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Register a new userLow noise transimpedance amplifier design
تصميم مضخم نقل ممانعة منخفض الضجيج
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هدف هذا البحث هو دراسة تقريب مبسط من أجل تصميم مضخمات أولية نقل ممانعة منخفضة الضجيج باستخدام ترانزيستورات ثنائية القطبية من أجل المستقبلات الضوئية. اِشْتُقَّتِ الحلول التحليلية من أجل الانحياز الأمثلي و ضجيج تيار الدخل المكافئ. ثم أُنجزت الدراسة بإجراء مقارنة بين الدارات المصممة. حسِب ضجيج تيار الدخل المكافئ بإدخال المعاملات إلى و باستخدام برنامج مكتوب matlab باستخدام برنامج محاكاةmultisim من أجل كشف إشارة نبضية بعرض نبضة 30ns.
The aim of this research is to study a simplified approach for the design of low-noise bipolar transimpedance preamplifiers for optical receivers. Analytical solutions for optimum biasing and minimum equivalent input-noise current were derived. The study was achieved by doing comparison between the designed circuits. The equivalent input noise current was calculated by entering the parameters in Matlab program and using Multisim as a simulation tool to detect a pulse signal of 30ns width.
Artificial intelligence review:
Research summary
يهدف هذا البحث إلى تصميم مضخمات نقل ممانعة منخفضة الضجيج باستخدام ترانزستورات ثنائية القطبية لتطبيقات المستقبلات الضوئية. تتطلب هذه المستقبلات مضخمات ذات عرض نطاق ترددي واسع وضجيج منخفض. تم اشتقاق الحلول التحليلية لتحقيق التحيز الأمثل وضجيج تيار الدخل المكافئ، وتمت المقارنة بين الدارات المصممة باستخدام برامج المحاكاة مثل Matlab وMultisim. تم التركيز على تصميم ثلاث دارات لمرحلة الدخل وهي: دارة باعث مشترك، دارة Cascode، ودارة دارلينغتون. أظهرت النتائج أن دارة دارلينغتون توفر أفضل أداء من حيث ضجيج تيار الدخل المكافئ وحساسية الكشف للإشارات الضعيفة.
Critical review
تعتبر الدراسة مفيدة جداً في مجال تصميم مضخمات نقل الممانعة منخفضة الضجيج، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، كان من الأفضل تقديم تحليل أكثر تفصيلاً حول تأثيرات الضجيج المختلفة على أداء الدارات. ثانياً، لم يتم التطرق بشكل كافٍ إلى تأثير العوامل البيئية مثل درجة الحرارة على أداء المضخمات. ثالثاً، كان من الممكن توسيع الدراسة لتشمل مقارنة مع تقنيات أخرى غير الترانزستورات ثنائية القطبية. بشكل عام، البحث جيد ويقدم مساهمات قيمة، لكن هناك مجال لتحسين وتوسيع الدراسة.
Questions related to the research
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ما هو الهدف الرئيسي من هذا البحث؟
الهدف الرئيسي هو تصميم مضخمات نقل ممانعة منخفضة الضجيج باستخدام ترانزستورات ثنائية القطبية لتطبيقات المستقبلات الضوئية.
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ما هي الدارات الثلاث التي تم دراستها في البحث؟
تم دراسة ثلاث دارات لمرحلة الدخل وهي: دارة باعث مشترك، دارة Cascode، ودارة دارلينغتون.
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ما هي البرامج المستخدمة في محاكاة الدارات؟
تم استخدام برامج Matlab وMultisim لمحاكاة الدارات.
-
ما هي الدارة التي أظهرت أفضل أداء من حيث ضجيج تيار الدخل المكافئ؟
دارة دارلينغتون أظهرت أفضل أداء من حيث ضجيج تيار الدخل المكافئ وحساسية الكشف للإشارات الضعيفة.
References used
Z. Bielecki, W. Kolosowski, R. Dufrene, and M. Borejko, "Low noise optical receiver" 11th GAAS Symposium- Munich 2003
G. Ghione, semiconductor devices for highspeed optoelectronics, Cambridge University press,2009
T. Ruostalainen. Integrated Receiver Channel Circuits & structures for a Pulsed Time-of- Flight Laser Radar. Academic dissertation, Oulo Univ. 1999
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