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When analyzing a bang-bang phase locked loop (BBPLL), the hard nonlinearity is often linearized for analysis purposes with limited accuracy. This paper presents an accurate mathematical model of a BBPLL based on Markov Chains that is valid for all operating conditions. The proposed methodology is used to compute the BBPLL output steady-state jitter probability density function (PDF). Based on the...
Phase-to-digital converter (PDC) is a critical building block in digital phase-locked loops (DPLL). To improve its phase noise performance, an integer-N DPLL that employs an analog-to-digital converter (ADC) to digitize the phase error is presented. Compared to the conventional time-to-digital converter (TDC), the proposed ADC-based PDC with the same number of bits can be shown to reduce the quantization...
Antenna RF switches are radio frequency components used in spatial diversity systems in wireless communi-cations. In this paper, we investigate the transient effects of the antenna RF switching on the receiver front-end. We show experimentally that the duration of this effect can be significant compared to an OFDM (Orthogonal Frequency Division Multiplexing) guard period used in wireless systems....
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