EDN

Optimizing VCO PLL Evaluations & PLL Synthesizer Designs

Today’s mobile communications systems demand higher communication quality, higher data rates, higher frequency operation, and more channels per unit bandwidth. As much of this equipment is portable, ...
EDN

Good behavioral model simulation: key to predicting first-order PLL synthesizer performance (Part 1 of 2)

In this article, the phase noise of a closed-loop, phase-locked loop (PLL) synthesizer is simulated using Agilent RF Design Environment (RFDE) and Advanced Design System (ADS) tools. The critical ...
TechRepublic

Behavioural Modelling and Simulation of PLL Based Integer N Frequency Synthesizer using Simulink

Behavioral modeling and simulation of a PLL based integer n frequency synthesizer has been illustrated in this paper. The synthesizer generates a signal of 5.15-5.25GHz in the UNII (Unlicensed ...
Electronic Design

Integer-N PLL/Synthesizer Suppresses System Noise

The LTC6945 6-GHz, integer-N frequency synthesizer specifies a normalized closed-loop in-band phase noise of -226 dBc/Hz and a normalized in-band 1/f noise of -274 dBc/Hz. Wideband phase noise floor ...
Electronic Design

Phase-Noise Modeling, Simulation, and Propagation in Phase-Locked Loops (Part 3)

Some brief theory and typical measurements of phase noise. How to produce the lowest phase noise at a PLL output. A standard design procedure for a typical Type 2, second-order loop. As stated in ...
Nature

Phase-Locked Loop Design in CMOS Technology

Phase-locked loops (PLLs) are indispensable timing and frequency synthesis circuits, finding application in communication transceivers, clock distribution, navigation receivers and sensor interfaces.