Proceedings ArticleDOI
A fully differential CMOS integrated 4th order reconfigurable GM-C lowpass filter for mobile communication
U. Stehr,F. Henkel,L. Dalluge,P. Waldow +3 more
- Vol. 1, pp 144-147
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TLDR
A fully reconfigurable channel select filter is presented which is used as a part of a multi mode direct conversion receiver which supports different modes including GSM, IS-95, and UMTS.Abstract:
A fully reconfigurable channel select filter is presented which is used as a part of a multi mode direct conversion receiver. The filter supports different modes including GSM, IS-95, and UMTS. A 4/sup th/ order Butterworth filter is realized in a g/sub n/ C filter topology. The filter circuit is implemented in a standard 0.35 /spl mu/m CMOS process. The filter is able to handle large input signals up to 600mVpp at a supply voltage of 2.7V. The circuit has a low current consumption of 620/spl mu/A, whereas the needed die size is only 530520/spl mu/m.read more
Citations
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Proceedings ArticleDOI
Application of the PSO technique to the Optimization of CMOS Operational Transconductance Amplifiers
TL;DR: This paper optimize the folded cascode OTA performances, namely the static gain, the transition frequency, the common mode rejection ratio (CMRR), and the positive power-supply reject ratio (PSRR).
Proceedings ArticleDOI
UMTS/GSM multi mode receiver design
TL;DR: The work presented here focuses mainly on the receiver design, but in case of UMTS-FDD it also takes the interference from the transmitter into account and the boundary conditions for the transceiver IC are defined using specifications of currently available external components.
Proceedings ArticleDOI
A linearity and power efficient design strategy for architecture optimization of gm-C biquadratic filters
TL;DR: In this article, an efficient approach to design biquadratic sections for a low-pass baseband filter based on the gm-C architecture is presented, which completely determines the biquad's architecture level for linearity and power optimization.
Journal ArticleDOI
Fully-differential current-mode higher order filters using all grounded passive elements
TL;DR: The realization of nth order fully-differential current-mode filters using Current Differencing Current Conveyors (CDCC) has been presented which results in circuits employing all grounded passive elements and employs only one capacitor per pole.
References
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Book
CMOS Circuit Design, Layout, and Simulation
TL;DR: Regardless of one's integrated circuit (IC) design skill level, this book allows readers to experience both the theory behind, and the hands-on implementation of, complementary metal oxide semiconductor (CMOS) IC design via detailed derivations, discussions, and hundreds of design, layout, and simulation examples.
Journal ArticleDOI
Active filter design using operational transconductance amplifiers: A tutorial
TL;DR: In this paper, the operational transconductance amplifier (OTA) is used in voltage-controlled amplifiers, filters, and impedances for continuous-time monolithic filters, where the total number of components used in these circuits is small, and the design equations and voltage-control characteristics are attractive.
Journal ArticleDOI
A 2-GHz wide-band direct conversion receiver for WCDMA applications
TL;DR: In this paper, a 2GHz direct conversion receiver for third-generation mobile communications using wideband code division multiple access achieves -114dBm sensitivity for 128-kb/s data at 4.096-Mcps spreading rate.
Journal ArticleDOI
A CMOS highly linear channel-select filter for 3G multistandard integrated wireless receivers
TL;DR: In this article, a 6-order Butterworth low-pass filter with 14-bit bandwidth tuning range is designed for implementing the baseband channel-select filter in an integrated multistandard wireless receiver.
Journal Article
State of the art and future trends
Erwin Schwab,Ralf Marzineak +1 more
TL;DR: Machine Maintenance 2003 as discussed by the authors is a forward-looking, preventive maintenance program ensuring high machine availability at all times with a minimum risk of breakdown and regularity and transparency of the maintenance programme safeguard investment and secure a presence on the market.
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