Nikolaus Klemmer

ABSTRACT This forum will cover present and future transmitters in wireless infrastructure applications, like base stations for cellular mobile communication. Future digitized transmitter architectures will most likely be based upon the... more

ABSTRACT This forum will cover present and future transmitters in wireless infrastructure applications, like base stations for cellular mobile communication. Future digitized transmitter architectures will most likely be based upon the use of advanced RF DACs or ultra high speed DACs in combination with up conversion techniques. These digital transmitter architectures need flexible (re-configurable) power amplifiers which make use of advanced techniques like multi-way Doherty or envelope tracking. Enhanced linearization techniques need to be applied in the transmitter to cope with the stringent linearity demands, while advanced calibration techniques and other design techniques will be needed to overcome circuit block impairments.

Publication Date: 2011

Publication Name: 2011 IEEE International Solid-State Circuits Conference

Research Interests:
Mobile Communication, Radio Frequency, Power Amplifier, and Wireless Communication

Publication Date: Dec 8, 2004

Publication Date: Sep 13, 2006

Publication Date: Jul 25, 2006

Publication Date: Nov 21, 2000

Publication Date: Jul 3, 2008

Publication Date: Mar 25, 2004

Publication Date: Dec 25, 2008

Publication Date: Apr 15, 2008

Publication Date: Mar 5, 2004

Publication Date: 1994

Publication Name: Proceedings of 1995 IEEE Multi-Chip Module Conference (MCMC-95)

Research Interests:
System Design, High Frequency, Cross Section, Three Dimensional, Inductance, and Skin Effect

Publication Date: 2007

Publication Name: 2007 IEEE International Solid-State Circuits Conference. Digest of Technical Papers

Research Interests:
Modulation, Radio Frequency, Oscillators, TRANSMITTERS, and Transceivers

Publication Date: 2012

Publication Name: IEICE Transactions on Electronics

Research Interests:
Electrical And Electronic Engineering

Publication Date: Apr 20, 2011

... Nikolaus Klemmer ERICSSON Research and Development 7001 Development Drive, PO Box 13969, Research Triangle Park, NC, 27709, USA klemmer@rtp.ericsson.se, Tel.: +1-919-472-7588 Jurgen Hartung SICAN Research and Developmcnt Garbsener... more

... Nikolaus Klemmer ERICSSON Research and Development 7001 Development Drive, PO Box 13969, Research Triangle Park, NC, 27709, USA klemmer@rtp.ericsson.se, Tel.: +1-919-472-7588 Jurgen Hartung SICAN Research and Developmcnt Garbsener Landstrde ...

Publication Date: 1997

Publication Name: Proceedings 1997 IEEE Multi-Chip Module Conference

Research Interests:
Software Tool

An accurate physical model of switched-capacitor ΔΣ analog-to-digital converters (ADCs) noise is presented. Noise artifacts for various ADC blocks are captured using simple equations. Model is verified against measured 0.25-μm high... more

An accurate physical model of switched-capacitor ΔΣ analog-to-digital converters (ADCs) noise is presented. Noise artifacts for various ADC blocks are captured using simple equations. Model is verified against measured 0.25-μm high dynamic range ADC test chip for a wireless receiver. Design guidelines based on the proposed model are discussed.

Publication Date: 2000

Publication Name: IEEE Transactions on Circuits and Systems I: Regular Papers

Research Interests:
High Dynamic Range, Chip, Switched Capacitor Filters, Physical Model, and Electrical And Electronic Engineering

Publication Date: 2006

Publication Name: IEEE Journal of Solid-State Circuits

Research Interests:
Switching, Noise, Clock, Capacitor, Modulator, and 4 moreSwitched Capacitor Filters, Amplifier, Signal to Noise Ratio, and Electrical And Electronic Engineering

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Publication Date: Jul 24, 2001

Publication Date: Mar 16, 2004

Publication Date: Oct 18, 2011

Publication Date: Nov 1, 2012

Publication Date: Oct 23, 2002

Publication Date: Aug 27, 2003

Publication Date: Apr 2, 2009

Publication Date: Jul 24, 2001

Abstract With an ever-increasing number of frequency bands supported by cellular transceivers (TRX), front-end (FE) complexity increases due to a large number of external SAW filters. The challenge of removing inter-stage filters from... more

Abstract With an ever-increasing number of frequency bands supported by cellular transceivers (TRX), front-end (FE) complexity increases due to a large number of external SAW filters. The challenge of removing inter-stage filters from multiband 3G receivers (RX) ...

Publication Date: 2009

Publication Name: 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers

Research Interests:
Non Functional Requirement, Solid State Devices and Circuits, Front end, Phase Noise, and Dynamic Range

Publication Date: 2004

Publication Name: Proceedings of the IEEE 2004 Custom Integrated Circuits Conference (IEEE Cat. No.04CH37571)

Research Interests:
Radio Transmitters, Power Amplifier, Phase Modulation, and Amplitude Modulation

... Himanshu Arora Marvell Semiconductor 5488 Marvell Lane Santa Clara, CA, USA ha@ee.duke.edu ... 2003. [10] Himanshu Arora, Nikolaus Klemmer, James Morizio and Patrick Wolf, Enhanced Phase Noise Modeling of Fractional-N Frequency... more

... Himanshu Arora Marvell Semiconductor 5488 Marvell Lane Santa Clara, CA, USA ha@ee.duke.edu ... 2003. [10] Himanshu Arora, Nikolaus Klemmer, James Morizio and Patrick Wolf, Enhanced Phase Noise Modeling of Fractional-N Frequency Synthesizers, IEEE Trans. ...

Publication Date: 2007

Publication Name: Proceedings of the 17th great lakes symposium on Great lakes symposium on VLSI - GLSVLSI '07

Research Interests:
Frequency Synthesizer, Spectrum, Chip, Charge Pump, VCO, and 4 morePhase Noise, Thermal Noise, Data Transmission, and Phase frequency detector

... Fractional-N Frequency Synthesizers Himanshu Arora Marvell Semiconductor Santa Clara California, USA ha@ee.duke.edu Nikolaus Klemmer Ericsson Mobile Platforms Research Triangle Park Durham, NC nikolaus.klemmer@ericsson.com ...

Publication Date: 2007

Publication Name: 18th IEEE/IFIP International Workshop on Rapid System Prototyping (RSP '07)

Research Interests:
Hardware Description Languages, Field-Programmable Gate Arrays, System Design, Hardware Design, IC design, and 8 moreProcess Design, Radio Frequency, Design Methodology, Frequency Synthesizer, Prototypes, Hardware Implementation of Algorithms, Frequency synthesizers, and Phase Locked Loops

... Validation With Measured Results Himanshu Arora Marvell Semiconductor Santa Clara California, USA ha@ee.duke.edu Nikolaus Klemmer Ericsson Mobile Platforms Research Triangle Park Durham, NC nikolaus.klemmer@ericsson.com ...

Publication Date: 2007

Publication Name: IEEE Computer Society Annual Symposium on VLSI (ISVLSI '07)

Research Interests:
System Design, Behavior Modeling, Mathematical Model, Frequency Synthesizer, Circuit Design, and 12 moreFlicker Noise, Frequency synthesizers, Charge Pump, Time Domain, VCO, Phase Noise, Phase Locked Loops, Adaptive Delta Modulation, Frequency Domain, Noise analysis, Phase frequency detector, and Delta Sigma Modulator

Publication Date: 2014

Publication Name: 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)

Research Interests:
Phase Noise

ABSTRACT This forum will cover present and future transmitters in wireless infrastructure applications, like base stations for cellular mobile communication. Future digitized transmitter architectures will most likely be based upon the... more

ABSTRACT This forum will cover present and future transmitters in wireless infrastructure applications, like base stations for cellular mobile communication. Future digitized transmitter architectures will most likely be based upon the use of advanced RF DACs or ultra high speed DACs in combination with up conversion techniques. These digital transmitter architectures need flexible (re-configurable) power amplifiers which make use of advanced techniques like multi-way Doherty or envelope tracking. Enhanced linearization techniques need to be applied in the transmitter to cope with the stringent linearity demands, while advanced calibration techniques and other design techniques will be needed to overcome circuit block impairments.

Publication Date: 2011

Publication Name: 2011 IEEE International Solid-State Circuits Conference

Research Interests:
Mobile Communication, Radio Frequency, Power Amplifier, and Wireless Communication

1ST-Ericsson, Lund, Sweden, 2Ericsson, Lund, Sweden, 3Formerly with ST-Ericsson, Raleigh, NC, 4Lund University, Lund, Sweden The future of cellular radio ICs lies in the integration of an ever-increasing num-ber of bands and channel... more

1ST-Ericsson, Lund, Sweden, 2Ericsson, Lund, Sweden, 3Formerly with ST-Ericsson, Raleigh, NC, 4Lund University, Lund, Sweden The future of cellular radio ICs lies in the integration of an ever-increasing num-ber of bands and channel bandwidths. Figure 21.2.1 shows ...

Publication Date: 2011

Publication Name: 2011 IEEE International Solid-State Circuits Conference

Research Interests:
Radio Frequency, Spread Spectrum Communication, Solid State Devices and Circuits, and Phase Lock Loop

Publication Date: 2008

Publication Name: 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers

Research Interests:
Frequency, Circuits, Tuning, DT Signal+generators, and Ring Oscillators

AbstractMathematical models for the behavior of fractional-N phase-locked-loop frequency synthesizers (Frac-N) are presented. The models are intended for calculating rms phase error and de-termining spurs in the output of Frac-N. The... more

AbstractMathematical models for the behavior of fractional-N phase-locked-loop frequency synthesizers (Frac-N) are presented. The models are intended for calculating rms phase error and de-termining spurs in the output of Frac-N. The models describe noise contributions ...

Publication Date: 2000

Publication Name: IEEE Transactions on Circuits and Systems I: Regular Papers

Research Interests:
Voltage Controlled Oscillator, Mathematical Model, Frequency Synthesizer, Constant Time Delay, Flicker Noise, and 9 moreFrequency synthesizers, Charge Pump, Phase Noise, Electrical And Electronic Engineering, Phase Locked Loops, Thermal Noise, Duty Cycle, Phase frequency detector, and Phase Lock Loop

The 37 papers in this special issue were originally presented at the IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco, CA, in February 2009. They were take from the best of the Analog, Data Converters, RF,... more

The 37 papers in this special issue were originally presented at the IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco, CA, in February 2009. They were take from the best of the Analog, Data Converters, RF, Wireless Communications, Wireline Communications, and MEMS, Imagers, and Display sessions.

Publication Date: 2000

Publication Name: IEEE Journal of Solid-State Circuits

Research Interests:
Cryptography, Electromagnetic Interference, Power Generation, Hardware, San Francisco, and 6 moreSystem on a Chip, Phase Noise, Wireless Communication, Electrical And Electronic Engineering, Phase Locked Loops, and Network on a Chip

Publication Date: 1994

Publication Name: Neural Networks

Research Interests:
Neural Networks, Multidisciplinary, and Hebbian learning

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Publication Date: 2011

Publication Name: 2011 IEEE International Solid-State Circuits Conference

Research Interests: Mobile Communication, Radio Frequency, Power Amplifier, and Wireless Communication <div> () </div>

Publication Date: Dec 8, 2004

Publication Date: Sep 13, 2006

Publication Date: Jul 25, 2006

Publication Date: Nov 21, 2000

Publication Date: Jul 3, 2008

Publication Date: Mar 25, 2004

Publication Date: Dec 25, 2008

Publication Date: Apr 15, 2008

Publication Date: Mar 5, 2004

Publication Date: 1994

Publication Name: Proceedings of 1995 IEEE Multi-Chip Module Conference (MCMC-95)

Research Interests: System Design, High Frequency, Cross Section, Three Dimensional, Inductance, and Skin Effect <div> () </div>

Publication Date: 2007

Publication Name: 2007 IEEE International Solid-State Circuits Conference. Digest of Technical Papers

Research Interests: Modulation, Radio Frequency, Oscillators, TRANSMITTERS, and Transceivers <div> () </div>

Publication Date: 2012

Publication Name: IEICE Transactions on Electronics

Research Interests: Electrical And Electronic Engineering <div> () </div>

Publication Date: Apr 20, 2011

Publication Date: 1997

Publication Name: Proceedings 1997 IEEE Multi-Chip Module Conference

Research Interests: Software Tool <div> () </div>

Publication Date: 2000

Publication Name: IEEE Transactions on Circuits and Systems I: Regular Papers

Research Interests: High Dynamic Range, Chip, Switched Capacitor Filters, Physical Model, and Electrical And Electronic Engineering <div> () </div>

Publication Date: 2006

Publication Name: IEEE Journal of Solid-State Circuits

Publication Date: Jul 24, 2001

Publication Date: Mar 16, 2004

Publication Date: Oct 18, 2011

Publication Date: Nov 1, 2012

Publication Date: Oct 23, 2002

Publication Date: Aug 27, 2003

Publication Date: Apr 2, 2009

Publication Date: Jul 24, 2001

Publication Date: 2009

Publication Name: 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers

Research Interests: Non Functional Requirement, Solid State Devices and Circuits, Front end, Phase Noise, and Dynamic Range <div> () </div>

Publication Date: 2004

Publication Name: Proceedings of the IEEE 2004 Custom Integrated Circuits Conference (IEEE Cat. No.04CH37571)

Research Interests: Radio Transmitters, Power Amplifier, Phase Modulation, and Amplitude Modulation <div> () </div>

Publication Date: 2007

Publication Name: Proceedings of the 17th great lakes symposium on Great lakes symposium on VLSI - GLSVLSI '07

Publication Date: 2007

Publication Name: 18th IEEE/IFIP International Workshop on Rapid System Prototyping (RSP '07)

Publication Date: 2007

Publication Name: IEEE Computer Society Annual Symposium on VLSI (ISVLSI '07)

Publication Date: 2014

Publication Name: 2014 IEEE 12th International New Circuits and Systems Conference (NEWCAS)

Research Interests: Phase Noise <div> () </div>

Publication Date: 2011

Publication Name: 2011 IEEE International Solid-State Circuits Conference

Research Interests: Mobile Communication, Radio Frequency, Power Amplifier, and Wireless Communication <div> () </div>

Publication Date: 2011

Publication Name: 2011 IEEE International Solid-State Circuits Conference

Research Interests: Radio Frequency, Spread Spectrum Communication, Solid State Devices and Circuits, and Phase Lock Loop <div> () </div>

Publication Date: 2008

Publication Name: 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers

Research Interests: Frequency, Circuits, Tuning, DT Signal+generators, and Ring Oscillators <div> () </div>

Publication Date: 2000

Publication Name: IEEE Transactions on Circuits and Systems I: Regular Papers

Publication Date: 2000

Publication Name: IEEE Journal of Solid-State Circuits

Publication Date: 1994

Publication Name: Neural Networks

Research Interests: Neural Networks, Multidisciplinary, and Hebbian learning <div> () </div>

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Research Interests:
Mobile Communication, Radio Frequency, Power Amplifier, and Wireless Communication

Research Interests:
System Design, High Frequency, Cross Section, Three Dimensional, Inductance, and Skin Effect

Research Interests:
Modulation, Radio Frequency, Oscillators, TRANSMITTERS, and Transceivers

Research Interests:
Electrical And Electronic Engineering

Research Interests:
Software Tool

Research Interests:
High Dynamic Range, Chip, Switched Capacitor Filters, Physical Model, and Electrical And Electronic Engineering

Research Interests:
Non Functional Requirement, Solid State Devices and Circuits, Front end, Phase Noise, and Dynamic Range

Research Interests:
Radio Transmitters, Power Amplifier, Phase Modulation, and Amplitude Modulation

Research Interests:
Phase Noise

Research Interests:
Mobile Communication, Radio Frequency, Power Amplifier, and Wireless Communication

Research Interests:
Radio Frequency, Spread Spectrum Communication, Solid State Devices and Circuits, and Phase Lock Loop

Research Interests:
Frequency, Circuits, Tuning, DT Signal+generators, and Ring Oscillators

Research Interests:
Neural Networks, Multidisciplinary, and Hebbian learning