I-Ting LeeHung-Yu LuSHEN-IUAN LIU2018-09-102018-09-102012-0515497747http://scholars.lib.ntu.edu.tw/handle/123456789/374057https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862779829&doi=10.1109%2fTCSII.2012.2188474&partnerID=40&md5=abbc43b8faa47e480b1f26d4de57431fA 6-GHz all-digital fractional-N frequency synthesizer using an FIR-embedded noise filtering technique is presented. This noise filtering technique is realized in the digital domain without multiple matched analog components. This fractional-N frequency synthesizer is fabricated in a 90-nm CMOS process, and it occupies 0.18 mm2. Its power is 28.8 mW with a supply of 1.2 V. The measured out-of-band phase noise at an offset of half the reference frequency is improved by more than 13 dB around 6 GHz considering cancellation variations for different output frequencies. © 2004-2012 IEEE.All-digital; delta-sigma modulator (DSM); digitally controlled oscillator (DCO); frequency synthesizer; quantization noise; time-to-digital converter (TDC)[SDGs]SDG7FIR filters; Frequency converters; Modulators; Phase noise; All digital; Delta sigma modulator; Digitally controlled oscillators; Quantization noise; Time to digital converters; Frequency synthesizersjournal article10.1109/tcsii.2012.21884742-s2.0-84862779829WOS:000304150000003