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**1 - 1**of**1**### Hierarchical Electromagnetic Modeling Of Quasi-Optical Grid Amplifiers And Oscillators

, 1999

"... NAKAZAWA,SATOSHI. Hierarchical Electromagnetic Modeling of Quasi-Optical Grid Amplifiers and Oscillators (Under the direction of Michael B. Steer.) An integrated computer aided engineering tool for electromagnetic modeling of grid arraylike structures is developed. The tool, YOMOMA, can be used to m ..."

Abstract
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NAKAZAWA,SATOSHI. Hierarchical Electromagnetic Modeling of Quasi-Optical Grid Amplifiers and Oscillators (Under the direction of Michael B. Steer.) An integrated computer aided engineering tool for electromagnetic modeling of grid arraylike structures is developed. The tool, YOMOMA, can be used to model open cavity quasioptical resonator, the grid lens system and free standing grid arrays. The structure is defined using any editor that can produce a CIF file. The hierarchical modeling and parsing using the CIF file is parsed for the geometry structure and adaptive gridding is used to define cell size for Method of Moment electromagnetic analysis. The model extracted is compatible with a circuit simulator. The electromagnetic analysis uses the method of moment which analyzes finite grid arrays with all mutual coupling between cells. The amount of calculation required to fill the MoM impedance matrix is reduced by reusing previously calculated entries where possible. This is achieved by ...