Last edited by Mezinos
Tuesday, April 28, 2020 | History

1 edition of Direct Digital Synthesizers found in the catalog.

Direct Digital Synthesizers

Theory, Design and Applications

by Jouko Vankka

  • 303 Want to read
  • 4 Currently reading

Published by Springer US in Boston, MA .
Written in English

    Subjects:
  • Systems engineering,
  • Engineering,
  • Computer-aided design,
  • Computer engineering

  • About the Edition

    A major advantage of a direct digital synthesizer (DDS) is that its output frequency, phase and amplitude can be precisely and rapidly manipulated under digital processor control. Other inherent DDS attributes include the ability to tune with extremely fine frequency and phase resolution, and to rapidly `hop" between frequencies. These combined characteristics have made the technology popular in military radar and communications systems. In fact, DDS technology was previously applied almost exclusively to high-end and military applications: it was costly, power-hungry, difficult to implement, and required a discrete high speed D/A converter. Due to improved integrated circuit (IC) technologies, they now present a viable alternative to analog-based phase-locked loop (PLL) technology for generating agile analog output frequency in consumer synthesizer applications. It is easy to include different modulation capabilities in the DDS by using digital signal processing (DSP) methods, because the signal is in digital form. By programming the DDS, adaptive channel bandwidths, modulation formats, frequency hopping and data rates are easily achieved. The flexibility of the DDS makes it ideal for signal generator for software radio. The digital circuits used to implement signal-processing functions do not suffer the effects of thermal drift, aging and component variations associated with their analog counterparts. The implementation of digital functional blocks makes it possible to achieve a high degree of system integration. Recent advances in IC fabrication technology, particularly CMOS, coupled with advanced DSP algorithms and architectures are providing possible single-chip DDS solutions to complex communication and signal processing subsystems as modulators, demodulators, local oscillators, programmable clock generators, and chirp generators. The DDS addresses a variety of applications, including cable modems, measurement equipments, arbitrary waveform generators, cellular base stations and wireless local loop base stations. Direct Digital Synthesizers was written to find possible applications for radio communication systems. It will have appeal for wireless and wireline communication engineers, teachers and students.

    Edition Notes

    Statementby Jouko Vankka, Kari Halonen
    SeriesThe Springer International Series in Engineering and Computer Science, Analog Circuits and Signal Processing -- 614, Springer International Series in Engineering and Computer Science, Analog Circuits and Signal Processing -- 614.
    ContributionsHalonen, Kari
    Classifications
    LC ClassificationsTK7888.4
    The Physical Object
    Format[electronic resource] :
    Pagination1 online resource (xxi, 193 pages).
    Number of Pages193
    ID Numbers
    Open LibraryOL27032576M
    ISBN 101441948953, 147573395X
    ISBN 109781441948953, 9781475733952
    OCLC/WorldCa851800632


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Direct Digital Synthesizers by Jouko Vankka Download PDF EPUB FB2

Direct Digital Synthesizers: Theory, Design and Applications (The Springer International Series in Engineering and Computer Science) Skip to main content Try PrimeCited by: Direct Digital Synthesizers: Theory, Design and Applications (The Springer International Series in Engineering and Computer Science Book ) - Kindle edition by Vankka, Jouko, Halonen, Kari A.I.

Download it once and read it on your Kindle device, PC, phones or cturer: Springer. Direct Digital Frequency Synthesizers (DDS or DDFS) are used in communications as transmitter exciters, phase modulators, and local oscillators in receivers.

The advantages are small size, superior frequency stability (the same as that of the driving clock oscillator), and short switching : Paperback.

About this book. A major advantage of a direct digital synthesizer (DDS) is that its output frequency, phase and amplitude can be precisely and rapidly manipulated under digital processor control. Other inherent DDS attributes include the ability to tune with extremely fine frequency and phase resolution, and to rapidly `hop' between frequencies.

Direct Digital Synthesizers was written to find possible applications for radio communication systems. It will have appeal for wireless and wireline communication engineers, teachers and students. It will have appeal for wireless and wireline communication engineers, teachers and students.

Direct Digital Frequency Synthesizers Book Abstract: With the advent of integrated circuits (IC), digital systems have become widely used in modern electronic devices, including communications and measurement equipment.

A major advantage of a direct digital synthesizer is that its output frequency, phase and amplitude can be precisely and rapidly manipulated under digital processor control.

This book was written to find possible applications for radio communication systems. I bought this book recently with the intention of further augmenting my synthesis techniques.

What I got was a pleasant enough read, but keep in mind, the title of this book is "A Comprehensive Guide to Understanding, Programming, Playing, and Recording the Ultimate Electronic Music Instrument"/5(49). Figure Simple Direct Digital Synthesizer In this case, the digital amplitude information that corresponds to a complete cycle of a sinewave is stored in the PROM.

The PROM is therefore functioning as a sine lookup table. The address counter steps through and accesses each of the PROM’s memory locations and the contents (theFile Size: KB.

Direct Digital Synthesizers: Theory, Direct Digital Synthesizers book and Applica-tions Jouko Vankka November Dissertation for the degree of Doctor of Science in Technology to be presented with due per-mission of the Department of Electrical and Communications Engineering for public examina.

whereas, the higher order harmonics of the output of PLL-based synthesizers can be filtered. There are other considerations which will be discussed shortly. fc ADDRESS COUNTER SIN LOOKUP TABLE.

N-BITS CLOCK REGISTER LPF DAC fout LOOKUP TABLE CONTAINS SINE DATA FOR INTEGRAL NUMBER OF CYCLES N-BITS. Figure 1: Fundamental Direct Digital Synthesis File Size: KB. A digital synthesizer is a synthesizer that uses digital signal processing (DSP) techniques to make musical sounds.

This in contrast to older analog synthesizers, which produce music using analog electronics, and samplers, which play back digital recordings of acoustic, electric, or electronic digital synthesizers emulate analog synthesizers; others include sampling.

Direct Digital Frequency Synthesizers (DDS) are used in communications as transmitter exciters and local oscillators in receivers. The advantages are superior frequency stability, the same as that of the driving clock oscillator, and short switching times.

The difficulties are lower output frequencies and rather large spurious signals. Direct digital synthesis (DDS) is a method of producing an analog waveform—usually a sine wave—by generating a time-varying signal in digital form and then performing a digital-to-analog conversion.

Rohde explains loop fundamentals, demonstrates the linear approach to oscillator phase noise, discusses the digital direct synthesizer technique, addresses low noise oscillator design, and provides insight into the role and design of crystal oscillators, mixers, phase/frequency discriminators, wideband high-gain amplifiers, programmable dividers, and loop by: Direct Digital Synthesizers was written to find possible applications for radio communication systems.

It will have appeal for wireless and wireline communication engineers, teachers and students. The LMX supports direct digital FSK modulation through programming or pins.

Discrete level FSK, pulse shaping FSK, and analog FM modulation are supported. A new FastLock technique can be used allowing the user to step from one frequency to the next in less than ms even when an external VCO is used with a narrow band loop Size: 2MB. Direct digital synthesis, DDS, is a frequency synthesizer technique that is becoming more widespread.

DDS, direct digital synthesis takes a different approach to that of the more usual indirect frequency synthesis techniques using PLLs by directly synthesising the waveform from a digital map of the waveform stored in a memory.

ADI direct digital synthesis products provide fast acquisition, highly accurate PSK and FSK modulation or high precision tuning resolution, among other benefits. They are an ideal synthesizer solution in applications where precise or agile frequency and phase control is required, such as systems for communications, test equipment, and radar.

Direct digital frequency synthesizers. Summary: "With the advent of integrated circuits (IC), digital systems have become widely used in modern electronic devices, including communications and measurement equipment.

Direct Digital Frequency Synthesizers (DDS) are used in communications as transmitter exciters and local oscillators in receivers. Analog Devices Direct Digital Synthesizer View The Bottom Line for Direct Digital Synthesis Overall, a DDS can offer much higher performance over a wider range of frequencies with finer granularity, but it is often a more expensive solution that requires a more advanced understanding of synthesis to effectively integrate into a design.

"With the advent of integrated circuits (IC), digital systems have become widely used in modern electronic devices, including communications and measurement equipment.

Direct Digital Frequency Synthesizers (DDS) are used in communications as transmitter exciters and local oscillators in receivers. The advantages are superior frequency stability, the same as that of the driving clock oscillator. In this chapter the operation of the direct digital synthesizer is first described.

It is simple to add modulation capabilities to the DDS, because the DDS is a digital signal processing device. It is shown that the DDS produces spurs as well as the desired output by: 1. Lusk Boulevard, San Diego, CAUSA E-mail: [email protected] Synthesizer Products Data Book, A, 8/97 Telephone: () Data Subject to Change Without Notice Fax: () DIRECT DIGITAL SYNTHESIZERS OVERVIEW DIRECT DIGITAL SYNTHESIZERS IN PRACTICE Direct Digital Synthesis (DDS) can be practicallyFile Size: 1MB.

is an authorized distributor of Direct Digital Synthesizers from industry-leading manufacturers. Find datasheets, pricing, and inventory for the available products below.

Sort by Part #, Price, Stock, Manufacturer and many more. Analog Devices’ world leading direct digital synthesis ICs incorporate features such as on-board comparators, RAM, PLLs, mixers, and registers.

This makes them an ideal agile frequency synthesizer solution in systems for communications, test equipment, and radar. Direct Digital Synthesis (DDS) takes a digital value and turns it into an analog signal using some type of processing.

At face value it may sound hard, but. Direct digital synthesis is not the only way to generate an arbitrary waveform. Phase Locked Loop (PLL) based frequency synthesizers are fine when the latency and size of analog components are not a concern and low frequency synthesis can be achieved using just a digital to analog converter (DAC) and some clever programming.

Usually a synthesizer has more than one oscillator. The pitch, or frequency the oscillator produces is as described in sectiondetermined by the control voltage from the keyboard.

Modern analog synthesizers can also be controlled by midi. Because of midi being a digital interface, a D/A conversion is needed to convert the digital. A frequency synthesizer is the means by which many discrete frequencies are generated from one or more fixed reference frequencies.

Frequency Synthesizer f 1 f 2 f 3 f N f o Control f o Fig • Coherent Direct Digital Synthesis – Digital accumulators, ROMs, and digital-analogFile Size: KB. Digital Precompensation Method without Training Signal 57 REFERENCES 58 4.

DIRECT DIGITAL SYNTHESIZERS 61 Conventional Direct Digital Synthesizer 61 Pulse Output DDS '. 63 DDS Architecture for Modulation Capability 65 QAM Modulator This page book contains data sheets for all of Qualcomm's ASIC synthesizer products plus three very good application notes on DDS theory and technology -- it's a "must have / must read" reference.

Single-Chip Direct Digital Synthesis vs. the Analog PLL. Note: If you're looking for a free download links of Direct Digital Synthesizers: Theory, Design and Applications (The Springer International Series in Engineering and Computer Science) Pdf, epub, docx and torrent then this site is not for you.

only do ebook promotions online and we does not distribute any free download of ebook on this site. Direct Digital Synthesizers: Theory, Design and Applications (The Springer International Series in Engineering and Computer Science) Pdf, Download. Synthesizers are wonderful musical instruments that cover a very wide range of implementations and uses.

Mark Vails The Synthesizer is a must-read for anyone who has interest in learning about these engineering marvels. It is a great introduction if you are new to synths, but also very informative and up-to-date for the seasoned synth player/5(43). Direct Digital Synthesizer Indirect Digital Synthesizer Cordic Algorithm Sources of Noise and Spurs in DDS Blocks of Direct Digital Synthesizer Spur Reduction Techniques in Sine Output Direct Digital Synthesizer Up-Conversion Direct Digital Synthesizer with an On-Chip D/A-Converter Direct Digital Synthesis (DDS) • Micro-Hertz frequency, sub-degree phase resolution • Extremely fast hopping – no settling time constraints • Phase-continuous frequency hops • Digital control • Precise quadrature phase generation for I - Q Ref: Analog Devices DDS Tutorial, As a result, this type of RF synthesizer was only used as a last resort before the widespread availability of RF ICs and the possibility of utilising other forms of frequency synthesis.

Direct Digital Frequency Synthesis: Direct digital synthesizers, DDS are widely used now. They create the signal by having a stored version of the waveform. When Teenage Engineering’s flagship OP-1 synth was released back ina lot of reviewers weren’t quite sure what to make of it.

As a premium-priced, pocket-sized synth which looked something like a Casio VL-1 reimagined for the 21st century by Jonathan Ive, the OP-1 was always going to be a niche product, but what a lot of its critics failed to notice is that underneath the cutely.

Traditional designs of high bandwidth frequency synthesizers employ the use of a phase-locked-loop (PLL). A direct digital synthesizer (DDS) provides many significant advantages over the PLL.

A Direct Digital Synthesizer with Arbitrary Modulus Neil Robertson June 3, 5 comments Tweet Suppose you have a system with a 10 MHz sample clock, and you want to generate a sampled sinewave at any frequency below 5 MHz on kHz spacing; i.e.InYamaha released the first commercially successful digital synthesizer, the Yamaha DX7.

Based on frequency modulation synthesis developed by Stanford University engineer John Chowning, the DX7 remains one of the bestselling synthesizers in history and was the first synthesizer to sell overunits.: 57 It was widely used in s pop music.

Product Index > Integrated Circuits (ICs) > Interface - Direct Digital Synthesis (DDS) Filter Options: Stacked Scrolling. Analog Devices Inc. Renesas Electronics America Inc Rochester Electronics, LLC.

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