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Dual‐band VCO with composite right‐/left‐handed resonator
Author(s) -
Jang ShengLyang,
Liu YouWei,
Chang ChiaWei,
Hsue ChingWen
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27375
Subject(s) - voltage controlled oscillator , multi band device , resonator , electrical engineering , cmos , microwave , voltage , optoelectronics , electronic engineering , materials science , engineering , telecommunications , antenna (radio)
This article proposes a high‐performance CMOS voltage‐controlled oscillator (VCO) implemented with composite right‐/left‐handed nonmobius‐connected LC‐rings to provide dual‐band differential outputs.The VCO consists of two cross‐coupled sub‐VCOs sharing series‐LC resonators. nMOSFET switches are used to control high‐ and low‐band outputs. The proposed VCO has been implemented with the TSMC 0.18 μm SiGe BiCMOS technology. The die area of the VCO is 1.16 × 1.12 mm 2 . With the switch on, the odd‐mode VCO operates at the high‐frequency 6 GHz band, and when the switch is off, the even‐mode VCO operates at the low‐frequency 4 GHz band. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:468–471, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27375