Bandpass filter for signal.

Hello,

I need to find values from my sensor. I have recorded signal, I draw fftplot from it, which looks like at the picture:

I can see that on frequencies 433.8-434 i can find my signal.

Now i would like to filter this frequency and find this signal values.

Could anybody help me?

Details of signal:

• Sampling Frequency 1.8MHz
• signal length 9443013 samples
• center frequency 403.502MHz
• Sensor owner told me that there is no modulation

Thanks for help

[Akira Agata]

If you have Sigmal Processing Toolbox, bandpass function would be simple and easy way to do this task. More details can be found in the following help page:

https://www.mathworks.com/help/signal/ref/bandpass.html