hello sir, I have few more doubts, kindly clarify
1) Even after loading in the default mode the PLL is not locking. The output is not stable at 7GHz but the lock detector LED is ON. For the frequencies upto 2GHz the output is stable.
2) I had checked the communication and everything was fine, But I don't know why the behavior is poor at higher frequencies.
3) The tuning voltage to the VCO is same for all the frequencies. As per my knowledge the VCO output frequency changes based on input tuning voltage. (As loop filter configuration is same in all the cases).
4) How can you claim that the designed loop filter works for the entire frequency range when it is designed for 15GHz. Even though there are different VCO cores available.
thanks in advance
