This paper presents a new circuit topology of a phase-locked loop that can be used for synchronising a singlephase wind turbine generator (WTG) with the low voltage utility grid. The circuit is based on the time-delay digital tanlock loop (TDTL) architecture and was modelled and simulated using Simulink/MATLAB. The results presented demonstrate the ability of the circuit not only to synchronise...

Introduction: A wide tuning range for a PLL can be achieved by incorporating a frequency-locked loop (FLL) in parallel with the PLL. The key building block of an FLL is the frequency detector (FD) that determines the difference between the oscillator’s divided clock (CKV) and the reference clock (REF). There are many ways to accomplish frequency lock in digital PLLs, but all of them suffer from...

Here we present a Continuous Wave radar receiver with a digital noise cancellation circuit. The leakage signal is cancelled by the mixer/PLL followed by an analog low pass filter also works as anti aliasing filter for the Ato-D. The digital signal processing after A-to-D cancels the analog thermal noise from front end which is mathematically AWGN in nature. We assume synchronous CDMA transmissi...

This paper presents the design rationale and measured results of a low power, low jitter, PVT-stable FBAR-based RF synthesizer implemented in 0.13μm CMOS. A digitally controlled FBAR oscillator, tuned with a switched-capacitor array, provides 5800ppm of frequency tuning, sufficient to cover a wide range of manufacturing and temperature variations of an FBAR. An all-digital phase-locked loop (AD...

This work concerns with the design and analysis of phase locked loops (PLLs). In the last decade a lot of works have been done about the analysis of PLLs. The phase locked loops are analyzed briefly, second order, third order, and fourth order. In practically the design of 1.3 GHz, 1.9V second order PLL is considered. SPICE simulation program results confirm the theory. Key-Words: Phase Locked ...

A high-speed triangular-modulated spread-spectrum clock generator using a fractional phase-locked loop is presented. The fractional division is implemented by a nested fractional topology, which is constructed from a dual-modulus divide-by-(N–1/16)/N divider to divide the VCO outputs as a first division period and a fractional control circuit to establish a second division period to cause the o...

The paper studies the dynamics of a conventional positive going zero crossing type digital phase locked loop (ZC1-DPLL) taking non-ideal responses of the loop constituent blocks into account. The finite width of the sampling pulses and the finite propagation delay of the loop subsystems are properly modeled mathematically and the system dynamics is found to change because of their inf luence co...