M
Mike Monett
- Jan 1, 1970
- 0
This may be of interest to some in the group:
IBM Electromagnetic Field Solver Suite of Tools
A suite of full-wave and quasi-static electromagnetic field solver
tools used to calculate the electrical parameters for
interconnection and packaging design.
The increase in complexity and data rates encountered in high-end
computer systems requires larger, more accurate, and
higher-bandwidth model generation for system performance
evaluations. Modeling tools need to allow noise-free designs with
fast turn-around times for many iterations in the design cycle, in
addition to good productivity through interfaces to CAD tools and
standard file formats.
The IBM Electromagnetic Field Solver Suite of Tools meets these
needs. It includes full-wave two-dimensional and three-dimensional
and quasi-static two-dimensional and three-dimensional tools, which
are robust and accurate electromagnetic (EM) solvers for large
problems. These solvers have unique features not otherwise available
in the industry. The IBM Electromagnetic Field Solver Suite of Tools
generates models for the signal and noise integrity analyses of
critical system paths in order to afford multi-GHz operation.
Platform requirements
Operating system: L32-bit Linux, Red Hat 9.1 (recommended)
Hardware:
1 GB RAM, minimum
9 GB disk space, minimum
Download:
eip.zip 11776KB Zip file containing IBM Electromagnetic Field Solver
http://www.alphaworks.ibm.com/tech/eip
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
IBM Broadband Transmission-line Characterization Using Short-Pulse
Propagation
A software toolkit containing an advanced 2D field solver and
signal-processing facility for extracting broadband transmission
line properties.
IBM uses printed-circuit board materials in its servers that are
incompletely or erroneously characterized by typical fabricators.
This problem results in IBM's having to perform extensive
recharacterization in order to extract the frequency-dependent
properties of such structures so that accurate predictions of system
performance can be made. This toolkit can be used to perform
accurate extraction of broadband material properties and it thus
reduces or eliminates design errors prior to product manufacturing.
In addition, this technology is suitable for sharing with university
educators for the purpose of training future engineers to perform
complete material characterization of representative, multilayer
wiring structures. Such broadband, causal extraction techniques
cannot be obtained with other network analyzer-based techniques that
are routinely employed in the industry. Broadband properties are
essential for generating accurate models for digital signal
simulations that have random-pattern data strings. Enforcement of
causality is essential for >10GHz bandwidth signals.
The two components of this toolkit are CZ2D and Gamma-Z. CZ2D is a
two-dimensional, electromagnetic modeling tool that has built-in
facilities to guarantee causal results over wide frequency range.
Gamma-Z provides the signal processing capability of the propagated
short-pulses launched on very simple test wiring.
CZ2D is a two-dimensional, "method-of-moment"-based field solver
that calculates resistance (R), inductance (L), capacitance (C), and
conductance (G) per unit length for any transmission line structure,
such as printed circuit board interconnections. Frequency-dependent
calculation can be made that is guaranteed causal for both R(f)L(f)
and C(f)G(f) and for inhomogeneous dielectrics.
Gamma-Z is a broadband, lossy transmission line tool that accepts
two digitized short pulses that are propagated on two lengths of
identical transmission lines. The tool performs signal processing,
rectangular time windowing of end effects, Fourier transformation,
and ratioing. From this operation, the propagation constant G
(Gamma) and characteristic impedance Zo (Z in Gamma-Z) are obtained.
The same elements are also calculated using CZ2D and a starting set
of values of the complex permittivity for the material being
evaluated. A built-in Debye model in CZ2D guarantees causality of
results. By comparing the measured and calculated results and
iterating a few times, the broadband complex permittivity is
obtained.
The package includes the executable for CZ2D on Linux Red Hat 9.1
and Gamma-Z for the Windows platform. Manuals are also included,
along with some example "run" cases. A graphical user interface
(GUI) is additional software that allows the user to put in
structure configurations to be solved using the toolkit.
The CZ2D component runs on Linux Red Hat 9.1, and Gamma-Z runs on
Windows.
How does it work?
A short-pulse propagation technique is used to extract the
frequency-dependent material parameters by using signal processing
and structure modeling. The requirements for using this software
involve standardized pulse generators and sampling oscilloscopes.
Gamma-Z software provides the signal processing of the propagated
pulses and the results are fitted to modeled results based on CZ2D
calculations. A Fourier transformation is performed in order to
obtain G (propagation constant) and Zo (characteristic impedance),
the two parameters needed for fully analyzing any interconnect, from
which the total attenuation is obtained. Iterative fitting and
modeling allow extraction of complex permittivity over the range 10
KHz to 50 GHz.
This technique is applicable to representative, multilayer circuit
boards, ceramic wiring, cables, or on-chip wiring that are used in
digital and communication applications in the semiconductor industry
when building typical server systems, and especially the ones
targeted for >10GHz clock operation.
http://www.alphaworks.ibm.com/tech/gammazandcz2d
Regards,
Mike Monett
Antiviral, Antibacterial Silver Solution:
http://silversol.freewebpage.org/index.htm
SPICE Analysis of Crystal Oscillators:
http://silversol.freewebpage.org/spice/xtal/clapp.htm
Noise-Rejecting Wideband Sampler:
http://www3.sympatico.ca/add.automation/sampler/intro.htm
IBM Electromagnetic Field Solver Suite of Tools
A suite of full-wave and quasi-static electromagnetic field solver
tools used to calculate the electrical parameters for
interconnection and packaging design.
The increase in complexity and data rates encountered in high-end
computer systems requires larger, more accurate, and
higher-bandwidth model generation for system performance
evaluations. Modeling tools need to allow noise-free designs with
fast turn-around times for many iterations in the design cycle, in
addition to good productivity through interfaces to CAD tools and
standard file formats.
The IBM Electromagnetic Field Solver Suite of Tools meets these
needs. It includes full-wave two-dimensional and three-dimensional
and quasi-static two-dimensional and three-dimensional tools, which
are robust and accurate electromagnetic (EM) solvers for large
problems. These solvers have unique features not otherwise available
in the industry. The IBM Electromagnetic Field Solver Suite of Tools
generates models for the signal and noise integrity analyses of
critical system paths in order to afford multi-GHz operation.
Platform requirements
Operating system: L32-bit Linux, Red Hat 9.1 (recommended)
Hardware:
1 GB RAM, minimum
9 GB disk space, minimum
Download:
eip.zip 11776KB Zip file containing IBM Electromagnetic Field Solver
http://www.alphaworks.ibm.com/tech/eip
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
IBM Broadband Transmission-line Characterization Using Short-Pulse
Propagation
A software toolkit containing an advanced 2D field solver and
signal-processing facility for extracting broadband transmission
line properties.
IBM uses printed-circuit board materials in its servers that are
incompletely or erroneously characterized by typical fabricators.
This problem results in IBM's having to perform extensive
recharacterization in order to extract the frequency-dependent
properties of such structures so that accurate predictions of system
performance can be made. This toolkit can be used to perform
accurate extraction of broadband material properties and it thus
reduces or eliminates design errors prior to product manufacturing.
In addition, this technology is suitable for sharing with university
educators for the purpose of training future engineers to perform
complete material characterization of representative, multilayer
wiring structures. Such broadband, causal extraction techniques
cannot be obtained with other network analyzer-based techniques that
are routinely employed in the industry. Broadband properties are
essential for generating accurate models for digital signal
simulations that have random-pattern data strings. Enforcement of
causality is essential for >10GHz bandwidth signals.
The two components of this toolkit are CZ2D and Gamma-Z. CZ2D is a
two-dimensional, electromagnetic modeling tool that has built-in
facilities to guarantee causal results over wide frequency range.
Gamma-Z provides the signal processing capability of the propagated
short-pulses launched on very simple test wiring.
CZ2D is a two-dimensional, "method-of-moment"-based field solver
that calculates resistance (R), inductance (L), capacitance (C), and
conductance (G) per unit length for any transmission line structure,
such as printed circuit board interconnections. Frequency-dependent
calculation can be made that is guaranteed causal for both R(f)L(f)
and C(f)G(f) and for inhomogeneous dielectrics.
Gamma-Z is a broadband, lossy transmission line tool that accepts
two digitized short pulses that are propagated on two lengths of
identical transmission lines. The tool performs signal processing,
rectangular time windowing of end effects, Fourier transformation,
and ratioing. From this operation, the propagation constant G
(Gamma) and characteristic impedance Zo (Z in Gamma-Z) are obtained.
The same elements are also calculated using CZ2D and a starting set
of values of the complex permittivity for the material being
evaluated. A built-in Debye model in CZ2D guarantees causality of
results. By comparing the measured and calculated results and
iterating a few times, the broadband complex permittivity is
obtained.
The package includes the executable for CZ2D on Linux Red Hat 9.1
and Gamma-Z for the Windows platform. Manuals are also included,
along with some example "run" cases. A graphical user interface
(GUI) is additional software that allows the user to put in
structure configurations to be solved using the toolkit.
The CZ2D component runs on Linux Red Hat 9.1, and Gamma-Z runs on
Windows.
How does it work?
A short-pulse propagation technique is used to extract the
frequency-dependent material parameters by using signal processing
and structure modeling. The requirements for using this software
involve standardized pulse generators and sampling oscilloscopes.
Gamma-Z software provides the signal processing of the propagated
pulses and the results are fitted to modeled results based on CZ2D
calculations. A Fourier transformation is performed in order to
obtain G (propagation constant) and Zo (characteristic impedance),
the two parameters needed for fully analyzing any interconnect, from
which the total attenuation is obtained. Iterative fitting and
modeling allow extraction of complex permittivity over the range 10
KHz to 50 GHz.
This technique is applicable to representative, multilayer circuit
boards, ceramic wiring, cables, or on-chip wiring that are used in
digital and communication applications in the semiconductor industry
when building typical server systems, and especially the ones
targeted for >10GHz clock operation.
http://www.alphaworks.ibm.com/tech/gammazandcz2d
Regards,
Mike Monett
Antiviral, Antibacterial Silver Solution:
http://silversol.freewebpage.org/index.htm
SPICE Analysis of Crystal Oscillators:
http://silversol.freewebpage.org/spice/xtal/clapp.htm
Noise-Rejecting Wideband Sampler:
http://www3.sympatico.ca/add.automation/sampler/intro.htm
