Lab3 Passive filters - 3 PASSIVE FILTERS 3.1 OBJECTIVES The...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
3 P ASSIVE FILTERS 3.1 O BJECTIVES The objective of this lab is to understand the functioning of two RC networks in the Time and Frequency domain. 3.2 I NTRODUCTION Filters are used to suppress undesired frequencies in signals (such as noise) and to avoid a phenomenon called aliasing. RC passive filters are simple in design, but have limited performance. In this lab you will analyze the transient response of the filter (step response) as well as the frequency domain behavior. The first step is to simulate the filter performance using MatLab and secondly to construct the filters and analyze their behavior using an oscilloscope. Low pass filter: A low pass filter passes low frequencies and rejects high frequencies from the input signal. This also acts as an integrator at appropriate frequencies. A first order, low pass RC filter is an RC series circuit across the input, with the output taken across the capacitor. We assume that the output of the circuit is connected only to high impedance (not connected), so that the current is the same in both R and C.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

Lab3 Passive filters - 3 PASSIVE FILTERS 3.1 OBJECTIVES The...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online