Sheet 3 Fourier Series and Signal Analysis PDF
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Faculty of Engineering, Alexandria University
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This document contains questions on exponential Fourier series and signal analysis. Different types of signals are explored, with a focus on calculation of Fourier coefficient spectra, finding power contents of various frequency components, and analyzing the time and frequency domain characteristics of signals and using bandpass filters.
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Sheet 3 1. Find the Exponential Fourier series of the periodic signal 𝑔𝑃 (t), sketch the Fourier coefficient spectrum at 𝑇𝑜 =2𝜏. 𝑇𝑜 =5𝜏. ∞ 𝑡 − 𝑛𝑇𝑜 𝑔𝑃 (t) = ∑ 𝐴 𝒓𝒆𝒄𝒕 ( )...
Sheet 3 1. Find the Exponential Fourier series of the periodic signal 𝑔𝑃 (t), sketch the Fourier coefficient spectrum at 𝑇𝑜 =2𝜏. 𝑇𝑜 =5𝜏. ∞ 𝑡 − 𝑛𝑇𝑜 𝑔𝑃 (t) = ∑ 𝐴 𝒓𝒆𝒄𝒕 ( ) 𝜏 𝑛=−∞ 2. Find the Exponential Fourier series for 𝑔𝑃 (t), sketch the Fourier coefficient spectrum at 𝑇𝑜 =2𝜏. ∞ 𝑡 − 𝑛𝑇𝑜 𝑔𝑃 (t) = ∑ 𝐴 Ʌ ( ) 𝜏 𝑛=−∞ 3. You have the following signal ∞ 𝑔𝑃 (t) = 4 ∑ 𝒕𝒓𝒊 (𝟐 × 10−3 𝑡 − 4n) 𝑛=−∞ sketch this signal 𝑔𝑃 (t) in time domain Find the Fourier series and sketch the Fourier coefficient spectrum. Find the power contents in each of the following frequency components (0 HZ, 4 KHZ, 8 KHZ, and 12 KHZ). 4. You have the following signal ∞ 𝑔𝑃 (t) = ∑ 8 𝒓𝒆𝒄𝒕 (104 − 5n) 𝑛=−∞ sketch this signal 𝑔𝑃 (t) in time domain Find the Fourier series and sketch the Fourier series coefficient 𝐶𝑛. Find and sketch 𝑔𝑃 (t) , S(f). Calculate the power of components at (0 HZ, 1 KHZ, and 2 KHZ). If 𝑔𝑃 (t) is applied to a Band path filter (B.P.F) centered at 2 KHZ and band width B.W= 1 KHZ , sketch its output in time and frequency domain.