High-Speed Digital-to-Analog Converter Using Schottky Diode Samplers

Author

Sun, Kae-Oh ; Van der Weid, Daniel Warren

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI

Volume

54

Issue

12

fYear

2006

Firstpage

4291

Lastpage

4296

Abstract

A new digital-to-analog converter (DAC) structure employing Schottky diode samplers has been developed for very high-speed operation. Instead of switching used for conventional DACs, sampling of a digital bit stream is employed to retrieve the analog signals based on sampling theory. The sampled signals are added using an R-2R resistive ladder network. The samplers are designed to provide impedance matching for reflected signals. The DAC was fabricated as a hybrid circuit, and it achieved 1 Gs/s. Due to its transmission-line architecture, our design is scalable for use at much higher frequencies, as well as higher resolutions

Keywords

Schottky diodes; digital-analogue conversion; ladder networks; signal sampling; Schottky diode samplers; analog signal retrieval; digital-to-analog converter; hybrid circuit; impedance matching; resistive ladder network; sampling theory; transmission line architecture; Circuits; Coplanar waveguides; Digital-analog conversion; Frequency; Impedance matching; MOSFETs; Sampling methods; Schottky diodes; Sun; Switches; Digital–analog conversion; Schottky diode; digtial-to-analog converter (DAC); sampler;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2006.883602

Filename

4020490