# Help with exponential Fourier series

Discussion in 'Homework Help' started by HMA_, May 3, 2014.

1. ### HMA_ Thread Starter New Member

May 3, 2014
2
0
Hi everyone,

I am working in low pass filter (RL circuit) with a signal input

where x1(t)= 16u(t+0.25x10^(-6))-16u(t-0.25x10^(-6))
frequency =1MHz and 50% duty cycle

the question is to find y(t) ( the Voltage in the resistance )

I did find the transfer function H(W)
I tried to find the exponential Fourier series coefficients of x(t) and I did not get it

so could you pleases help me in this and show me how to find the Fourier series coefficients

2. ### WBahn Moderator

Mar 31, 2012
18,084
4,917
What is 1MHz with a 50% duty cycle?

3. ### HMA_ Thread Starter New Member

May 3, 2014
2
0
^^^^^

it is part of small project I just want to know how to get Fourier series coefficients

4. ### WBahn Moderator

Mar 31, 2012
18,084
4,917
I can't help you because I don't understand the problem as you have stated it. You are saying that something is 1 MHz with a 50% duty cycle. WHAT is 1 MHz with a 50% duty cycle?