A High-Sensitivity and Low-Walk Error LADAR Receiver for Military Application

被引：85

作者：

Cho, Hong-Soo ^{[1
]}

Kim, Chung-Hwan ^{[2
]}

Lee, Sang-Gug ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea

[2] Wooriro Opt Telecom Co Ltd, Electroopt Lab, Taejon, South Korea

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2014年 / 61卷 / 10期

关键词：

LADAR; laser detection and ranging; laser radar; optical receiver; rangefinder; LASER-RADAR; CHANNEL;

D O I：

10.1109/TCSI.2014.2327282

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：

An integrated receiver with high sensitivity and low walk error for a military purpose pulsed time-of-flight (TOF) LADAR system is proposed. The proposed receiver adopts a dual-gain capacitive-feedback TIA (C-TIA) instead of widely used resistive-feedback TIA (R-TIA) to increase the sensitivity. In addition, a new walk-error improvement circuit based on a constant-delay detection method is proposed. Implemented in 0.35 mu m CMOS technology, the receiver achieves an input-referred noise current of 1.36 pA/root Hz with bandwidth of 140 MHz and minimum detectable signal (MDS) of 10 nW with a 5 ns pulse at SNR = 3.3, maximum walk-error of 2.8 ns, and a dynamic range of 1:12,000 over the operating temperature range of -40 degrees C to +85 degrees C

引用

页码：3007 / 3015

页数：9

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