Hi everyone,
I am a master student, my lab focus on low-speed design and application, I am the only one who tries to design high-speed circuit, so I have no clue about these things.  My given target is to design a high-speed CDR, before I complete the cdr design, I wish to tapeout the VCO first. For high-speed CDR(20Gbs), it needs the chip on (PCB) test board to test and measure, am I right? How about VCO?  
Thanks,
regards.