2009

• A. Domdey, K.M. Hafkemeyer, D. Schroeder, W.H. Krautschneider
  Reliability analysis of gate dielectrics by applying array test structures and automated test systems
  In Tagungsband "NORCHIP 2009", 2009
  Trondheim, Norway, 16-17 November 2009
  Abstract:
  In this paper, we present an approach to analyse the degradation behaviour of the gate dielectric of thousands of MOS transistors simultaneously. Our approach is based on array test structures and automated test systems. The array test structures with a matrix-like arrangement of the MOS devices under test (DUT) have been designed and fabricated in a 130 nm mixed-mode CMOS process. They permit to stress up to 4k DUTs under same conditions. Several array test structures with different perimeters as well as areas integrated on one chip are available. Low-cost automated test systems allow for gate voltage stress experiments on a large scale with numerous array test structures in parallel. Experimental results are shown.
  BibTeX:
  @inproceedings{Domdey:NORCHIP:2009,
  author = {A. Domdey and K.M. Hafkemeyer and D. Schroeder and W.H. Krautschneider},
  title = {{R}eliability analysis of gate dielectrics by applying array test structures and automated test systems},
  year = {2009},
  month = {11},
  booktitle = {NORCHIP 2009},
  note = {Trondheim, Norway, 16-17 November 2009} }
  [Abstract] [BibTeX]
  
  
• A. Domdey, K. Hafkemeyer and W. Krautschneider
  Reliability Analysis of MOSFET Thin Gate Dielectrics by Applying Test Structures and Automated Test Systems
  In Tagungsband "Proceedings SAFE 2009", 2009
  Veldhoven (The Netherlands)
  Abstract:
  In this paper, we present an approach to analyse the degradation behaviour of the gate dielectric of thousands of MOS transistors simultaneously. Our approach is based on array test structures and automated test systems. The array test structures with a matrix-like arrangement of the MOS devices under test (DUT) have been designed and fabricated in a 130 nm mixed-mode CMOS process. They permit to stress up to 4k DUTs under same conditions. Several array test structures with different perimeters as well as areas integrated on one chip are available. Low-cost automated test systems allow for gate voltage stress experiments on a large scale with numerous array test structures in parallel. Experimental results are shown.
  BibTeX:
  @inproceedings{Domdey:MOSFET:2009,
  author = {A. Domdey and K. Hafkemeyer and W. Krautschneider},
  title = {{R}eliability {A}nalysis of {M}{O}{S}{F}{E}{T} {T}hin {G}ate {D}ielectrics by {A}pplying {T}est {S}tructures and {A}utomated {T}est {S}ystems},
  year = {2009},
  month = {11},
  booktitle = {Proceedings SAFE 2009},
  note = {Veldhoven (The Netherlands)} }
  [Abstract] [BibTeX]
  
  
• F. Wagner, W. Galjan, D. Schröder and W.H. Krautschneider
  Integrated Programmable 2nd Order IIR Digital Filter Cell
  In Tagungsband "ProRISC 2009", 2009
  Veldhoven, The Netherlands
  Abstract:
  In this work, a 2nd order IIR filter structure realized with minimum hardware effort is presented. By reusing the multiplier and the adder, 2nd order filtering is executed in five clock cycles. The filter coefficients are written to five registers, which programs the filter operation to low, high or band pass behavior.Using a 130 nm process, this filter consumes 0.112 nJ per computed 16-bit sample and 0.035 mm2 of silicon area.
  BibTeX:
  @inproceedings{Wagner:Cell:2009,
  author = {F. Wagner and W. Galjan and D. Schr{\"o}der and W.H. Krautschneider},
  title = {{I}ntegrated {P}rogrammable 2nd {O}rder {I}{I}{R} {D}igital {F}ilter {C}ell},
  year = {2009},
  month = {11},
  booktitle = {ProRISC 2009},
  note = {Veldhoven, The Netherlands} }
  [Abstract] [BibTeX]
  
  
• Bryce Bradford, Wolfgang Krautschneider and Arthur Schott
  Blood Pressure Sensing Medical Implant
  In Tagungsband "SAFE 2009", 2009
  Veldhoven (The Netherlands)
  Abstract:
  Abstract—The current method for detecting leakage around the endovascular stent graft following endovascular aneurysm repair (EVAR) is through the evaluation of angiography scan images. In addition to the inconvenience of performing these angiograph scans, plus the risk of misinterpretation of the image data, this method for detecting leakage does not allow for direct, real-time measurements of the intrasac aneurysm pressure levels. By using RFID technology, micromachined pressure sensors, and ultra low power integrated circuitry, a method for taking direct pressure level readings from inside the aneurysm sac is being developed to overcome these shortcomings. This paper will describe the development of a new pressure sensing medical implant which will record and wirelessly transmit real time pressure readings from inside the aneurysm sac. This proof of concept system is evaluated based on its wireless read distance vs. ADC sample rate vs. transmitter antenna size.
  BibTeX:
  @inproceedings{Bradford:Blood:2009,
  author = {Bryce Bradford and Wolfgang Krautschneider and Arthur Schott},
  title = {{B}lood {P}ressure {S}ensing {M}edical {I}mplant},
  year = {2009},
  month = {11},
  booktitle = {SAFE 2009},
  note = {Veldhoven (The Netherlands)} }
  [Abstract] [BibTeX]
  
  
• Kristian M. Hafkemeyer, Andreas Domdey, Dietmar Schroeder, Wolfgang H. Krautschneider
  Integrated Array Test Structure for Gate Oxide Integrity Statistics and Charge Pumping Measurements
  In Tagungsband "SAFE 2009", 2009
  Veldhoven (Netherlands)
  Abstract:
  An array test structure for gate oxide integrity and charge pumping measurements is presented. The test structure has been designed in a 130 nm mixed-mode CMOS technology offering two gate oxide thicknesses. A triple well option has been used for the devices under test (DUT) and the transmission gates to reduce leakage currents and to enable the possibility to measure the bulk currents of single DUTs in charge pumping experiments in correlation to interface states.
  BibTeX:
  @inproceedings{hfkmr:cp:2009,
  author = {Kristian M. Hafkemeyer and Andreas Domdey and Dietmar Schroeder and Wolfgang H. Krautschneider},
  title = {{I}ntegrated {A}rray {T}est {S}tructure for {G}ate {O}xide {I}ntegrity {S}tatistics and {C}harge {P}umping {M}easurements},
  year = {2009},
  month = {11},
  booktitle = {SAFE 2009},
  note = {Veldhoven (Netherlands)} }
  [Abstract] [BibTeX]
  
  
• Nashwa Abo Elneel, Fabian Wagner, Dietmar Schroeder, and Wolfgang H. Krautschneider
  A Compact Wireless Sensor Node for Biomedical Signal Acquisition Realized as a System-in-Package
  In Tagungsband "SOMSED 2009", 2009
  Hamburg, Germany, 8.-9. Oct. 2009
  Abstract:
  The complete circuitry of a wireless sensor node for biomedical signal acquisition has been implemented as a System-in-Package (SiP). The realized node has a compact size of a 2.5x2.5x0.3 cm3 without a battery and antenna. The portable node can be attached to the patient’s body for ECG signal measurement and wireless transmission using the ZigBee protocol, and can be easily integrated and configured into any traditional ZigBee-based WSN.
  BibTeX:
  @inproceedings{na:SOMSED:DIONYSYS:2009,
  author = {Nashwa Abo Elneel and Fabian Wagner and Dietmar Schroeder and and Wolfgang H. Krautschneider},
  title = {{A} {C}ompact {W}ireless {S}ensor {N}ode for {B}iomedical {S}ignal {A}cquisition {R}ealized as a {S}ystem-in-{P}ackage},
  year = {2009},
  month = {10},
  booktitle = {SOMSED 2009},
  note = {Hamburg, Germany, 8.-9. Oct. 2009} }
  [Abstract] [BibTeX]
  
  
• Nashwa Abo Elneel and Dietmar Schroeder
  Hardware-Based Data Compression for Efficient ECG Signal Transmission over a Wireless Sensor Network
  In Tagungsband "SOMSED 2009", 2009
  Hamburg, Germany, 8.-9. Oct. 2009
  Abstract:
  A Wireless Sensor Network (WSN) for remote ECG monitoring and data transmission to a PC has been implemented in a star topology. The first trial system consists of two sensor end-nodes and a base station. The sensor interface circuitry integrates an entropy-coding A/D converter (ECOC) for lossless ECG data compression. The application achieved good performance in terms of compression ratios and average bit rates, i.e. 3.04 bit/Sample at 500Hz sampling rate, resulting in an average RF-packet rate of 7.92 Packets/s per channel. The estimated transmitter power savings from the compression is 75%.
  BibTeX:
  @inproceedings{na:SOMSED:ECOC:2009,
  author = {Nashwa Abo Elneel and Dietmar Schroeder},
  title = {{H}ardware-{B}ased {D}ata {C}ompression for {E}fficient {E}{C}{G} {S}ignal {T}ransmission over a {W}ireless {S}ensor {N}etwork},
  year = {2009},
  month = {10},
  booktitle = {SOMSED 2009},
  note = {Hamburg, Germany, 8.-9. Oct. 2009} }
  [Abstract] [BibTeX]
  
  
• Klaus Dembrowski, Bryce T. Bradford
  Low Power Wireless Sensor Node
  In Tagungsband "SOMSED 2009", 2009
  SOMSED 2009, Hamburg, 8-9. October 2009
  Abstract:
  The paper describes the development of a sensor board with Crossbow’s IRIS wireless sensor mote. The sensor board is used to measure light intensity, temperature, air pressure, and humidity while operating with very low power consumption. The power supply for the complete node includes a small solar panel and a switching regulator to generate power for recharging the IRIS mote’s batteries. The board is evaluated based on its energy consumption while operating at different sampling frequencies in the SOMSED wireless mesh network on TUHH. Furthermore, a Windows application parses the raw data from the sensor nodes into a data log file of structure into the Microsystems department’s server.
  BibTeX:
  @inproceedings{Node:Bradford:2009,
  author = {Klaus Dembrowski and Bryce T. Bradford},
  title = {{L}ow {P}ower {W}ireless {S}ensor {N}ode},
  year = {2009},
  month = {10},
  booktitle = {SOMSED 2009},
  note = {SOMSED 2009, Hamburg, 8-9. October 2009} }
  [Abstract] [BibTeX]
  
  
• Wjatscheslaw Galjan, Kristian M. Hafkemeyer, Jakob M. Tomasik, Fabian Wagner, Wolfgang H. Krautschneider and Dietmar Schroeder
  Highly Sensitive Biomedical Amplifier with CMRR Calibration and DC-Offset Compensation
  In Tagungsband "IEEE Eurocon", 2009, p. 172-175
  Saint Petersburg, Russia, 18.-23. May 2009
  Abstract:
  To cover a wide range of biomedical applications, the presented instrumentational amplifier (INA) for acquisition of biomedical signals is adjustable regarding power consumption and noise. In addition, DC-offsets larger than +-500 mV resulting from electrochemical potentials of the electrodes can be compensated by applying a voltage to an additional input. To achieve a high common mode rejection ratio (CMRR) of more than 80 dB, a digitally controlled calibration circuitry has been integrated. The novel concept of calibrating the CMRR in the high resistive feedback loop of an opamp and the DC electrode potential suppression does not require any external components. The INA has been fabricated in a 350 nm CMOS technology.
  BibTeX:
  @inproceedings{Galjan:BioAmp:2009,
  author = {Wjatscheslaw Galjan and Kristian M. Hafkemeyer and Jakob M. Tomasik and Fabian Wagner and Wolfgang H. Krautschneider and Dietmar Schroeder},
  title = {{H}ighly {S}ensitive {B}iomedical {A}mplifier with {C}{M}{R}{R} {C}alibration and {D}{C}-{O}ffset {C}ompensation},
  year = {2009},
  month = {05},
  booktitle = {IEEE Eurocon},
  note = {Saint Petersburg, Russia, 18.-23. May 2009},
  pages = {172-175} }
  [Abstract] [BibTeX]
  
  
• Frank, Mirko and Kuhl, Matthias and Erdler, Gilbert and Freund, Ingo and Manoli, Yiannos and Muller, Claas and Reinecke, Holger
  An integrated power supply system for low power 3.3 V electronics using on-chip polymer electrolyte membrane (PEM) fuel cells
  Artikel in "IEEE journal of solid-state circuits", vol. 45, Nr. 1, p. 205--213, 2009
  Abstract:
  
  BibTeX:
  @article{frank2009integrated,
  author = {Frank and Mirko and Kuhl and Matthias and Erdler and Gilbert and Freund and Ingo and Manoli and Yiannos and Muller and Claas and Reinecke and Holger},
  title = {{A}n integrated power supply system for low power 3.3 {V} electronics using on-chip polymer electrolyte membrane ({P}{E}{M}) fuel cells},
  year = {2009},
  journal = {IEEE journal of solid-state circuits},
  number = {1},
  pages = {205--213},
  publisher = {IEEE},
  volume = {45} }
  [BibTeX]
  
  
• Kuhl, M and Frank, M and Erdler, G and Freund, I and Müller, C and Reinecke, H and Manoli, Y
  An Integrated Power Supply System for Low-Power 3.3 V Electronics Using On-Chip PEM Fuel Cells
  Artikel in "2009 IEEE International Solid-State Circuits Conference", 2009
  Abstract:
  
  BibTeX:
  @article{kuhlintegrated,
  author = {Kuhl and M and Frank and M and Erdler and G and Freund and I and M{\"u}ller and C and Reinecke and H and Manoli and Y},
  title = {{A}n {I}ntegrated {P}ower {S}upply {S}ystem for {L}ow-{P}ower 3.3 {V} {E}lectronics {U}sing {O}n-{C}hip {P}{E}{M} {F}uel {C}ells},
  year = {2009},
  journal = {2009 IEEE International Solid-State Circuits Conference} }
  [BibTeX]
  
  
• Erdler, G and Uhl, L and Kuhl, M and Manoli, Y and Frank, M and Müller, C and Reinecke, H
  Chipintegrierte PEM-Brennstoffzellenkaskaden als On-Chip Energieversorgung
  Artikel in "MikroSystemTechnik", 2009
  Abstract:
  
  BibTeX:
  @article{erdler2009chipintegrierte,
  author = {Erdler and G and Uhl and L and Kuhl and M and Manoli and Y and Frank and M and M{\"u}ller and C and Reinecke and H},
  title = {{C}hipintegrierte {P}{E}{M}-{B}rennstoffzellenkaskaden als {O}n-{C}hip {E}nergieversorgung},
  year = {2009},
  journal = {MikroSystemTechnik},
  publisher = {VDE VERLAG GmbH} }
  [BibTeX]
  
  
• Kuhl, M and Erdler, G and Frank, M and Uhl, L and Müller, C and Reinecke, H and Manoli, Y
  Integrierte Spannungsregelung und Kontrollsystem für chip-integrierte Brennstoffzellen-Kaskaden
  Artikel in "MikroSystemTechnik", 2009
  Abstract:
  
  BibTeX:
  @article{kuhl2009integrierte,
  author = {Kuhl and M and Erdler and G and Frank and M and Uhl and L and M{\"u}ller and C and Reinecke and H and Manoli and Y},
  title = {{I}ntegrierte {S}pannungsregelung und {K}ontrollsystem f{\"u}r chip-integrierte {B}rennstoffzellen-{K}askaden},
  year = {2009},
  journal = {MikroSystemTechnik},
  publisher = {VDE VERLAG GmbH} }
  [BibTeX]
  
  
• Nashwa Abo Elneel, Fabian Wagner, Dietmar Schroeder, Wolfgang Krautschneider
  Programmable analog channel for System-in-Package biomedical applications
  Artikel in "Activity Report 2008, Europractice IC Service", 2009
  Abstract:
  
  BibTeX:
  @article{Europractice08,
  author = {Nashwa Abo Elneel and Fabian Wagner and Dietmar Schroeder and Wolfgang Krautschneider},
  title = {{P}rogrammable analog channel for {S}ystem-in-{P}ackage biomedical applications},
  year = {2009},
  journal = {Activity Report 2008, Europractice IC Service} }
  [BibTeX]
  
  
• Gieschke, P and Nurcahyo, Y and Herrmann, M and Kuhl, M and Ruther, P and Paul, O
  CMOS integrated stress mapping chips with 32 N-type or P-type piezoresistive field effect transistors
  In Tagungsband "2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems" der IEEE, 2009, p. 769--772
  Abstract:
  
  BibTeX:
  @inproceedings{gieschke2009cmos,
  author = {Gieschke and P and Nurcahyo and Y and Herrmann and M and Kuhl and M and Ruther and P and Paul and O},
  title = {{C}{M}{O}{S} integrated stress mapping chips with 32 {N}-type or {P}-type piezoresistive field effect transistors},
  year = {2009},
  booktitle = {2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems},
  organization = {IEEE},
  pages = {769--772} }
  [BibTeX]
  
  
• H. Balasubramaniam, W. Galjan, W.H. Krautschneider and H. Neubauer
  12-bit Hybrid C2C DAC based SAR ADC with Floating Voltage Shield
  In Tagungsband "IEEE Int. Conf. on Signals, Circuits and Systems", 2009
  Proc. IEEE Int. Conf. on Signals, Circuits and Systems
  Abstract:
  A successive approximation ADC based on the C2C DAC architecture is introduced. The ADC designed in a 0.18μm CMOS 2 Poly 4 Metal process uses a hybrid capacitive DAC combining the best of the binary weighted capacitive array and the C2C array. C2C ladder based architectures are very attractive for implementation because of its small area, high speed and low power consumption. However a major drawback associated with this DAC is the presence of high parasitic bottom plate capacitances. A concept called the floating voltage shield (FVS) is introduced to reduce the effect of these parasitic capacitances and maximize the effective use of the C2C DAC features. The converter consists of the hybrid DAC, a two stage preamplifier followed by a dynamic latch, switch array and digital circuitry for switching and control. The ADC consumes a maximum power of 630μW at a peak conversion rate of approximately 2MS/s from a 1.8V supply voltage and 40MHz clock. Use of extremely simple and yet robust analog architectures for the comparator make the ADC operation less prone to process variation errors.
  BibTeX:
  @inproceedings{Balasubramaniam:12:2009,
  author = {H. Balasubramaniam and W. Galjan and W.H. Krautschneider and H. Neubauer},
  title = {12-bit {H}ybrid {C}2{C} {D}{A}{C} based {S}{A}{R} {A}{D}{C} with {F}loating {V}oltage {S}hield},
  year = {2009},
  booktitle = {IEEE Int. Conf. on Signals, Circuits and Systems},
  note = {Proc. IEEE Int. Conf. on Signals, Circuits and Systems} }
  [Abstract] [BibTeX]
  
  
• Kristian M. Hafkemeyer, Andreas Domdey, Dietmar Schroeder and Wolfgang H. Krautschneider
  Array Test Structure for Ultra-Thin Gate Oxide Degradation Issues
  In Tagungsband "IEEE International Conference on Microelectronic Test Structures", 2009, p. 85-90
  Oxnard, CA, USA
  Abstract:
  An array test structure for highly parallelized measurements of ultra-thin MOS gate oxide failures caused by degradation is presented. The test structure allows for voltage stress tests of several thousand NMOS devices under test (DUTs) in parallel to provide a large and significant statistical base regarding soft as well as hard breakdown and stress induced degradation of transistor parameters. The array has been fabricated in a standard 130 nm CMOS technology. As mixed mode technologies provide both thin and thick oxide MOS transistors, different gate oxide thicknesses have been chosen for DUTs and digital control logic which gives the possibility to stress the DUTs with high gate voltages.
  BibTeX:
  @inproceedings{Hafkemeyer:ICMTS:2009,
  author = {Kristian M. Hafkemeyer and Andreas Domdey and Dietmar Schroeder and Wolfgang H. Krautschneider},
  title = {{A}rray {T}est {S}tructure for {U}ltra-{T}hin {G}ate {O}xide {D}egradation {I}ssues},
  year = {2009},
  booktitle = {IEEE International Conference on Microelectronic Test Structures},
  note = {Oxnard, CA, USA},
  pages = {85-90} }
  [Abstract] [BibTeX]
  
  
• Frank, Mirko and Kuhl, Matthias and Erdler, Gilbert and Freund, Ingo and Manoli, Yiannos and Müller, Claas and Reinecke, Holger
  An integrated power supply system for low-power 3.3 V electronics using on-chip polymer electrolyte membrane (PEM) fuel cells
  In Tagungsband "Solid-State Circuits Conference-Digest of Technical Papers, 2009. ISSCC 2009. IEEE International" der IEEE, 2009, p. 292--293
  Abstract:
  
  BibTeX:
  @inproceedings{frank2009integrated2,
  author = {Frank and Mirko and Kuhl and Matthias and Erdler and Gilbert and Freund and Ingo and Manoli and Yiannos and M{\"u}ller and Claas and Reinecke and Holger},
  title = {{A}n integrated power supply system for low-power 3.3 {V} electronics using on-chip polymer electrolyte membrane ({P}{E}{M}) fuel cells},
  year = {2009},
  booktitle = {Solid-State Circuits Conference-Digest of Technical Papers, 2009. ISSCC 2009. IEEE International},
  organization = {IEEE},
  pages = {292--293} }
  [BibTeX]
  
  

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