DocumentCode
2879807
Title
Cascaded quality factor of ring LC oscillators
Author
Gu, Zheng ; Thiede, Andreas
Author_Institution
Dept. of Electr. Eng. & Inf. Technol., Paderborn Univ., Germany
fYear
2004
fDate
8-9 Nov. 2004
Firstpage
43
Lastpage
47
Abstract
This paper analyzes the cascading effect of the quality factors (Qs) under various definitions. Under the appropriate definitions, the effective Q of the filter with cascaded stages, the relationship between the noise rejection of the positive feedback (PFB) oscillator constructed with an identical bandpass gain stages and the cascading effect of Qs have been investigated. Good phase noise performance of around -102 dBc/Hz@ 1 MHz has been measured from a 4-stage 10 GHz PFB ring LC oscillator fabricated in CMOS process, where only low Q passive components are possible to be integrated.
Keywords
Q-factor; UHF oscillators; cascade networks; feedback oscillators; 1 MHz; 10 GHz; CMOS process; bandpass gain stages; cascading effect; low Q passive components; noise rejection; positive feedback oscillator; quality factor; ring LC oscillators; Band pass filters; Bandwidth; Energy storage; Feedback; Frequency; Q factor; RLC circuits; Resonance; Ring oscillators; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Electron Devices for Microwave and Optoelectronic Applications, 2004. EDMO 2004. 12th International Symposium on
Print_ISBN
0-7803-8574-8
Type
conf
DOI
10.1109/EDMO.2004.1412397
Filename
1412397
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