RF CMOS LC-Oscillator With Source Damping Resistors

RF CMOS LC-Oscillator With Source Damping Resistors

This letter proposes a new method to suppress the 1/f noise contribution of active devices in an oscillator using source damping resistors. The operational mechanism of the proposed source damping resistor method is analyzed through circuit simulation with a complementary LC-oscillator. The reduced...

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Veröffentlicht in:IEEE microwave and wireless components letters 2006-09, Vol.16 (9), p.511-513
Hauptverfasser: YUN, Seok-Ju, CHA, Chong-Yul, CHOI, Hyoung-Chul, LEE, Sang-Gug
Format: Artikel
Sprache:eng
Schlagworte:
Active noise reduction
Applied sciences
Circuit analysis
Circuit noise
Circuit properties
Circuit simulation
Complementary metal oxide semiconductor (CMOS)
Damping
damping resistors
Design. Technologies. Operation analysis. Testing
Electric, optical and optoelectronic circuits
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Integrated circuits
Noise reduction
Oscillators
Oscillators, resonators, synthetizers
Phase noise
Radio frequency
Resistors
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Theoretical study. Circuits analysis and design
voltage controlled oscillator (VCO)
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Beschreibung
Zusammenfassung:This letter proposes a new method to suppress the 1/f noise contribution of active devices in an oscillator using source damping resistors. The operational mechanism of the proposed source damping resistor method is analyzed through circuit simulation with a complementary LC-oscillator. The reduced 1/f noise leads to the phase noise improvement by suppressing 1/f noise up-conversion to phase noise. The measurement result shows that there is about 6.0dBc and 4.0dBc of phase noise improvement at 10kHz and 100kHz offset frequency with differential complementary LC-oscillator topology, respectively
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2006.880700