ECEN 2260 - Circuits/Electronics 2

Required - 5 credit hours
On-Line Course Materials

Catalog Description: This course continues the basic circuit analysis of ECEN 2250. Laplace transform techniques, the transfer function, and convolution. Frequency response, Bode diagrams, and resonant circuits. Fourier series expansions. A hands-on laboratory experience is included.

Prerequisites: APPM 2360, Linear Algebra/Differential Equations and ECEN 2250, Circuits/Electronics 1

Textbook: Thomas and Rosa, The Analysis and Design of Linear Circuits, 5th Ed., Wiley, 2006

Course objectives: ECEN 2260 introduces the student to signal processing circuits and systems including frequency domain analysis and second-order system response in the time and frequency domains. It reinforces these concepts via in-depth laboratory experiments and a short design project. It also assists in the development of problem-solving abilities, including physical thinking, approximation techniques, and design-oriented analysis.

Topics Covered:

• Review: Complex variables, phasor analysis, circuit analysis
• Laplace Transform: Transforms of waveforms, properties, inverse transforms via partial fraction expansion, pole location vs. nature of response
• Circuit analysis in s-domain: Transformed circuits, handling initial conditions, transfer functions, applications of superposition, second-order circuit examples
• Frequency response and Bode diagrams: Filter circuits, magnitude and phase asymptotes, resonant circuits, Butterworth and Chebyshev filters
• Block diagrams: Modeling systems via block diagrams, rules for simplifying
• Fourier series: Rectangular, polar, and exponential forms. Waveform symmetries. Effect of filters on waveform spectra. Complex power and rms values vs. Fourier series
• Introduction to feedback: Op amp feedback examples, effect of feedback on transfer functions and gain/bandwidth, intro to stability
• Exams and review for exams

Laboratory Objectives:

1. Develop design and project skills
• Lab includes a multi-week open-ended design project at end of courseLearn to identify, formulate, and solve engineering problems in a circuits/systems context
• Multi-week assignments involving analysis and modification of circuits having multiple blocks. Students apply theory from course to circuits and systems that do interesting things
2. Learn laboratory skills, modern hardware, and tools
• Simulation and measurement of circuits and systems
3. Analysis and interpretation of data
• Frequency and transient response measurements
4. Writing skills
• Written lab reports and prelab assignments

Laboratory Topics:

1. Voltage-controlled oscillator (2 weeks)
2. Transient response of a second-order system (2 weeks)
3. Measurement of transfer functions and impedance (3 weeks)
4. Design, construction, and testing of a Butterworth filter (3 weeks)
5. Color organ design project (4 weeks)

Class and laboratory hours: 3 hours of lecture and 4 hours of laboratory per week

Contribution of course to meeting the professional component: Contributes 5 semester hours to criterion 4(b) “one and one-half years of engineering topics, consisting of engineering sciences and engineering design appropriate to the student's field of study.”

Relationship of course to program outcomes:

3a	3b	3c	3d	3e	3f	3g1	3g2	3h	3i	3j	3k
H	H	M		H			M				H

Prepared by: ECEN2260 assessment team: Bob Erickson (chair), Peter Mathys, Garret Moddel, Todd Murphey, Francois Meyer, and by V. Heuring
DATE: May 16, 2005.