Engineering Sciences |
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USE OF SUPERPOSITION PRINCIPLE TO DERIVE A GENERAL MATHEMATICAL MODEL TO SIMULATE ONE-TO-ONE, ONE-TO-MULTI AND MULTI-TO-MULTI SAW FILTER DESIGNS |
Issa Haitham M.A., ZHU Da-zhong, QIU Pei-liang |
Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, China |
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Abstract This paper explains and summarizes a new attempt to derive a general mathematical model [GMM] to simulate surface acoustic wave (SAW) filters, using the superposition principle and delta function model. GMM can be used to simulate One-to-One, One-to-Multi and Multi-to-Multi SAW filter devices. The simulation program was written using MATLAB (the language of technical computing). Four-design structures (One-to-One, One-to-Two, One-to-Three and Ten-to-Ten) are selected to test the correctness of GMM. The frequency response of the simulation and test results are similar in center frequency and 3-dB bandwidth, but the insertion loss is different, because of some second order effects (Issa Haitham, 1999).
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Received: 18 September 2000
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