Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT...
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Transcript of Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT...
![Page 1: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/1.jpg)
Amplifier Design and Modeling
Doug Bouler: CURENT REU
Dr. Daniel Costinett: Mentor
Final CURENT Presentation
7/18/2014
Knoxville, TN
![Page 2: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/2.jpg)
Outline
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1. Research goals2. Process
• Class A Amplification• Class AB Amplification• Model and Transfer Characteristic
3. Results 4. Future Work
![Page 3: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/3.jpg)
Research Goals
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• Design and Model a Class AB amplifier using LT-spice and MATLAB
• Make Class AB amplifier capable of amplifying an audio signal
• Test Magnitude and Phase Response
![Page 4: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/4.jpg)
Class A Amplifiers
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Vgate-source = Vrail x (R2 / R1 + R2)
R1/R2 = (Vrail - Vgs ) / Vgs
Input Signal
Voltage Rail
Output Signal
Vgs
![Page 5: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/5.jpg)
Class A Amplifiers
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Data of DC Analysis from 0V to 3V DC to find midpoint of slope
Optimal Vgs
Input Signal
Output Signal
VGS
VDD
Cutoff Region
![Page 6: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/6.jpg)
Class A Amplifiers
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Vgate-source = Vrail x (R2 / R1 + R2)
Vgate-source = Vrail x (R2 / R1 + R2)
Voltage Loss
![Page 7: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/7.jpg)
Class AB Amplifiers
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Class A
Class AB
Matching Transistors
![Page 8: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/8.jpg)
Class AB Amplifiers
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Matching Transistors
Class B Output Stage
Class AB Output Stage
![Page 9: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/9.jpg)
Modeling Process
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Collect Data from Output of Amplifier Stage
Normalize Data in MATLAB
Graph Input and Output
Voltage Response
Develop Transfer
Characteristic
Model Audio Response
![Page 10: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/10.jpg)
Results
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This figure shows the frequencies at which the magnitude of the output signal begins to attenuate
4000 Hz
![Page 11: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/11.jpg)
Results
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• η = Pout / Pin = 44.64%
• A = Vout / Vin = 40 V/V
![Page 12: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/12.jpg)
Future Work
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• Research methods of Wireless Power Transfer (WPT)
• Research Specific Absorption Rates (SAR) of WPT for Biomedical applications
• Use knowledge gained from this project to begin designing devices capable of WPT
![Page 13: Amplifier Design and Modeling Doug Bouler: CURENT REU Dr. Daniel Costinett: Mentor Final CURENT Presentation 7/18/2014 Knoxville, TN.](https://reader034.fdocuments.us/reader034/viewer/2022051820/56649d845503460f94a6b355/html5/thumbnails/13.jpg)
“This work was supported primarily by the Engineering Research Center
Program of the National Science Foundation and the Department of Energy
under NSF Award Number EEC-1041877 and the CURENT Industry Partnership
Program. "
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Acknowledgements