| 書(shū)目名稱(chēng) | Direct Digital Synthesizers | | 副標(biāo)題 | Theory, Design and A | | 編輯 | Jouko Vankka,Kari Halonen | | 視頻video | http://file.papertrans.cn/281/280602/280602.mp4 | | 叢書(shū)名稱(chēng) | The Springer International Series in Engineering and Computer Science | | 圖書(shū)封面 |  | | 描述 | A major advantage of a direct digital synthesizer (DDS) is thatits output frequency, phase and amplitude can be precisely and rapidlymanipulated under digital processor control. Other inherent DDSattributes include the ability to tune with extremely fine frequencyand phase resolution, and to rapidly `hop‘ between frequencies. Thesecombined characteristics have made the technology popular in militaryradar and communications systems. In fact, DDS technology waspreviously applied almost exclusively to high-end and militaryapplications: it was costly, power-hungry, difficult to implement, andrequired a discrete high speed D/A converter. Due to improvedintegrated circuit (IC) technologies, they now present a viablealternative to analog-based phase-locked loop (PLL) technology forgenerating agile analog output frequency in consumer synthesizerapplications..It is easy to include different modulation capabilities in the DDS byusing digital signal processing (DSP) methods, because the signal isin digital form. By programming the DDS, adaptive channel bandwidths,modulation formats, frequency hopping and data rates are easilyachieved. The flexibility of the DDS makes it ideal for signalgenera | | 出版日期 | Book 2001 | | 關(guān)鍵詞 | CMOS; Modulation; Phase; Signal; algorithm; algorithms; analog; circuit; communication; communication systems | | 版次 | 1 | | doi | https://doi.org/10.1007/978-1-4757-3395-2 | | isbn_softcover | 978-1-4419-4895-3 | | isbn_ebook | 978-1-4757-3395-2Series ISSN 0893-3405 | | issn_series | 0893-3405 | | copyright | Springer Science+Business Media Dordrecht 2001 |
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