chirp with carrier frequency using LinearFMWaveform

Hello,

Regarding the object phased.LinearFMWaveform, if wished to design a chirp with a specific carrier frequency, would that be equivalent to the specifying the property 'frequency offset'?

Thanks in advance.

Katia

Answer 1

[Chunru]

phased.LinearFMWaveform is a baseband implementation by design for efficiency. The 'frequency offset' is used to modify the sweeping frequency band. Theoretically, it may be used to simulate a passband signal; but you need to have a very large sampling frequency and large offset.

One efficient way for implementing carrier is to use phased.LinearFMWaveform for baseband signal generation, and then implement a modulator in a seperate object. (there are system object for modulation).

[Katia]

Thank you for your answer, that was very helpful.