A 1.5-GHz 6.144T Correlations/s 64 x 64 Cross-Correlator With 128 Integrated ADCs for Real-Time Synthetic Aperture Imaging

被引：9

作者：

Bell, John ^{[1
]}

Knag, Phil ^{[1
,2
]}

Sun, Shuanghong ^{[1
]}

Lim, Yong ^{[1
,3
]}

Chen, Thomas ^{[1
]}

Fredenburg, Jeffrey ^{[1
]}

Chen, Chia-Hsiang ^{[1
]}

Zhai, Chunyang ^{[1
]}

Rocca, Aaron ^{[1
]}

Collins, Nicholas ^{[1
]}

Tamez, Andres ^{[1
]}

Pernillo, Jorge A. ^{[1
]}

Correll, Justin M. ^{[1
]}

Tanner, Alan B. ^{[4
]}

Zhang, Zhengya ^{[1
]}

Flynn, Michael P. ^{[1
]}

机构：

[1] Univ Michigan, Ann Arbor, MI 48109 USA

[2] Intel Corp, Hillsboro, OR 97124 USA

[3] Samsung Elect, Yongin 17113, South Korea

[4] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91125 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2017年 / 52卷 / 05期

关键词：

Circuits; Mixed analog digital integrated circuits; Synthetic aperture radar; System-on-chip; RADIOMETRY; GEOSTAR; EARTH;

D O I：

10.1109/JSSC.2017.2660059

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A 65-nm CMOS, 18-mm(2), 1.5-GHz 64 x 64 cross-correlator with 128 on-chip analog-to-digital converters (ADCs) enables real-time synthetic aperture radiometric imaging. This brief enables high-resolution synthetic aperture radiometry by greatly improving the integration and energy efficiency of the mixed-signal baseband cross-correlator. The design supports analog-in and digital correlation out, removing approximately 5 W of power that would otherwise be needed for I/O between the ADCs and the digital correlation core. The prototype 6.144T correlation/s 1.5 Gsamples/s 64 x 64 correlator is designed for satellite-based radiometric imaging of water in the atmosphere. Massive parallelism together with an optimized correlation scheme leads to a measured energy consumption of only 0.35 pJ/correlation/cycle. A correlation efficiency greater than 90% is achieved for input signal levels greater than -30 dBm.

引用

页码：1450 / 1457

页数：8

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