afz23
Full Member level 3
I am looking for a design to implement Phase locked DRO or PLDRO.
During literature survey, I find the only way to implement this is by using a SRD comb generator
and a phase detector to phase lock the Vt-DRO,it requires a sweep circuit too(sampling phase
locked detector,SPLD),which makes it too complicated.(Vt-DRO stands for voltage tunable DRO)
Why can't we use a PFD chip instead to phase lock Vt-DRO?like its done for VCO.It will
make things simpler,no need to use sweep circuit etc.
What is the technical difficulty ,can some one explain?
During literature survey, I find the only way to implement this is by using a SRD comb generator
and a phase detector to phase lock the Vt-DRO,it requires a sweep circuit too(sampling phase
locked detector,SPLD),which makes it too complicated.(Vt-DRO stands for voltage tunable DRO)
Why can't we use a PFD chip instead to phase lock Vt-DRO?like its done for VCO.It will
make things simpler,no need to use sweep circuit etc.
What is the technical difficulty ,can some one explain?