The digital PFD and the PW control modules are designed and simulated by using Verilog HDL code. These two designed modules will be integrated into the targeted ADPLL to achieve fast locking performance and ultra-low power for Ultra-High Frequency (UHF) RFID applications....
PLL Synthesizer With Multi-Programmable Divider and Multi-Phase Detector. Presents information on a study which proposed a prescaler-type phase locked loop (PLL) frequency synthesizer with multi-programmable divider and multi-pha... Sumi,Yasuaki,Obote,... - 《IEEE Transactions on Consumer Electronics...
In creating the model for each component, we make sure that we can easily change key parameters, such as the digital phase frequency detector gain, the digital low-pass filter coefficients, the oscillator gain, and the divider's division ratio. Parameterizing these values enables us to r...
PLLs are used more and more in the digital domain, this means that apart for the Phase Frequency Detector, also the loop filter and VCO need to be to be converted to discrete-time systems. The loop filter can be converted from Laplace to the z-domain using an appropriate transformation (...
1. A phase locked loop circuit, comprising: a controllable oscillator for generating an output signal of desired frequency; a first phase detection circuit for generating an output indicative of phase differential responsive to said output signal and a first edge of a reference signal; a second ph...