Low Phase Noise Load Independent Switched LC VCO
Resource
2010 IEEE MTT-S International Microwave Symposium Digest (MTT), 280-283
Journal
2010 IEEE MTT-S International Microwave Symposium
Pages
1
Date Issued
2010
Date
2010
Author(s)
Liu, Peng
Upadhyaya, Parag
Jung, Jaeyoung
Luo, Tang-Nian
Chen, Vi-Jan
Heo, Deukhyoun
Abstract
This paper presents a novel low-voltage low phase noise CMOS complementary LC Voltage Controlled Oscillator(VCO) implemented in the TSMC 0.18um CMOS process. By using capacitive feedback, dynamic switching is achieved for the current source. Detailed theoretical analysis is conducted to show, besides load independence, how tail current switching helps reduce supply voltage and improve phase noise performance by reducing drain current duty cycle for less noise up-conversion and reducing 1/f noise without adding switching bias circuits. For the proposed VCO, with 1.2V supply voltage and 2.5mA DC current consumption, phase noise of −121.3dBc/Hz at 1MHz offset from 5.4GHz oscillation frequency is achieved, and the measured FOM is −191.1dBc/Hz.
SDGs
Type
conference paper
File(s)![Thumbnail Image]()
Loading...
Name
04.pdf
Size
23.21 KB
Format
Adobe PDF
Checksum
(MD5):4a6b3617f61d8b8319b99beedb915cab