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This paper proposes an on-chip measurement method of PLL transfer function. In our proposed scheme, we modulated the phase of the PLL input in triangular form using Digital-to-Time Converter (DTC) and read out the response by Time-to-Digital Converter (TDC). Combination of the DTC and TDC can obtain the transfer function of the PLL both in the amplitude domain and the phase domain. Since the DTC and...
This paper proposes a power integrity control technique for dynamically controlling power supply voltage fluctuations for a device under test (DUT). The proposed method controls the power supply voltage on an automatic test equipment (ATE) system in a feed-forward manner by supplying a compensation current into the power supply line based on the power supply voltage waveform difference between the...
A phase calibration scheme employing the training mode for phased array antenna systems is proposed. The proposed circuit realizes an automatic phase calibration using a DLL-like architecture which has a PFD and a CP. Two signals from the multiphase LO according to the phase difference of DoA, are put into the circuit and control the phase shifter. The output voltage of the CP controls the amount...
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