NDLI: A 900 MHz front-end design with copper passive components

Content Provider	IEEE Xplore Digital Library
Author	Jonghae Kim Koeppe, J. Ming-ta Hsieh Harjani, R.
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA (Jonghae Kim)
Abstract	In this paper, we evaluate the impact of copper (Cu) passive components on RF circuit performance. A fully-differential RF Front-end is used as a test vehicle to compare the Cu 0.18 /spl mu/ copper process with a traditional 0.25 /spl mu/ aluminium (Al) process. The RF Front-end contains a balun and a low noise amplifier (LNA) that are designed with spiral inductors and capacitors. CMOS spiral inductor Q values range from 3 to 5 for the aluminium process and are improved with 7 to 9 for the Cu process, while the fringe capacitor Q values for the Cu process are more than twice the Q values for the Al process. At the system level, the balun performance is characterized by its insertion loss and the LNA performance is defined by its gain and noise figure. The balun insertion losses are 0.6 dB to 0.8 dB lower for the Cu process as compared to a traditional Al process. The LNA gain is 3 dB higher for the Cu process and has a sharper bandpass characteristic. The output signals from the LNA are downconverted by a Gibert cell mixer and amplified by an IF stage. The entire system has been simulated and results from measurements are included to validate our simulation result.
Starting Page	790
Ending Page	793
File Size	526438
Page Count	4
File Format	PDF
ISBN	0780364759
DOI	10.1109/MWSCAS.2000.952874
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-08-08
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Copper Radio frequency Impedance matching Aluminum Spirals Inductors Capacitors Performance loss Insertion loss Circuit optimization
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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