Frequency Spectrum of the Rectangular, Triangular and Trapezoidal Signal
Channel: IFE - TU Graz
Date: 2021-08-20

EMC problems usually occur at higher frequencies than the highest internal frequency. The reason for this is that any arbitrary signal can be composed of many single sinusoidal signals. Thus, a 20MHZ clock signal may cause problems at 100MHz. This video first shows how the frequency spectrum of a rectangular signal, triangular signal and trapezoidal signal looks mathematically. Afterwards, the determined formula is explained and proven in the laboratory.

Tutor: Ko Odreitz

00:00 - Intro
00:56 - Fourier
03:00 - Rectangular signal
04:38 - Triangular signal
05:48 - Trapezoidal signal
06:31 - Lab equipment
09:53 - Initial signal
11:53 - Rise & Fall times
13:44 - Any duty cycle
15:56 - 50% duty cycle
17:04 - RBW

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