SBIR-STTR Award

Adaptive Computing for RF Device and Component Modeling
Award last edited on: 10/13/2005

Sponsored Program
SBIR
Awarding Agency
DOD : AF
Total Award Amount
$799,169
Award Phase
2
Solicitation Topic Code
AF97-125
Principal Investigator
John Silvestro

Company Information

Ansoft Corporation (AKA: Ansoft LLC~ANSYS Inc)

225 West Station Square Drive Suite 200
Pittsburgh, PA 15219
   (412) 261-3200
   info@ansoft.com
   www.ansoft.com
Location: Multiple
Congr. District: 18
County: Allegheny

Phase I

Contract Number: F33615-97-C-1070
Start Date: 4/7/1997    Completed: 1/7/1998
Phase I year
1997
Phase I Amount
$72,000
While circuit simulation tools have revolutionized the art of RF and microwave design, these tools are only as good as the component values they employ. The increased demand for reduced design cycles and easier to manufacture systems has generated the need for accurate and reliable tools. Current circuit simulation tools use component models that do not always account for parasitic coupling, non-standard shapes, and numerous other effects present in a real world design. A general and more efficient approach to creating such high-accuracy models is proposed herein. We propose to develop a neural network-based tool to provide accurate and complete component models needed for efficient and accurate circuit simulation. The advantage of this approach is that the models are universal, highly efficient, and simple to use. Under this Phase I project, we propose to investigate the usefulness of neural network-based models for a particular circuit simulation task. We will use state of the art electromagnetic field simulators to create the data needed to train the neural networks to simulate certain circuit elements that are widely used today. The Phase I work will show the potential of this approach for use in future microwave CAD tools.

Phase II

Contract Number: F33615-98-C-1213
Start Date: 3/13/1998    Completed: 6/13/2000
Phase II year
1998
Phase II Amount
$727,169
With the rising demand for wireless hardware and the faster clock speeds in digital designs there is a growing need for more efficient and accurate circuit simulation tools. A methodology is proposed to blend the promising new artificial intelligence technique known as neural networks into Ansoft's suite of microwave and digital circuit design tools, using Ansoft electromagnetic tools to train the neural nets. The first objective of this proposed work is to replace some of the circuit models currently used in Ansoft's SuperCompact/Harmonica circuit tool with neural network based models derived from accurate electromagnetic simulation. Accurate and efficient element tool models are crucial to the effective use of any circuit simulation tool. The second objective is to reasearch the possibility of offering as an option a trainable neural network tool. The user would use our suite of electromangetic field simulation tools to create the training data for net curcuit element models. The user could then customize his/her circuit tools by creating efficient circuit models for specialized elements. These circuit models would be used in the SuperCompact/Harmonica tools and in our SpiceLink signal integrity design tool.

Keywords:
CAD EM Simulation Neural Networks Artificial Intelligence