How do you generate a UWB Chirp?

Hello. I have to generate a chirp from 3.2 Ghz to 3.5 Ghz with a "duration" of 5 time periods and Fs=50e9. I do not know where and how to start. I tried "help chirp" but i cannot understand how to generate the signal i want.

Answer 1

[Birdman]

You mean this?

f0=3.2e9;
f1=3.5e9;
t=0:50e-9:5*50e-9;
t1=t(end);
y = chirp(t,f0,t1,f1);
plot(t,y)

[Birdman]

Ups yes exactly, correct that please. :)

f0=3.2e9;
f1=3.5e9;
t=0:1/50e9:5*1/50e9;
t1=t(end);
y = chirp(t,f0,t1,f1);
plot(t,y)

[Birdman]

Actually, it has something to do with t vector. If you choose it to have 5*period*sample rate, it is not enough. Try this:

f0=3.2e9;
f1=3.5e9;
t=0:1/50e9:50/50e9;
t1=t(end);
y = chirp(t,f0,t1,f1);
plot(t,y)

[Rik]

Deleted comments:

Dear Birdman, first of all thank you for your time and answer. Secondly, when you generate the time vector ( t ), you're doing " t= 0 : sample_rate : 5 period * sample_rate", correct? I have noticed that in your case, it's not 1/50e9, but 50/1e9 . Please correct me if I'm wrong.

When I ran your code I got the signal in the image and I don't think it should look like that. Could you please help me clarify whether the output is good or wrong?