Dual-band low-phase-noise LC-QVCO using series coupling and switched biasing techniques

Autor:	Jin Hong Park, Ki Won Kim, Ho Jun Chang, Tae-Yeoul Yun
Rok vydání:	2012
Předmět:	Materials science Offset (computer science) Transistor Reconfigurability dBc Biasing Surfaces Coatings and Films law.invention Hardware and Architecture law Signal Processing Phase noise Electronic engineering Multi-band device UMTS frequency bands
Zdroj:	Analog Integrated Circuits and Signal Processing. 73:955-960
ISSN:	1573-1979 0925-1030
Popis:	An LC-tank quadrature voltage-controlled oscillator (QVCO) is proposed to achieve frequency-band reconfigurability and low phase noise. In this work, phase noise contributed by the 1/f noise of coupling transistors and tail transistors is noticeably reduced when series coupling and switched biasing techniques are simultaneously adopted. The proposed QVCO was implemented in 0.25-μm triple-well CMOS process for K-PCS and WCDMA bands. Measured results showed a phase noise of −117 dBc/Hz at an offset of 1 MHz and a phase-noise figure-of-merit of −172 dBc/Hz while consuming 8.13 mA from a 2-V power supply.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::306288c0c064d71742bb02d7c3d12340 https://doi.org/10.1007/s10470-012-9903-y Zobrazit plný text záznamu Full text from SpringerLink