PLL Frequency Synthesizers:Phase Noise Issues and Wide-band Loops

happyang

Abstract: PLL frequency synthesizers are widely used in telecommunication receivers and transmitters, as part of the frequency conversion block. They consist of a tunable oscillator and a programmable phase controlling loop. Current tendencies in PLL development focus noise performance and a higher integration level. The first is connected to the new digital modulation techniques, often demanding a higher CNR in the signal chain. And the second concerns a global trend towards smaller and more compact...

tman001

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