Analog baseband chain with analog to digital converter (ADC) of Synthetic Aperture Radar (SAR) receiver

Author

Bakar, F.A. ; Nieminen, Tero ; Nehal, Qaiser ; Ukkonen, Pekka ; Saari, Ville ; Halonen, Kari

Author_Institution

Sch. of Electr. Eng., Dept. of Micro- & Nanosci., Aalto Univ., Aalto, Finland

fYear

2011

fDate

12-16 Sept. 2011

Firstpage

207

Lastpage

210

Abstract

An analog baseband chain together with an analog to digital converter (ADC) for a Synthetic Aperture Radar (SAR) receiver implemented in 130nm CMOS technology is presented in this paper. The baseband and the ADC are integrated on a single chip, occupying 1.6mm² (I and Q branch) of active silicon area. The baseband is selectable between 50MHz and 160MHz bandwidth through switches and the voltage gain can be controlled between 22dB and 27dB. The ADC has selectable mode of 5, 6, 7 and 8 bits via control switches. The baseband and the ADC achieve measured spurious-free dynamic range more than 45dBc over the 160MHz band. The circuits, which use a 1.2V supply voltage, dissipates minimum power of 214mW with 50MHz baseband and 5 bit mode ADC, and maximum power of 344mW with 160MHz baseband and 8 bit mode ADC.

Keywords

CMOS integrated circuits; analogue-digital conversion; synthetic aperture radar; ADC; CMOS technology; SAR receiver; active silicon; analog baseband chain; analog-to-digital converter; frequency 160 MHz; frequency 50 MHz; power 214 mW; power 344 mW; spurious-free dynamic range; synthetic aperture radar; voltage 1.2 V; word length 5 bit; word length 8 bit; Analog-digital conversion; Bandwidth; Baseband; Gain; Receivers; Synthetic aperture radar; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC (ESSCIRC), 2011 Proceedings of the

Conference_Location

Helsinki

ISSN

1930-8833

Print_ISBN

978-1-4577-0703-2

Electronic_ISBN

1930-8833

Type

conf

DOI

10.1109/ESSCIRC.2011.6044901

Filename

6044901