Carlos E. Christoffersen

Works (7)

Updated: July 5th, 2023 16:02

2011 journal article

Transient simulation based on state variables and waves

International Journal of RF and Microwave Computer-Aided Engineering, 21(3), 314–324.

By: M. Kabir, C. Christoffersen & N. Kriplani

Source: NC State University Libraries
Added: August 6, 2018

2001 article

Electrothermal CAD of power devices and circuits with fully physical time-dependent compact thermal modeling of complex nonlinear 3-d systems

Batty, W., Christoffersen, C. E., Panks, A. J., David, S., Snowden, C. M., & Steer, M. B. (2001, January 1). IEEE Transactions on Components and Packaging Technologies.

By: W. Batty*, C. Christoffersen n, A. Panks*, S. David *, C. Snowden * & M. Steer n

author keywords: circuits; compact modeling; electrothermal; harmonic balance; nonlinear simulation; MMICs; power FETs; spatial power combiners; thermal; transient
topics (OpenAlex): Electromagnetic Simulation and Numerical Methods; Magnetic Properties and Applications; Silicon Carbide Semiconductor Technologies
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Source: Web Of Science
Added: August 6, 2018

2001 article

State-variable-based transient circuit simulation using wavelets

Christoffersen, C. E., & Steer, M. B. (2001, April 1). IEEE Microwave and Wireless Components Letters.

By: C. Christoffersen n & M. Steer n

author keywords: circuit simulation; circuit transient analysis; nonlinear circuits; solitons; wavelet transforms
topics (OpenAlex): Electromagnetic Compatibility and Noise Suppression; Digital Filter Design and Implementation; Advancements in PLL and VCO Technologies
TL;DR: For the first time a state variable transient analysis using wavelets is developed and implemented in a circuit simulator and validated by considering a nonlinear transmission line. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2000 article

Object oriented microwave circuit simulation

Christoffersen, C. E., Mughal, U. A., & Steer, M. B. (2000, May 1). International Journal of RF and Microwave Computer-Aided Engineering.

By: C. Christoffersen n, U. Mughal* & M. Steer*

author keywords: circuit simulation; microwave CAE; object-oriented programming; circuit field interaction; global modeling
topics (OpenAlex): Microwave Engineering and Waveguides
TL;DR: An object-oriented microwave circuit simulation environment is described and the simulation of spatial power combining systems is used as a vehicle to illustrate the architectural developments of the system. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1999 article

Global modeling of spatially distributed microwave and millimeter-wave systems

Steer, M. B., Harvey, J. F., Mink, J. W., Abdulla, M. N., Christoffersen, C. E., Guiterrez, H. M., … Yakovlev, A. B. (1999, June 1). IEEE Transactions on Microwave Theory and Techniques.

By: M. Steer n, J. Harvey*, J. Mink n, M. Abdulla n, C. Christoffersen n, H. Guiterrez*, P. Heron*, C. Hicks n ...

author keywords: circuit field interaction; circuit theory; electromagnetic analysis; global modeling; method of moments; microwave circuits; nonlinear analysis
topics (OpenAlex): Microwave Engineering and Waveguides; Electromagnetic Simulation and Numerical Methods; Advanced Antenna and Metasurface Technologies
Source: Web Of Science
Added: August 6, 2018

1999 article

Implementation of the local reference node concept for spatially distributed circuits

Christoffersen, C. E., & Steer, M. B. (1999, September 1). International Journal of RF and Microwave Computer-Aided Engineering.

By: C. Christoffersen n & M. Steer*

topics (OpenAlex): Microwave Engineering and Waveguides; Millimeter-Wave Propagation and Modeling; Radio Frequency Integrated Circuit Design
TL;DR: A circuit-level approach to the modeling of circuit-field interactions is developed that enables conventional circuit simulators to be extended to incorporate spatially distributed circuits. (via Semantic Scholar)
Source: NC State University Libraries
Added: August 6, 2018

1999 article

State-variable-based transient analysis using convolution

Christoffersen, C. E., Ozkar, M., Steer, M. B., Case, M. G., & Rodwell, M. (1999, June 1). IEEE Transactions on Microwave Theory and Techniques.

By: C. Christoffersen n, M. Ozkar n, M. Steer n, M. Case* & M. Rodwell *

author keywords: circuit simulation; circuit transient analysis; convolution; nonlinear circuits; solitons; state variables
topics (OpenAlex): Radio Frequency Integrated Circuit Design; Photonic and Optical Devices; Advancements in PLL and VCO Technologies
TL;DR: A state-variable-based approach to the impulse response and convolution analysis of distributed microwave circuits is developed that minimizes computation time and memory requirements and allows the use of parameterized nonlinear device models, thus improving robustness. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

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