Download or read book A Low voltage Low power CMOS 900MHZ Frequency Synthesizer written by Byeong-Ha Park and published by . This book was released on 1997 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Voltage CMOS RF Frequency Synthesizers written by Howard Cam Luong and published by Cambridge University Press. This book was released on 2004-08-26 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A frequency synthesizer is one of the most critical building blocks in any wireless transceiver system. Its design is getting more and more challenging as the demand for low-voltage low-power high-frequency wireless systems continuously grows. As the supply voltage is decreased, many existing design techniques are no longer applicable. This book provides the reader with architectures and design techniques to enable CMOS frequency synthesizers to operate at low supply voltage at high frequency with good phase noise and low power consumption. In addition to updating the reader on many of these techniques in depth, this book will also introduce useful guidelines and step-by-step procedure on behaviour simulations of frequency synthesizers. Finally, three successfully demonstrated CMOS synthesizer prototypes with detailed design consideration and description will be elaborated to illustrate potential applications of the architectures and design techniques described. For engineers, managers and researchers working in radio-frequency integrated-circuit design for wireless applications.

Download or read book A Low power CMOS Fractional N Frequency Synthesizer written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Voltage CMOS Frequency Synthesizers for RF Applications written by Hyung-Seuk Kim and published by . This book was released on 2005 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Frequency synthesizers play an important role in modern communications and timing systems. The output of frequency synthesizers may be used as the local oscillator signal in superheterodyne transceivers, or in frequency modulation/demodulation. Fully integrated CMOS RF synthesizers are currently a major research topic. Several publications demonstrated improvements in a variety of aspects such as phase noise, power consumption, and tuning range. However, very low voltage frequency synthesizers are very challenging, since they usually have a limited tuning range and a relatively high phase noise. This research work demonstrates a new architecture to achieve a wide tuning range and low phase noise from a very low voltage supply. The synthesizer is fully integrated in a 0.18 mum CMOS technology covering the 5 GHz WLAN frequency range, requiring only a 1-V power supply. The second part of this thesis consists of the implementation of a 2.4-GHz fractional-N frequency synthesizer to be compatible with two MEMS resonators that resonate at 20-MHz and 70-MHz." --

Download or read book A Low power CMOS Fractional N Frequency Synthesizer written by Kasra Ardalan and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frequency synthesizers find wide applications in different communication systems. The demand for higher performance and speed from one side, and lower power consumption and cost from another side, makes the synthesizer's design a challenging task. In this thesis, a very low power integrated circuit fractional-N frequency synthesizer was designed which employs a $\Delta\Sigma$ modulator in its architecture to digitally control the output frequency and also to shape the noise of the dual modulus divider. The target application for this design is clock recovery in digital communication receivers in which the timing information is obtained in digital domain (such as baud-rate timing recovery method). This information has to be applied to a digitally-controlled frequency synthesizer which generates pulses to sample the incoming data for extracting the information. The center frequency of VCO is around 315 MHz which makes the system suitable for high speed applications (622Mb/s in case of 4-PAM modulation scheme). The chip is fabricated in a CMOS 0.35$\mu$ process and consumes only 8.5 mW power using a single 3.3 V power supply.

Download or read book RF Microwave Circuit Design for Wireless Applications written by Ulrich L. Rohde and published by John Wiley & Sons. This book was released on 2013-01-07 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides researchers and engineers with a complete set of modeling, design, and implementation tools for tackling the newest IC technologies Revised and completely updated, RF/Microwave Circuit Design for Wireless Applications, Second Edition is a unique, state-of-the-art guide to wireless integrated circuit design that provides researchers and engineers with a complete set of modeling, design, and implementation tools for tackling even the newest IC technologies. It emphasizes practical design solutions for high-performance devices and circuitry, incorporating ample examples of novel and clever circuits from high-profile companies. Complete with excellent appendices containing working models and CAD-based applications, this powerful one-stop resource: Covers the entire area of circuit design for wireless applications Discusses the complete system for which circuits are designed as well as the device technologies on which the devices and circuits are based Presents theory as well as practical issues Introduces wireless systems and modulation types Takes a systematic approach that differentiates between designing for battery-operated devices and base-station design RF/Microwave Circuit Design for Wireless Applications, Second Edition is an indispensable tool for circuit designers; engineers who design wireless communications systems; and researchers in semiconductor technologies, telecommunications, and wireless transmission systems.

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 Low Phase Noise Low Power CMOS Frequency Synthesizers for Miniature Atomic Clocks written by Yazhou Zhao and published by . This book was released on 2013 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Performance Assessment of Low power CMOS Phase Locked Loop Frequency Synthesizer written by Kumar Subramany and published by . This book was released on 2006 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated RF CMOS Frequency Synthesizers and Oscillators for Wireless Applications written by Adem Aktas and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: PLL (Phase-Locked Loop) frequency synthesizers are used in wireless transceivers for frequency conversion. Recent directions in PLL frequency synthesizer research and development are to fully integrate PLL synthesizers in CMOS technology, to improve phase noise performance, and to operate wide range of frequency bands and channel bandwidths. Fully integration of synthesizers in CMOS technology is desired for low cost, low power consumption and small size in mobile wireless terminals. Low phase noise is required by digital modulation techniques which have been used in new mobile standards for the efficient use of the frequency spectrum. Operation over a wide range of frequency bands and channel bandwidths are required to support migration and backward compatibility in the wireless standard evolution. This work investigates the PLL frequency synthesizer design and implementation in CMOS technology with focus on integration of wideband VCOs (Voltage-Controlled Oscillators). Phase noise of a PLL synthesizer is a major design parameter. A PLL noise model is developed for noise optimization purposes. Wideband RF VCO design with sub-bands is investigated. Frequency planning, synthesizer architecture and technology considerations are also explored for wideband VCO design. Band switching techniques VCO tuning range presented. Active VCO circuit topologies and resonator design are also presented. The PLL frequency synthesizers are designed and implemented for a multi-band/standard(IEEE 802.11a/b/g) WLAN radio in 0.18um CMOS. Phase noise trade-offs for PLL design are explored in this application. Development and design of a wideband VCO for this application is also presented. An auto calibration circuit is developed for VCO tuning band selection. Another application of the wideband PLL frequency synthesizer is designed and implemented for a fully integrated dual-mode frequency synthesizer for GSM and WCDMA standards in 0.5um CMOS. A hybrid integer-N/fractional-N architecture is developed to meet the multi-standard requirements. Design and implementation of high performance RF VCO depends on the RF models of the devices. RF CMOS characterization and modeling techniques are explored. Microwave wafer measurement and calibration techniques are also investigated for CMOS technology.

Download or read book Low Power VCO Design in CMOS written by Marc Tiebout and published by Springer Science & Business Media. This book was released on 2006-01-25 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers the design of CMOS fully integrated low power low phase noise voltage controlled oscillators for telecommunication or datacommuni- tion systems. The need for low power is obvious, as mobile wireless telecommunications are battery operated. As wireless telecommunication systems use oscillators in frequency synthesizers for frequency translation, the selectivity and signal to noise ratio of receivers and transmitters depend heavily on the low phase noise performance of the implemented oscillators. Datacommunication s- tems need low jitter, the time-domain equivalent of low phase noise, clocks for data detection and recovery. The power consumption is less critical. The need for multi-band and multi-mode systems pushes the high-integration of telecommunication systems. This is o?ered by sub-micron CMOS feat- ing digital ?exibility. The recent crisis in telecommunication clearly shows that mobile hand-sets became mass-market high-volume consumer products, where low-cost is of prime importance. This need for low-cost products - livens tremendously research towards CMOS alternatives for the bipolar or BiCMOS solutions in use today.

Download or read book A 900 MHz 1 8 GHz CMOS Frequency Synthesizer for Dual band Applications written by Eric R. Garlepp and published by . This book was released on 1999 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A 2 4Ghz Low Power Fully integrated CMOS Frequency Synthesizer for Wireless Communications written by Benyong Zhang and published by . This book was released on 2001 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CMOS Fractional N Synthesizers written by Bram De Muer and published by Springer Science & Business Media. This book was released on 2003-01-31 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the design of monolithic CMOS frequency synthesizers that can attain the highest spectral purity and fast switching with moderate power consumption, namely a DS-controlled fractional-N synthesizer. The authors (KU Leuven) first review the requirements of the frequency synthesizer in the DCS-1800 system, then develop high speed frequency dividers, high speed voltage controlled oscillators (VCOs), and a dual-path phase-locked loop (PLL) filter. The final chapter presents a monolithic 1.8 GHz DS fractional-N PLL frequency synthesizer, which may lead to an inexpensive cellular transceiver solution. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).

Download or read book Design of Low Power Low Phase Noise High Resolution RF CMOS Frequency Synthesizer written by Sadeka A. Ali and published by . This book was released on 2006 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of wireless personal area network (WPAN), there is a need for low-cost synthesizer whose phase noise requirement is less stringent than that required in more conventional standards such as GSM. This thesis describes a low power synthesizer using wideband, on-chip ring VCO for 'Zero-G' system, where low-cost is the major concern.

Download or read book Low Power and High speed Digital Frequency Synthesizer and Mixer in 0 18 mu m CMOS written by Shilpa Agarwal and published by . This book was released on 2009 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Low Power Prescaler Phase Frequency Detector and Charge Pump for a 12 GHz Frequency Synthesizer written by Evan Lee Eschenko and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A low power implementation of a CMOS frequency synthesizer at 12 GHz is an important step to improve the efficiency of a wireless transceiver in this frequency band. Since synthesizers are often employed as reference frequency sources such as local oscillators for up or down-conversion in communications system, their design is especially important for high performance transceiver applications. CMOS PLLs operating at high frequencies consume large amounts of power for proper operation, making power efficiency a top priority in transceiver implementation. In response, this thesis presents a low power phase and frequency detector with True Single Phase Clocking by employing the .18[mu] TSMC process with a 1.8 V supply voltage. A conventional but extremely power efficient nano-watt charge pump is also implemented for additional power savings. Furthermore, a state of the art 16/17 prescaler using Current Mode Logic (CML) D-Flip Flops, CMOS inverters, and transmission gates has been optimized for maximum power savings. The prescaler consists of a 4/5 synchronous core and a feedback loop which modulates the 4/5 core to produce a division ratio of 16/17. Instead of employing power hungry CML, the feedback circuit takes advantage of low power NOR and AND gates realized in Transmission Gate Logic (TGL) to reduce the power consumption. To the best of my knowledge, this technique has never been used in a high frequency prescaler before.