in my lab we are looking forward to generating chirp pulses using the AD9914 Evaluation Board. Currently we are using the frecuency swept of the DRG combined with the on-off modulationa capabilities of the OSK to generate this signals as shows the following figure:
However, we would like to avoid the use of any external signal. According to that, we want to ask two questions:
Is it possible to control the OSK modulator using any internal signal from DDS instead of using an external signal?
2. Have you got any ideas of other ways to generate chirp pulses with the AD9914? (Any suggestion is welcome)