Download or read book High Frequency Low Power Local Oscillator Generation written by Yannan Miao and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: With rapid development in the area of RF and wireless communication, the interest in frequency synthesizers has grown rapidly in the last few years. Frequency synthesizer is used for local oscillator (LO) generation. In this thesis, our aim is to explore high-frequency low-power LO generation in CMOS technology. We focus on three most power-hungry blocks in a frequency synthesizer, which dominate the total power consumption due to their high-frequency operation, namely voltage-controlled oscillator (VCO), frequency divider and frequency multiplier, as these circuits are the bottleneck to achieve the above mentioned aim. Through reducing their power consumption, the total power consumption of the frequency synthesizer can be reduced significantly. Moreover, the phase noise of the frequency synthesizer is significantly dependent on the VCO and the frequency multiplier. These novel ideas are implemented in a 24-GHz frequency synthesizer. These designs should help those IC designers, who may be considering improving the performance of transceiver.

Download or read book Local Oscillator Generation Using High Conversion Gain Frequency Tripler and Low Phase Noise Voltage Controlled Oscillator written by and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra Low Power Short Range Radios written by Patrick P. Mercier and published by Springer. This book was released on 2015-07-21 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the design of ultra-low-power radio-frequency integrated circuits (RFICs), with communication distances ranging from a few centimeters to a few meters. The authors describe leading-edge techniques to achieve ultra-low-power communication over short-range links. Many different applications are covered, ranging from body-area networks to transcutaneous implant communications and smart-appliance sensor networks. Various design techniques are explained to facilitate each of these applications.

Download or read book Frequency Synthesizers and Oscillator Architectures Based on Multi order Harmonic Generation written by Mohammed Abdul-Latif and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Frequency synthesizers are essential components for modern wireless and wireline communication systems as they provide the local oscillator signal required to transmit and receive data at very high rates. They are also vital for computing devices and microcontrollers as they generate the clocks required to run all the digital circuitry responsible for the high speed computations. Data rates and clocking speeds are continuously increasing to accommodate for the ever growing demand on data and computational power. This places stringent requirements on the performance metrics of frequency synthesizers. They are required to run at higher speeds, cover a wide range of frequencies, provide a low jitter/phase noise output and consume minimum power and area. In this work, we present new techniques and architectures for implementing high speed frequency synthesizers which fulfill the aforementioned requirements. We propose a new architecture and design approach for the realization of wideband millimeter-wave frequency synthesizers. This architecture uses two-step multi-order harmonic generation of a low frequency phase-locked signal to generate wideband mm-wave frequencies. A prototype of the proposed system is designed and fabricated in 90nm Complementary Metal Oxide Semiconductor (CMOS) technology. Measurement results demonstrated that a very wide tuning range of 5 to 32 GHz can be achieved, which is costly to implement using conventional techniques. Moreover the power consumption per octave resembles that of state-of-the art reports. Next, we propose the N-Push cyclic coupled ring oscillator (CCRO) architecture to implement two high performance oscillators: (1) a wideband N-Push/M-Push CCRO operating from 3.16-12.8GHz implemented by two harmonic generation operations using the availability of different phases from the CCRO, and (2) a 13-25GHz millimeter-wave N-Push CCRO with a low phase noise performance of -118dBc/Hz at 10MHz. The proposed oscillators achieve low phase noise with higher FOM than state of the art work. Finally, we present some improvement techniques applied to the performance of phase locked loops (PLLs). We present an adaptive low pass filtering technique which can reduce the reference spur of integer-N charge-pump based PLLs by around 20dB while maintaining the settling time of the original PLL. Another PLL is presented, which features very low power consumption targeting the Medical Implantable Communication Standard. It operates at 402-405 MHz while consuming 600microW from a 1V supply.

Download or read book High Frequency Generation and Amplification written by and published by . This book was released on 1971 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1971 Conference was concerned with both the properties and applications of solid state and quantum electronic devices. The meeting was particularly concerned with a preliminary assessment of the future social implications of solid state device technology. Other applicational papers had to do with monitoring of pollutants in the atmosphere, solid state microwave devices in airborne radars, Gunn devices applied to miniaturized aircraft altimeters, Josephson junctions, laser applications to frequency standards, chemical lasers, noise problems in variety of high-frequency electronic generators and amplifiers including IMPATT and TRAPATT avalanche diodes, Gunn oscillators, LSA mode oscillators, transistors, chemical lasers, junction lasers, and the barrier injection transit time low-noise devices made with silicon.

Download or read book CMOS PLLs and VCOs for 4G Wireless written by Adem Aktas and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: CMOS PLLs and VCOs for 4G Wireless is the first book devoted to the subject of CMOS PLL and VCO design for future broadband 4th generation wireless devices. These devices will be handheld-centric, requiring very low power consumption and small footprint. They will be able to work across multiple bands and multiple standards covering WWAN (GSM,WCDMA) ,WLAN(802.11 a/b/g) and WPAN(Bluetooth) with different modulations, channel bandwidths , phase noise requirements ,etc. As such, this book discusses design, modeling and optimization techniques for low power fully integrated broadband PLLs and VCOs in deep submicron CMOS. First, the PLL and VCO performances are studied in the context of the chosen multi-band multi-standard, radio architecture and the adopted frequency plan. Next a thorough study of the design requirements for broadband PLL/VCO design is conducted together with modeling techniques for noise sources in a PLL and VCO focusing on optimization of integrated phase noise for multi-carrier OFDM 64-QAM type applications. Design examples for multi-standard 802.111a/b/g as well as for GSM/WCDMA are fully described and experimental results from 0.18 micron CMOS test chips have demonstrated the validity of the proposed design and optimization techniques. Equally important the work describes techniques for robust high volume production of RF radios in general and for integrated PLL/VCO design in particular including issues such as supply sensitivity, ground bounce and calibration mechanisms. CMOS PLLS and VCOs for 4G Wireless will be of interest to graduate students in electrical and computer engineering, design managers and RFIC designers in wireless semiconductor companies.

Download or read book CMOS Circuits for Passive Wireless Microsystems written by Fei Yuan and published by Springer Science & Business Media. This book was released on 2010-10-28 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive treatment of CMOS circuits for passive wireless microsystems. Major topics include: an overview of passive wireless microsystems, design challenges of passive wireless microsystems, fundamental issues of ultra-low power wireless communications, radio-frequency power harvesting, ultra-low power modulators and demodulators, ultra-low power temperature-compensated current and voltage references, clock generation and remote calibration, and advanced design techniques for ultra low-power analog signal processing.

Download or read book Wireless Technologies written by Krzysztof Iniewski and published by CRC Press. This book was released on 2017-12-19 with total page 696 pages. 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.

Download or read book Low power HF Microelectronics written by Gerson A. S. Machado and published by IET. This book was released on 1996 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together innovative modelling, simulation and design techniques in CMOS, SOI, GaAs and BJT to achieve successful high-yield manufacture for low-power, high-speed and reliable-by-design analogue and mixed-mode integrated systems.

Download or read book Low noise Local Oscillator Design Techniques Using a DLL based Frequency Multiplier for Wireless Applications written by George Chien and published by . This book was released on 2000 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Frequency Generation for Millimeter wave and Sub TeraHertz Bands written by Shanthi S. Bhagavatheeswaran and published by . This book was released on 2013 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Local Oscillator (LO) signal is used for frequency translation and channel selection in a transceiver. The frequency of the LO is maintained constant by a Phase-Locked Loop (PLL). This dissertation demonstrates a technique for the on-chip integration of millimeter-wave (mm-Wave) PLL in Complementary Metal-Oxide Semiconductor (CMOS) using sub-harmonic injection locking, wherein a low-frequency PLL drives an injection locked oscillator (ILO) operating at a higher harmonic. This simplifies the divider design in the PLL and achieves lower power consumption. Traditionally, sub-TeraHertz (THz) electronics have been designed using III-V semiconductors. With scaling of CMOS technology and consequent increase in their peak-ft and peak-fMAX , coupled with the ease of integration with mixed-signal/digital circuits, there have been recent developments in the mm-Wave and THz circuits in CMOS. Challenges with deep sub-micron CMOS implementation include implementation of passives, operating with lower power supplies, achieving higher output powers for the signal, and achieving good phase noise performance. A 100 GHz ILO is implemented in a commercial 65 nm CMOS process. The design can be adapted to generate other THz frequencies. Measured results of the 100 GHz ILO is shown. The measured self-oscillation frequency of the ILO is 103.81 GHz. This can be tuned using a varactor and/or by changing the tail bias. The measured output frequency range of the ILO is 99.9-103.81 GHz. Phase noise estimated from locked spectrum is -70 dBc/Hz at 10 MHz offset. The power consumption is 12 mW, and area is 0.08 mm 2 . The ILO driven with a sub-harmonic injection locked PLL, in a low power mm-Wave and THz phased-array systems, eliminates the high frequency divider in the PLL and lends itself to easy frequency scaling. PLL parameters for a 100 GHz imaging system using the sub-harmonic injection locked PLL is derived. This topology can lead to significant power reduction in an n x n multi-receiver system: reducing the power by 20 % per receiver, the number of high-frequency PLLs by n2 - 1, and obviates the rail-to-rail routing of multi-GHz local oscillator (LO) signal across the chip. Patterned ground shield inductor fabricated in digital 45 nm CMOS, yielding quality factor improvement at mm-Wave/sub-THz frequencies, is also shown.

Download or read book Low Noise Low Power Design for Phase Locked Loops written by Feng Zhao and published by Springer. This book was released on 2014-11-25 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces low-noise and low-power design techniques for phase-locked loops and their building blocks. It summarizes the noise reduction techniques for fractional-N PLL design and introduces a novel capacitive-quadrature coupling technique for multi-phase signal generation. The capacitive-coupling technique has been validated through silicon implementation and can provide low phase-noise and accurate I-Q phase matching, with low power consumption from a super low supply voltage. Readers will be enabled to pick one of the most suitable QVCO circuit structures for their own designs, without additional effort to look for the optimal circuit structure and device parameters.

Download or read book Wireless CMOS Frequency Synthesizer Design written by J. Craninckx and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent boom in the mobile telecommunication market has trapped the interest of almost all electronic and communication companies worldwide. New applications arise every day, more and more countries are covered by digital cellular systems and the competition between the several providers has caused prices to drop rapidly. The creation of this essentially new market would not have been possible without the ap pearance of smalI, low-power, high-performant and certainly low-cost mobile termi nals. The evolution in microelectronics has played a dominant role in this by creating digital signal processing (DSP) chips with more and more computing power and com bining the discrete components of the RF front-end on a few ICs. This work is situated in this last area, i. e. the study of the full integration of the RF transceiver on a single die. Furthermore, in order to be compatible with the digital processing technology, a standard CMOS process without tuning, trimming or post-processing steps must be used. This should flatten the road towards the ultimate goal: the single chip mobile phone. The local oscillator (LO) frequency synthesizer poses some major problems for integration and is the subject of this work. The first, and also the largest, part of this text discusses the design of the Voltage Controlled Oscillator (VCO). The general phase noise theory of LC-oscillators is pre sented, and the concept of effective resistance and capacitance is introduced to char acterize and compare the performance of different LC-tanks.

Download or read book RF Photonic Technology in Optical Fiber Links written by William S. C. Chang and published by Cambridge University Press. This book was released on 2007-05-14 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many applications, radio frequency (RF) signals need to be transmitted and processed without being digitalized. Optical fiber provides a transmission medium in which RF modulated optical carriers can be transmitted and distributed with very low loss, making it more efficient and less costly than conventional electronic systems. This volume presents a review of RF photonic components, transmission systems, and signal processing examples in optical fibers from leading academic, government, and industry scientists working in this field. It also introduces the reader to various related technologies such as direct modulation of laser sources, external modulation techniques, and detectors. The text is aimed at engineers and scientists engaged in the research and development of optical fibers and analog RF applications. With an emphasis on design, performance and practical application, this book will be of particular interest to those developing systems based on this technology.

Download or read book High Frequency and Microwave Engineering written by Ed Da Silva and published by Newnes. This book was released on 2001 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: CD-ROM contains: PUFF 2.1 for construction and evaluation of circuits.

Download or read book Cmos Millimeter wave Integrated Circuits For Next Generation Wireless Communication Systems written by Yeo Kiat Seng and published by World Scientific. This book was released on 2019-07-09 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses in-depth technical issues, limitations, considerations and challenges facing millimeter-wave (MMW) integrated circuit and system designers in designing MMW wireless communication systems from the complementary metal-oxide semiconductor (CMOS) perspective. It offers both a comprehensive explanation of fundamental theories and a broad coverage of MMW integrated circuits and systems.CMOS Millimeter-Wave Integrated Circuits for Next Generation Wireless Communication Systems is an excellent reference for faculty, researchers and students working in electrical and electronic engineering, wireless communication, integrated circuit design and circuits and systems. While primarily written for upper-level undergraduate courses, it is also an excellent introduction to the subject for instructors, graduate students, researchers, integrated circuit designers and practicing engineers. Advanced readers could also benefit from this book as it includes many recent state-of-the-art MMW circuits.

Download or read book A 3 8 6 4GHz Local Oscillator System Using an Injection Locked Frequency Doubling and Phase Tuning Technique written by James P. Maligeorgos and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies the design of a novel local oscillator system based on low-voltage and low-power regenerative (injection locking) techniques. The LO system converts an input signal of frequeney 'fLO'/2 into a quadrature pair of LO signals at a frequency of 'fLO', intended to drive a pair of I and Q down-converting mixers. A new IC compatible technique for regenerative frequency doubling is presented. Regenerative frequency doublers are cascaded on-chip to provide a net multiply-by-4 function, generating frequencies in excess of fT2 without the need for interstage filtering. A new technique is also presented for frequency-independent phase control of the quadrature LO signals of a regenerative divider (I-Q generator), achieving a precision on the order of 0.01°. Results are presented in the context of a fabricated 5-6GHz image reject receiver.