This paper will present the continuing developments of a non-interactive SAW filter design automation system. An automation system has been developed for the design and analysis of SAW bidirectional transducers and filters as previously presented. All dominant SAW acoustic and electrical effects have been modeled for non-reflecting transducers in a modular architecture. Synthesis and analysis tools form the core of the design automation system around which an automation shell is used to form the basis of a “SAW Compiler” which is capable of non-interactive SAW filter design. The SAW filter design rules are implemented in a declarative language which provides logical decision control of the CAD system. The design automation system controls the execution and iteratively evaluates options, corrects errors, and decides on an optimal design choice within the set of design rules.
The design curves associated with SAW filters will be developed for implementation in the feasibility check of the design. The analytic development and system implementation will be shown. A flow chart of the system implementation with emphasis on the feasibility check of the design will be presented. Not all design alternatives are optimal or even realistic and therefore a validation process must be implemented to reduce execution time. Each design alternative will be verified in a feasibility module which checks for realistic values, technology implementation, and impractical input against the current state of SAW technology.
This work was funded in part by the Florida High Technology and Industry Council.