hrkhari
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Hi Guys:
I have a related problem. I simulated my LC-VCO and it has around -84dBc/Hz of phase noise at 10kHz, I used an open drain 50Ohms Ft doubler circuit as a buffer, when I replace the biasing point with a BGR, the phase noise drops to -60dBc/Hz. My BGR has a 70dB of PSRR for flat band of 10kHz, with no external capacitor and 2mV of VREF variation with respect to temperature. The question is:
1. Is BGR referencing a common practice in biasing RF-VCO?, if no, any suggestion? 2. How do I increase my Phase noise
Thanks in advance
Rgds
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