ELEC2320 Lecture 5: ELEC2320 W05L01

• School: University of Newcastle
• Department: Electrical Engineering
• Course: ELEC2320
• Professor: Kaushik Mahata

Document Summary

Analog desugns are used for various signal processing applications. The design of the circuits depend on the signal characteristics. Pratical signals are neither dc, nor sinusoidal. Use ac and dc analysis techniques to handle arbitrary signals. Fourier theory allows us to represent an arbitrary signal s(t) as a sum of sinusoids. The frf from an input signal vi to an output vo(t) is a function g(j ) of the angular frequency . To evaluate g(j ) at a frequency : set vi(t) = a cos( t + , measure/calculate the corresponding stead state output, which is of the form, becomes: If the frequency response is known, the output of a known sinusoidal input of any frequency can be determined. Frf from input to output of a capacitor is: Frf from input to output of an inductor is: Decibel is used to measure gain in audio electronics. Decibel form is logarithmic, mimicing the behaviour of the human ear.