koukei
Newbie level 4
Question:
1. to design one 2.4G frequency synthesizer for Mixer, one proposal is to design 2.4G frequency synthesizer with 2.4GHz LC VCO, directly ouput for Mixer. The other proposal is to design one 4.8G frequency synthesizer with 4.8GHz LC VCO, through one CML divider, generate 2.4GHz frequency, then output for Mixer. Which proposal is better.
2. 2.4GHz LC VCO can output good sine waveform, but if through CML divider, there have distortion in the CML divider, output waveform of CML divider is worse than the waveform directly output from LC VCO. Does it mean that the proposal the first proposal without CML divider is better?
Thanks,
1. to design one 2.4G frequency synthesizer for Mixer, one proposal is to design 2.4G frequency synthesizer with 2.4GHz LC VCO, directly ouput for Mixer. The other proposal is to design one 4.8G frequency synthesizer with 4.8GHz LC VCO, through one CML divider, generate 2.4GHz frequency, then output for Mixer. Which proposal is better.
2. 2.4GHz LC VCO can output good sine waveform, but if through CML divider, there have distortion in the CML divider, output waveform of CML divider is worse than the waveform directly output from LC VCO. Does it mean that the proposal the first proposal without CML divider is better?
Thanks,