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Unformatted text preview: 1 5/19/2009 1 ECE2025 Summer 2009 Lecture 4 Periodic Signals, Harmonics & Time-Varying Sinusoids 20 May 09 5/19/2009 2 License Info for SPFirst Slides This work released under a Creative Commons License with the following terms: Attribution The licensor permits others to copy, distribute, display, and perform the work. In return, licensees must give the original authors credit. Non-Commercial The licensor permits others to copy, distribute, display, and perform the work. In return, licensees may not use the work for commercial purposesunless they get the licensor's permission. Share Alike The licensor permits others to distribute derivative works only under a license identical to the one that governs the licensor's work. Full Text of the License This (hidden) page should be kept with the presentation 5/19/2009 3 ANNOUNCEMENTS Special case: HW #1 due May 27, Wed, at start of lecture But pretend its due sooner! No lecture Monday May 25 (or Friday May 22) Enjoy your Memorial Day weekend! Go to first lab today (Wed) or Thursday Lab due the following week at the start of your lab (May 27 or 28) 5/19/2009 4 READING ASSIGNMENTS This Lecture: Chapter 3, Sections 3-2 and 3-3 Chapter 3, Sections 3-7 and 3-8 Next Lecture: Fourier Series ANALYSIS Fourier Series ANALYSIS Sections 3-4, 3-5 and 3-6 2 5/19/2009 5 Review of the SPECTRUM Add the spectrum components: What is the formula for the signal x(t)? 100 250 100 250 f (in Hz) 3 / 7 j e 3 / 7 j e 2 / 4 j e 2 / 4 j e 10 5/19/2009 6 Add Spectral Components t j j t j j t j j t j j e e e e e e e e t x ) 250 ( 2 2 / ) 250 ( 2 2 / ) 100 ( 2 3 / ) 100 ( 2 3 / 4 4 7 7 10 ) (...
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This note was uploaded on 01/24/2010 for the course ECE 2025 taught by Professor Juang during the Spring '08 term at Georgia Institute of Technology.
- Spring '08