DocumentCode :
1466169
Title :
A 6-GHz All-Digital Fractional- 
Frequency Synthesizer Using FIR-Embedded Noise Filtering Technique
Author :
Lee, I-Ting ; Lu, Hung-Yu ; Liu, Shen-Iuan
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume :
59
Issue :
5
fYear :
2012
fDate :
5/1/2012 12:00:00 AM
Firstpage :
267
Lastpage :
271
Abstract :
A 6-GHz all-digital fractional- 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- frequency synthesizer is fabricated in a 90-nm CMOS process, and it occupies 0.18 . 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.
Keywords :
CMOS integrated circuits; FIR filters; field effect MMIC; frequency synthesizers; microwave filters; phase noise; CMOS process; FIR-embedded noise filtering technique; all-digital fractional-frequency synthesizer; frequency 6 GHz; multiple matched analog components; out-of-band phase noise; power 28.8 mW; size 90 nm; voltage 1.2 V; Delay lines; Frequency synthesizers; Gain; Phase noise; Quantization; Solid state circuits; All-digital; delta–sigma modulator (DSM); digitally controlled oscillator (DCO); frequency synthesizer; quantization noise; time-to-digital converter (TDC);
fLanguage :
English
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-7747
Type :
jour
DOI :
10.1109/TCSII.2012.2188474
Filename :
6166445
Link To Document :
