A Computer Aided Design Tool for Active Radio Frequency Antenna Arrays

Period of Performance: 10/15/2001 - 10/14/2003


Phase 2 SBIR

Recipient Firm

Emag Technologies, Inc.
775 Technology Dr. Suite 300
Ann Arbor, MI 48108
Principal Investigator


The objective of this Small Business Innovation Research project is to develop a visual CAD software tool for the design of large-scale active radio frequency antenna arrays. A circuit-based global modeling strategy is proposed that can integrate the analyses of spatially distributed electromagnetic structures, linear passive networks and nonlinear active circuits within a unified framework that can even incorporate thermal analysis in a self-consistent manner. The proposed strategy can be utilized in both frequency and time domains. The Phase I study so far has demonstrated the feasibility of interfacing full-wave frequency domain electromagnetic simulators with a general-purpose linear/nonlinear circuit simulator that uses a harmonic balance technique. In the proposed Phase II, the full-wave simulation engines will be fully integrated with the nonlinear circuit simulator within a unified design environment. A time domain capability will also be added to address certain classes of nonlinear structures and their transient analysis. The developed software will be validated extensively using a number of test structures including active antenna arrays and nonlinear microwave circuits. The object-oriented architecture of emPiCASSO, our commercial antenna CAD tool, will be used as the foundation of the proposed software.