A 4 GHz fractional-N frequency synthesizer
Electronics, Circuits and Systems, 2000. ICECS 2000. The 7th IEEE International Conference（2003）
摘要
A 4 GHz fractional-N frequency synthesizer for telecommunications applications is presented. The synthesizer includes a multiple-modulus ECL prescaler capable of operating at input frequencies of up to 4.3 GHz with a power dissipation of 17.6 mW, a third-order MASH modulator that controls the modulus of the prescaler, and a phase detector and chargepump that does not suffer from dead-zone problems. The synthesizer achieves a close-in phase noise of -66 dBc/Hz while dissipating only 27.7 mW from a 2.7 V supply. The synthesizer has been implemented in a 0.35 m BiCMOS technology
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关键词
bicmos integrated circuits,frequency synthesizers,mixed analogue-digital integrated circuits,phase detectors,prescalers,0.35 micron,17.6 to 27.7 mw,2.7 v,4.3 ghz,asic,bicmos technology,chargepump,fractional-n frequency synthesizer,mixed-signal ic,multiple-modulus ecl prescaler,phase detector,prescaler modulus control,telecommunications applications,third-order mash modulator,phase noise,power dissipation,bandwidth,frequency synthesizer,quantization,phase locked loops,phase modulation
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