Research
areas
Research
projects
Recent
publications
Research areas

Continuoustime analog integrated filters

RFIC design for telecommunications
applications

Spiral inductor on
silicon substrate modeling

MOS transistor models for analog simulation

Fuzzy logic analog processing

Highly linear resistors using novel sixterminal MOS devices
Research projects
The group participates in european and national research
projects:

TIGRA, Transmitter Intergration of Next Generation TETRA Systems for PMR and Public Safety Applications in a CMOSbased SiGe Technology,
IST Project no. 10178, cooperation with Austria Mikro Systeme
and Securicor Wireless Technologies

IMODE, Low Power
RF to Baseband Interface for Multimode Portable Phones, ESPRIT IV, Project
no. 25702.

OCMP, Onechip Low Power Transceiver for Multimode
Portable Phones, ESPRIT IV, Project no. 24123. Cooperation with ST Microelectronics.

Development project funded by the Greek Ministry of Education.
Formation and development of the educational and research electronics laboratory
at the NTUA.

Hellenic VLSI  DPE, ESPRIT II, Project no. 5692.
Design and development of microelectronic circuits for industrial applications
in Greece.

Hellenic VLSI  DPE, STRIDE, Design and development
of microelectronic circuits for industrial applications in Greece. (Continuation
of ESPRIT Project no. 5692).

MInOSS, Microintegrated Intelligent Optical Sensor
System, ESPRIT III, Project no. 7101. Integrated analog electronics for
optical sensing devices.
 s
ALCD, Analog Libraries on LowCost CMOS Digital
Process, ESPRIT III, Project no. 8030. Development of analog microelectronic
circuits in digital CMOS processes.

PENED, "VLSI implementation of a fuzzy logic microprocessor",
Greek Ministry of Research and Technology, Project no. 91ÅÄ/122.

TIBIA, Technology Initiative in BiCMOS for Applications,
ESPRIT III, Project no. 8001. RF IC design project  cooperation with Siemens
Semiconductors, Munich, Germany.

EPET II, Development of industrial microelectronic
products", Greek Ministry of Research and Technology, Project no. 476.
Design and development of a modem system for subSDH applications.

TIBIA II, "Technology Initiative in BiCMOS for Applications,
ESPRIT IV, Project no. 20485. RF IC design project  cooperation with Siemens
Semiconductors, Munich, Germany.

VLSInet  Network for dissemination of the VLSI
design knowhow.
Recent publications
2008
 M. Bucher, A. Bazigos, "An efficient channel segmentation approach for a largesignal NQS MOSFET model
SolidState Electronics," SolidState Electronics, vol. 52, issue 2, pp. 275281, feb. 2008.
 M. Bucher, A. Bazigos, S. Yoshitomi, N. Itoh, "A Scalable Advanced RF IC DesignOriented MOSFET Model," International Journal of RF and Microwave Computer Aided Engineering, (to be published).
2007
 G. Theodoratos, Y. Papananos, and G. Vitzilaios, "A lowvoltage 5GHz downconversion mixer employing a second harmonic injection linearization technique," IEEE Trans. Circuits Syst. II, vol. 54, pp. 964968, Nov. 2007.
 K. S. Vryssas and A. Samelis, "Behavioral modeling of power amplifiers for wireless applications," International Journal of RF and Microwave ComputerAided Engineering, vol. 17, pp. 480492, Sep. 2007.
 S. Yoshitomi, A. Bazigos, and M. Bucher, "EKV3 parameter extraction and characterization of 90nm RFCMOS technology," in Proc. 2007 IEEE International Conference on Mixed Design of Integrated Circuits and Systems, June 2007, pp. 7479.
 M. Bucher, A. Bazigos, and W. Grabinski, "Determining MOSFET parameters in moderate inversion," in Proc. 2007 IEEE Design and Diagnostics of Electronic Circuits and Systems, Apr. 2007, pp. 14.
2006
 G. Vitzilaios, Y. Papananos, G. Theodoratos, and K. S. Vryssas, "Magneticfeedbackbased predistortion method for lownoise amplifier linearization," IEEE Trans. Circuits Syst. II, vol. 53, pp. 14411445, Dec. 2006.
 G. Vitzilaios, Y. Papananos, G. Theodoratos, and A. Vasilopoulos, "A 1V, 5.5GHz, CMOS LNA with multiple magnetic feedback," IEEE Trans. Circuits Syst. II, vol. 53, pp. 971975, Sep. 2006.
 A. Vasilopoulos, G. Vitzilaios, G. Theodoratos, and Y. Papananos, "A lowpower wideband reconfigurable integrated activeRC filter with 73 dB SFDR," IEEE J. SolidState Circuits, vol. 41, pp. 19972008, Sep. 2006.
 N. Nastos and Y. Papananos, "RF operation of MOSFETs under integrated inductors," IEEE Trans. Microwave Theory Tech., vol. 54, pp. 21062117, May 2006.
 E. Kitonaki, A. Bazigos, M. Bucher, H. Puchner, S. Bhardwaj, and Y. Papananos, "Scaling issues in an 0.15ï¿½m CMOS technology with EKV3.0," in Proc. 2006 IEEE International Conference on Mixed Design of Integrated Circuits and System, June 2006, pp. 151158.
 A. Vasilopoulos, Y. Papananos, A. Bazigos, and N. Nastos, "A userfriendly benchmark tool for MOS models," in Proc. 2006 IEEE International Conference on Mixed Design of Integrated Circuits and System, June 2006, pp. 147150.
 G. Vitzilaios, Y. Papananos, G. Theodoratos, and A. Vasilopoulos, "A lowvoltage CMOS LNA with multiple magnetic feedback for WLAN applications," in Proc. 2006 IEEE International Symposium on Circuits and Systems, May 2006, pp. 45034506.
 G. Theodoratos, A. Vasilopoulos, G. Vitzilaios, and Y. Papananos, "Calculating distortion in active CMOS mixers using Volterra series," in Proc. 2006 IEEE International Symposium on Circuits and Systems, May 2006, pp. 22492252.
2005
 N. Naskas and Y. Papananos, "Noniterative adaptive baseband predistorter for RF power amplifier linearization," Proc. IEE Microwaves, Antennas and Propagation, vol. 152, pp. 103110, Apr. 2005.
 S. Pipilos, Y. Papananos, N. Naskas, M. Zervakis, J. Jongsma, T. Gschier, N. Wilson, J. Gibbins, B. Carter, and G. Dann, "A transmitter IC for TETRA systems based on a Cartesian feedback loop linearization technique," IEEE J. SolidState Circuits, vol. 40, pp. 707718, Mar. 2005.
 K. Vryssas and A. Samelis, "Behavioral modeling of nonlinear radiofrequency power amplifiers," in Proc. 2005 AsiaPacific Microwave Conference, Dec. 2005, vol. 1.
 A. Vasilopoulos, G. Vitzilaios, G. Theodoratos, and Y. Papananos, "A lowvoltage, highly linear, integrated, activeRC filter," in Proc. 2005 IEEE Ph.D. Research in Microelectronics and Electronics Conference, July 2005, vol. 1, pp. 3942.
2004
 N. Naskas and Y. Papananos, "A convergencefree predistortion technique for adaptive linearisation of RF power amplifiers," Springer Journal of Analog Integrated Circuits and Signal Processing, vol. 41, pp. 109118, Dec. 2004.
 N. Naskas and Y. Papananos, "Neuralnetworkbased adaptive baseband predistortion method for RF power amplifiers," IEEE Trans. Circuits Syst. II, vol. 51, pp. 619623, Nov. 2004.
 E. Zervakis, Y. Papananos, D. Loukas, N. Haralabidis, and A. Pavlidis, "A highcountingrate readout system for Xray applications," IEEE Trans. Nucl. Sci., vol. 51, pp. 18401847, Aug. 2004.
 M. Bucher, A. Bazigos, N. Nastos, Y. Papananos, F. Krummenacher, and S. Yoshitomi, "Analysis of harmonic distortion in deep submicron CMOS," in Proc. 2004 IEEE International Conference on Electronics, Circuits and Systems, Dec. 2004, pp. 395398.
 Y. Papananos and N. Nastos, "Inductor over MOSFET: Operation and theoretical study of a CMOS RF threedimensional structure," in Proc. 2004 International Conference on Microelectronics, May 2004, vol. 2, pp. 525529.
2003
 E. Zervakis, Y. Papananos, D. Loukas, N. Haralabidis, and A. Pavlidis, "Development of a high count rate readout system based on a fast, linear transimpedance amplifier for xray imaging," in 2003 IEEE Nuclear Science Symposium Conference Record, Oct. 2003, vol. 2, pp. 12751279.
 E. Zervakis, D. Loukas, N. Haralabidis, and A. Pavlidis, "Prototype implementation of a CMOS current mode readout ASIC for Xray imaging applications," in Proc. 2003 IEEE International Conference on Electronics, Circuits and Systems, Dec. 2003, vol. 2, pp. 910913.
 E. Zervakis, D. Loukas, N. Haralabidis, and A. Pavlidis, "A low noisehigh counting rate readout system for Xray imaging applications," in Proc. 2003 International Symposium on Signals, Circuits and Systems, July 2003, vol. 2, pp. 361364.
 N. Naskas and Y. Papananos, "A new noniterative, adaptive baseband predistortion method for high power RF amplifiers," in Proc. 2003 IEEE International Symposium on Circuits and Systems, May 2003, vol. 1, pp. 413416.
 E. Zervakis, D. Loukas, N. Haralabidis, and A. Pavlidis, "Development of a CMOS lownoise analog frontend ASIC for Xray imaging applications," in Proc. 2003 IEEE International Symposium on Circuits and Systems, May 2003, vol. 4, pp. 764767.
 N. Nastos and Y. Papananos, "Integrated inductors over MOSFETs  experimental results of a three dimensional integrated structure," in Proc. 2003 IEEE International Symposium on Circuits and Systems, May 2003, vol. 1, pp. 5760.
 N. Naskas and Y. Papananos, "An adaptive power amplifier lineariser based on a multilayer perceptron," in Proc. 2003 IEEE Semiannual Vehicular Technology Conference, Apr. 2003, vol. 2, pp. 13311334.
2002
 M. Bucher, D. Kazazis, F. Krummenacher, D. Binkley, D. Foty, and Y. Papananos, "Analysis of transconductances at all levels of inversion in deep submicron CMOS," in Proc. 2002 IEEE International Conference on Electronics, Circuits and Systems, Sep. 2002, vol. 3, pp. 11831186.
 N. Naskas and Y. Papananos, "Adaptive baseband predistorter for radio frequency power amplifiers based on a multilayer perceptron," in Proc. 2002 IEEE International Conference on Electronics, Circuits and Systems, Sep. 2002, vol. 3, pp. 11071110.
 N. Nastos and Y. Papananos, "High frequency operation of a MOSFET under an integrated inductor's magnetic field," in Proc. 2002 IEEE International Conference on Electronics, Circuits and Systems, Sep. 2002, vol. 2, pp. 615618.
 E. Zervakis and N. Haralabidis, "A fast 0.25um CMOS currentmode frontend stage for solid state detector interfaces," in Proc. 2002 IEEE International Conference on Electronics, Circuits and Systems, Sep. 2002, vol. 1, pp. 243246.
 N. Naskas and Y. Papananos, "Baseband predistorter for radio frequency power amplifiers based on a noniterative, fast adaptation method," in Proc. 2002 IEEE International Conference on Electronics, Circuits and Systems, Sep. 2002, vol. 1, pp. 117120.
2001
 N. Nastos and Y. Papananos, "A CAD tool for benchmarking MOSFET models," in Proc. 2001 IEEE International Symposium on Circuits and Systems, May 2001, vol. 5, pp. 475478.
2000
 Y. K. Koutsoyannopoulos and Y. Papananos, "Systematic analysis and modeling of integrated inductors and transformers in RF IC design," IEEE Trans. Circuits Syst. II, vol. 47, pp. 699713, Aug. 2000.
 A. Kyranas and Y. Papananos, "A 5 GHz fully integrated VCO in a SiGe bipolar technology," in Proc. 2000 IEEE International Symposium on Circuits and Systems, May 2000, vol. 5, pp. 193196.
 T. Georgantas, S. Bouras, Y. Papananos, and D. Dervenis, "Switchedcurrent ï¿½ï¿½ modulator for baseband channel applications," in Proc. 2000 IEEE International Symposium on Circuits and Systems, May 2000, vol. 4, pp. 413416.
 Y. Koutsoyannopoulos, Y. Papananos, S. Bantas, and C. Alemanni, "Performance limits of planar and multilayer integrated inductors," in Proc. 2000 IEEE International Symposium on Circuits and Systems, May 2000, vol. 2, pp. 160163.
 A. Kyranas and Y. Papananos, "Design issues of fully integrated RF VCOs," in Proc. 2000 Microelectronics Microsystems Nanotechnology.
 N. Nastos and Y. Papananos, "MOSFET model benchmarking using a novel CAD tool", in Proc. 2000 Microelectronics Microsystems Nanotechnology.
 N. Naskas and Y. Papananos, "Power amplifier linearization techniques: An overview," in Proc. 2000 Microelectronics Microsystems Nanotechnology, pp. 321324.
1999
 S. Bouras, T. Georgantas, Y. Papananos, and D. Dervenis, "Current mode baseband interface for communication applications," in Proc. 1999 IEEE International Conference on Electronics, Circuits and Systems, Sep. 1999, vol. 1, pp. 533536.
 T. Georgantas, S. Bouras, D. Dervenis, and Y. Papananos, "A comparison between integrated current and voltage mode filters for baseband applications," in Proc. 1999 IEEE International Conference on Electronics, Circuits and Systems, Sep. 1999, vol. 1, pp. 485488.
 S. Bantas, Y. Papananos, and Y. Koutsoyannopoulos, "CMOS tunable bandpass RF filters utilizing coupled onchip inductors," in Proc. 1999 IEEE International Symposium on Circuits and Systems, May 1999, vol. 2, pp. 581584.
 Y. Koutsoyannopoulos, Y. Papananos, S. Bantas, and C. Alemanni, "Novel Si integrated inductor and transformer structures for RF IC design," in Proc. 1999 IEEE International Symposium on Circuits and Systems, May 1999, vol. 2, pp. 573576.
1998
 S. Bouras, M. Kotronakis, K. Suyama, and Y. Tsividis, "Mixed analogdigital fuzzy logic controller with continuousamplitude fuzzy inferences and defuzzification," IEEE Trans. Fuzzy Syst., vol. 6, pp. 205215, May 1998.
 Y. Koutsoyannopoulos and Y. Papananos, "Efficient utilization of onchip inductors in silicon RF IC design using a novel CAD tool; the LNA paradigm," in Proc. 1998 IEEE International Symposium on Circuits and Systems, June 1998, vol. 6, pp. 118121.
 A. Kyranas and Y. Papananos, "Design issues towards the integration of passive components in silicon RF VCOs," in Proc. 1998 IEEE International Symposium on Circuits and Systems, June 1998, vol. 2, pp. 311314.
1997
 Y. Papananos, T. Georgantas, and Y. Tsividis, "Design considerations and implementation of very low frequency continuoustime CMOS monolithic filters," Proc. IEE Circuits, Devices and Systems, vol. 144, pp. 6874, Apr. 1997.
 S. Bouras and Y. Tsividis, "Centerofgravity defuzzification without multiplication," IEICE Transactions on Fundamental of Electronics, Communications and Computer Sciences, vol. E80, pp. 769770, Apr. 1997.
 K. Vavelidis, Y. P. Tsividis, F. O. Eynde, and Y. Papananos, "Sixterminal MOSFET's: modeling and applications in highly linear, electronically tunable resistors," IEEE J. SolidState Circuits, vol. 32, pp. 412, Jan. 1997.
 Y. Koutsoyannopoulos, Y. Papananos, C. Alemanni, and S. Bantas, "A generic CAD model for arbitrarily shaped and multilayer integrated inductors on silicon substrates," in Proc. 1997 IEEE European SolidState Circuits Conference, Sep. 1997, pp. 320323.
 S. Bantas and Y. Papananos, "A uWpower continuoustime currentmode filter in a digital CMOS process," in Proc. 1997 IEEE International Conference on VLSI and CAD, pp. 346348.
 Y. Koutsoyannopoulos and Y. Papananos, "A CAD tool for simulating the performance of polygonal and multilayer integrated inductors on silicon substrates," IEEE in Proc. 1997 IEEE International Conference on VLSI and CAD, pp. 244246.
1996
 S. Pipilos, Y. P. Tsividis, J. Fenk, and Y. Papananos, "A Si 1.8 GHz RLC filter with tunable center frequency and quality factor," IEEE J. SolidState Circuits, vol. 31, pp. 15171525, Oct. 1996.
 Y. Papananos and Y. Tsividis, "Design and implementation of a CMOS operational amplifier architecture with dual commonmode feedback loop," in Proc. 1996 IEEE International Conference on Electronics, Circuits and Systems, Oct. 1996, vol. 2, pp. 904907.
 C. Dupuy, J. E. Franca, C. Azeredo Leme, F. Maloberti, R. Rivoir, G. Torelli, and Y. Papananos, "ALCDanalog libraries on CMOS digital process," in Proc. 1996 IEEE International Conference on Electronics, Circuits and Systems, Oct. 1996, vol. 1, pp. 618622.
 Y. Papananos, T. Georgantas, and Y. Tsividis, "Design considerations and implementation of very low frequency continuoustime CMOS monolithic filters", in Proc. 1996 IEEE International Conference on Electronics, Circuits and Systems, Oct. 1996, vol. 1, pp. 223226.
 S. Bouras, K. Suyama, and Y. Tsividis, "Integrated fuzzy logic controller with continuous processing," in Proc. 1996 IEEE International Conference on Fuzzy Systems, Sep. 1996, vol. 3, pp. 19511957.
 S. Pipilos, Y. Tsividis, and J. Fenk, "1.8 GHz tunable filter in Si technology," in Proc. 1996 IEEE Custom Integrated Circuits Conference, May 1996, pp. 189192.
1995
 Y. Tsividis, K. Suyama, and K. Vavelidis, "Simple `reconciliation' MOSFET model valid in all regions," IEE Electronics Letters, vol. 31, pp. 506508, Mar. 1995.
1994
 Y. Tsividis and Y. Papananos, "Continuoustime filters using buffers with gain lower than unity," IEE Electronics Letters, vol. 30, pp. 629630, Apr. 1994.
 S. Pipilos and Y. Tsividis, "RLC active filters with electronically tunable centre frequency and quality factor," IEE Electronics Letters, vol. 30, pp. 472474, Mar. 1994.
 S. Pipilos and Y. Tsividis, "Design of active RLC integrated filters with application in the GHz range," in Proc. 1994 IEEE International Symposium on Circuits and Systems, May 1994, vol. 5, pp. 645648.
1993
 K. Vavelidis and Y. Tsividis, "RMOSFET structure based on current division," IEE Electronics Letters, vol. 29, pp. 732733, Apr. 1993.
 Y. Tsividis and K. Vavelidis, "Comment on `Linear, electronically tunable resistor'," IEE Electronics Letters, vol. 29, pp. 556557, Mar. 1993.
 T. Georgantas, Y. Papananos, and Y. Tsividis, "A comparative study of five integrator structures for monolithic continuoustime filters: A tutorial," in Proc. 1993 IEEE International Symposium on Circuits and Systems, May 1993, vol. 2, pp. 12591262.
 K. Vavelidis and Y. Tsividis, "Design considerations for a highly linear electronically tunable resistor," in Proc. 1993 IEEE International Symposium on Circuits and Systems, May 1993, vol. 2, pp. 11801183.
1992
 Y. Tsividis and K. Vavelidis, "Linear, electronically tunable resistor," IEE Electronics Letters, vol. 28, pp. 23032305, Dec. 1992.
1991
 Y. Papananos and D. Anastassiou, "Analysis and VLSI architecture of a nonlinear edgepreserving noisesmoothing image filter," Proc. IEE Circuits, Devices and Systems G, vol. 28, pp. 433440, Aug. 1991.