: 97
Release: 2007-12-28
Genre: Technology & Engineering
ISBN: 1402067224
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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.

Essentials of RF Front-end Design and Testing

Essentials of RF Front-end Design and Testing
Author: Ibrahim A. Haroun
Publisher: John Wiley & Sons
Total Pages: 292
Release: 2023-12-19
Genre: Technology & Engineering
ISBN: 1394210612
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Essentials of RF Front-end Design and Testing Highly comprehensive text delivering the RF system essentials required to understand, develop, and evaluate the performance of RF wireless systems Essentials of RF Front-end Design and Testing: A Practical Guide for Wireless Systems is a system-oriented book which provides several wireless communication disciplines in one volume. The book covers a wide range of topics, including antenna fundamentals, phased array antenna and MIMOs that are crucial for the latest 5G mmWave and future 6G wireless systems, high-frequency transmission lines, RF building blocks that are necessary to understand how various RF subsystems are interrelated and implemented in wireless systems, and test setups for conducted and Over-The-Air (OTA) transmitter and receiver tests. The text enables readers to understand, develop, and evaluate the performance of RF wireless systems. The text focuses on RF system performance and testing rather than mathematical proofs, which are available in the provided references. Although the book is intended for testing and building RF system prototypes, it has the sufficient theoretical background needed for RF systems design and testing. Each chapter includes learning objectives, review questions, and references. Sample topics covered in the book include: An overview of cellular phone systems, 5G NR wireless technology, MIMO technology, terahertz communications for 6G wireless technology, and modulation and multiplexing Analog and digital modulation techniques, including AM, SSB, FM, FSK, PSK, QAM, SSFH, DSSS, and OFDM High-frequency transmission lines, S-parameters, low-noise amplifier, RF mixers, filters, power amplifiers, frequency synthesizers, circulators/isolators, directional couplers, RF switches, and RF phase shifters Antenna basics, including antenna gain, radiation pattern, input impedance, polarization, and antenna noise temperature; microstrip antenna, antenna array, propagation path loss, compact antenna test range (CATR), and test setups for antenna measurements. Basics of MIMO and beamforming technology, including analog, digital, and hybrid beamforming Test setups for characterizing the key RF performance parameters of 5G New Radio base station transmitters and receivers. Essentials of RF Front-end Design and Testing: A Practical Guide for Wireless Systems is a highly comprehensive resource on the subject and is intended for graduate engineers and technologists involved in designing, developing, and testing wireless systems, along with undergraduate/graduate students, enhancing their learning experience of RF subsystems/systems characterization.

Adaptive Multi-Standard RF Front-Ends

Adaptive Multi-Standard RF Front-Ends
Author: Vojkan Vidojkovic
Publisher: Springer
Total Pages: 192
Release: 2009-09-03
Genre: Technology & Engineering
ISBN: 9789048115327
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This book investigates solutions, benefits, limitations, and costs associated with multi-standard operation of RF front-ends and their ability to adapt to variable radio environments. Next, it highlights the optimization of RF front-ends to allow maximum performance within a certain power budget, while targeting full integration. Finally, the book investigates possibilities for low-voltage, low-power circuit topologies in CMOS technology.