[1]于慧俊,肖立志,朱萬里,等.核磁共振測井儀低噪聲模擬接收電路設計[J].測井技術,2013,37(02):183-186.
 YU Huijun,XIAO Lizhi,ZHU Wanli,et al.Low Noise Analog Receiver Design for NMR Logging Tool[J].WELL LOGGING TECHNOLOGY,2013,37(02):183-186.
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核磁共振測井儀低噪聲模擬接收電路設計()
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《測井技術》[ISSN:1004-1338/CN:61-1223/TE]

卷:
第37卷
期數:
2013年02期
頁碼:
183-186
欄目:
測井儀器
出版日期:
2013-04-30

文章信息/Info

Title:
Low Noise Analog Receiver Design for NMR Logging Tool
作者:
于慧俊肖立志朱萬里李新S.AnferovaV.Anferov
油氣資源與探測國家重點實驗室, 中國石油大學, 北京 102249
Author(s):
YU HuijunXIAO LizhiZHU WanliLI XinS.AnferovaV.Anferov
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
關鍵詞:
核磁共振測井儀 低噪聲 模擬接收電路 放大器 噪聲性能 電路設計
Keywords:
NMR logging tool low noise analog receiver amplifier noise performance circuit design
分類號:
P631.53
文獻標志碼:
A
摘要:
設計了一種用于核磁共振測井儀的低噪聲模擬接收電路。第1級放大為自主構建的儀器用放大器,其增益為52 dB,選用最佳源電阻與天線諧振阻抗相近的超低噪聲寬帶運放LMH6626保證電路的低噪聲性能。對第1級放大器的噪聲性能進行了理論分析,其噪聲系數為1.45。實驗測試結果表明,電路最大增益為112 dB,頻率范圍為400 kHz~1 MHz,可對核磁共振信號進行低噪聲放大,并已成功應用于核磁共振測井儀實驗室樣機中。
Abstract:
We present a novel low noise analog receiver for nuclear magnetic resonance (NMR) logging tool. The first stage is home-built tool amplifier, and the designed gain is 52 dB. The first stage uses ultra low noise wideband operational amplifier LMH6626 which its optimum source resistance is very close to the antenna impedance to guarantee the optimum noise performance. The noise performance of first stage was analyzed, and the calculated noise figure is 1.45. Test results show that the maximal gain of analog receiver is 112 dB and the frequency bandwidth is from 400 kHz to 1 MHz. The analog receiver has been used for laboratory prototype NMR logging tool successfully and can amplify NMR signal with low noise performance.

參考文獻/References:

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備注/Memo

備注/Memo:
收稿日期:2012-5-21
文章編號:1004-1338(2013)02-0183-04
基金項目: 國家863項目(2007AA06Z230)和科技部國際合作項目(2009DFA61030)聯合資助
作者簡介: 于慧俊,男,1983年生,博士研究生,從事核磁共振測井儀器和低場核磁共振儀器研制工作。
更新日期/Last Update: 2013-04-30
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