News Column

New Microwave Research Findings from University of California Described

June 17, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators publish new report on Microwave Research. According to news originating from Riverside, California, by VerticalNews correspondents, research stated, "This paper reports the first LC voltage-controlled oscillator (LC-VCO) in CMOS utilizing a novel nontraditional compact inductor with integrated vertical nano particles magnetic core (Ni-Zn-Cu) to improve the figure-of-merit (FOM) of the VCO circuit. The new magnetic-enhanced inductor, fabricated in an integrated-circuit back-end using a CMOS-compatible process, improves inductance density (L-density) and quality factor (Q-factor) up to 7 GHz."

Our news journalists obtained a quote from the research from the University of California, "A 1.36-1.86-GHz VCO with a nano-ferrite-integrated inductor was fabricated in a 180-nm RF CMOS. Measurements show that the magnetic-cored inductor improves the L-density and Q-factor by 49.8% and 59.2% at 1.8 GHz, respectively, while reducing the size by 26%. The VCO achieves reduced power consumption of 2.7 mW at a 1.8-V supply, low phase noise of less than -121, and -126 dBc/Hz at 100-kHz and 1-MHz frequencies offset, and a high FOM of 202 dBc/Hz."

According to the news editors, the research concluded: "This prototype VCO demonstrates that the new vertical-nano-magnetic-cored inductor technology is a potential solution to high-performance low-cost compact RF systems-on-chip."

For more information on this research see: A 2.7-mW 1.36-1.86-GHz LC-VCO With a FOM of 202 dBc/Hz Enabled by a 26%-Size-Reduced Nano-Particle-Magnetic-Enhanced Inductor. IEEE Transactions on Microwave Theory and Techniques, 2014;62(5):1221-1228. IEEE Transactions on Microwave Theory and Techniques can be contacted at: Ieee-Inst Electrical Electronics Engineers Inc, 445 Hoes Lane, Piscataway, NJ 08855-4141, USA. (Institute of Electrical and Electronics Engineers -; IEEE Transactions on Microwave Theory and Techniques -

The news correspondents report that additional information may be obtained from H.L. Cai, University of California, Dept. of Elect Engn, Riverside, CA 92521, United States. Additional authors for this research include Y. Yang, N. Qi, X. Chen, H. Tian, Z. Song, Y. Xu, C.J. Zhou, J. Zhan, A. Wang, B.Y. Chi and T.L. Ren.

Keywords for this news article include: Riverside, California, United States, Microwave Research, North and Central America

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Source: Journal of Technology

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