34.SSD(EE-2080)L34_7april

34.SSD(EE-2080)L34_7april - Small Signal Response + Small...

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SSD(EE-2080) Lecture 34 Dr. Shiv Govind Singh sgsingh@iith.ac.in Assistant Professor Electrical Engineering Semester 2, Y-2010/11
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Reference Text Book: 1. Physics of Semiconductor Devices, S. M. Sze , John Wiley & Sons (1981). 2. Solid State Electronics by Ben G. Streetman and Sanjay Banerjee , Prentice Hall International , Inc. 3. Semiconductor Physics and Devices, Donald A. Neamen, Tata Mcgraw-Hill Publishing company Limited. Reference Book: Semiconductor Device Fundamental R. Pirret
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Unformatted text preview: Small Signal Response + Small Signal Response (CE) Short Circuit Current Gain Base Transit Time Collector Transit Time Adding Together High Signal Response Current ‐ gain cutoff frequency, f T Even Better Transistor Graded base transport Polysilicon Emitter Heterojunction bipolar transistor Emitter bandgap > Base Bandgap Heterojunction Bipolar Transistors i) Wide gap Emitter HBT ii) Double Heterojunction Bipolar Transistor Base‐Collector Breakdown Voltages CB/CE...
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34.SSD(EE-2080)L34_7april - Small Signal Response + Small...

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