A 0.75 to 2.2GHz continuously-tunable quadrature VCO

A 0.75 to 2.2GHz continuously-tunable quadrature VCO

The /spl plusmn/20% tuning range of a fully integrated quadrature LC-VCO is extended to /spl plusmn/50%. The quadrature VCO is inserted in a loop with an SSB mixer and two frequency dividers that add 100/spl times/100 /spl mu/m/sup 2/ area in a 0.13 /spl mu/m CMOS process and draw 10mA from a 1.2V s...

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Bibliographic Details
Published in:ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005 pp. 536 - 615 Vol. 1
Main Authors: Guermandi, D., Tortori, P., Franchi, E., Gnudi, A.
Format: Conference Proceeding
Language:English
Published: IEEE 2005
Subjects:
Bluetooth
Contracts
Current measurement
Current supplies
GSM
Local oscillators
Phase noise
Radiofrequency integrated circuits
Transceivers
Voltage-controlled oscillators
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Description
Summary:The /spl plusmn/20% tuning range of a fully integrated quadrature LC-VCO is extended to /spl plusmn/50%. The quadrature VCO is inserted in a loop with an SSB mixer and two frequency dividers that add 100/spl times/100 /spl mu/m/sup 2/ area in a 0.13 /spl mu/m CMOS process and draw 10mA from a 1.2V supply. Quadrature error is <2/spl deg/ and phase noise <-120dBc/Hz at 1 MHz offset.
ISBN:0780389042
9780780389045
ISSN:0193-6530
2376-8606
DOI:10.1109/ISSCC.2005.1494106