Charge-Sampling DTC based Fractional-N Phase-Locked Loop with Background DTC Gain Calibration

Phase-locked loops (PLLs) are ubiquitous in many RF applications such as frequency synthesizers in wireline and wireless transceivers. In this project, a charge-sampling PLL has been designed, which employs a charge-domain sub-sampling phase detector. The high gain of the phase detector helps suppress the in-band phase noise, while the lowered...