A 23-to-29GHz Differentially Tuned Varactorless VCO in 0.13μm CMOS

A differentially tuned varactorless VCO is implemented in a 0.13μm CMOS process. The frequency is continuously tunable from 23.2 to 29.4GHz (23.6% range differential and 3.3% range for common-mode tuning) using a single-ended (1.5V max) tuning voltage. Measured phase noise at 26.6GHz is -96.2dBc/Hz...

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Bibliographic Details
Main Authors: Kwok, KaChun, Long, John R., Pekarik, John J.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Circuit optimization
CMOS technology
Frequency
Inductors
Parasitic capacitance
Radar applications
Tuning
Voltage
Voltage-controlled oscillators
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Description
Summary:A differentially tuned varactorless VCO is implemented in a 0.13μm CMOS process. The frequency is continuously tunable from 23.2 to 29.4GHz (23.6% range differential and 3.3% range for common-mode tuning) using a single-ended (1.5V max) tuning voltage. Measured phase noise at 26.6GHz is -96.2dBc/Hz (3MHz offset) and the open-drain output buffer delivers -11dBm (single-ended) to a 50Ω load. The 0.3 × 0.4mm 2 core consumes 43mW (6.5mW in the output buffer) from a 1.2V supply.
ISSN:0193-6530
2376-8606
DOI:10.1109/ISSCC.2007.373360