Recent progress in wideband monolithic direct digital synthesizers

Andrews, G. Van; Delaney, J.; Vernon, M.A.; Harris, Mike; Chang, C.T.M.; Eiland, T.C.; Hastings, Charles; DiPerna, V.L.; Brown, Michael; White, W.A.; Kushner, Lawrence J.

doi:10.1109/mwsym.1996.512185

Cited by 7 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Frequency synthesizers are characterized by frequency range or bandwidth, step size or frequency resolution, phase noise performance, switching speed, coherence of signals during switching, discrete spurious frequency outputs, as well as power dissipation and cost. Over the past decade, there has been an increasing use of digital techniques to address these issues [27]- [29].…”

Section: Digital Frequency Generationmentioning

confidence: 99%

Digital signal processing - up to microwave frequencies

Asbeck

Galton

Wang³

et al. 2002

IEEE Trans. Microwave Theory Techn.

Self Cite

View full text Add to dashboard Cite

Digital logic integrated circuits are advancing toward ever higher speeds of operation. Clock frequencies already exceed 1 GHz in some Si CMOS-based consumer products, and even higher speeds are attainable in specialized technologies, such as those based on GaAs, InP, and SiGe bipolar and field-effect transistors. Digital approaches may be used to carry out a variety of functions important in microwave systems, including signal generation, filtering, and frequency conversion. The digital implementation provides a variety of potential benefits, including lack of sensitivity to aging and component inaccuracies, flexibility, and programmability. The dynamic range and degree of nonlinearity can be specified by design. Signal storage and memory functions are easily accomplished. Single-chip integration of digital and microwave systems are also facilitated. The application of digital techniques in domains previously considered to be analog is an important ongoing technology thrust, which may be expected to accelerate. Critical interfaces between the digital and analog domains are provided by analog-to-digital converters, digital-to-analog converters, and fractional-frequency synthesizers. This paper reviews the prospects of digital techniques for microwave systems, and briefly describes the state-of-technology and future possibilities. Index Terms-Analog-to-digital conversion, digital signal processing, digital-to-analog conversion, high-speed digital integrated circuits. I. INTRODUCTION S IGNAL processing (including amplification, filtering, frequency generation, frequency conversion, and modulation) at microwave frequencies has traditionally been carried out with analog circuits. However, digital circuits are steadily advancing in capabilities. The technology advances promise to allow digital techniques to be used at frequencies well into the microwave region.

show abstract

Section: Digital Frequency Generationmentioning

confidence: 99%