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为简化变迹叉指换能器设计过程,提出了一种新的变迹叉指换能器的设计方法,它以叉指换能器的中心频率处的插入损耗和旁瓣电平作为寻优目标,叉指换能器的指条长度作为基因,通过选择、交叉和变异等遗传操作,自动生成叉指换能器的所有指条长度,并给出进化得到的变迹叉指换能器的频率响应。实验结果表明,提出的设计方法正确有效,所编制的进化设计软件包实用性强。
In order to simplify the design process of the apodized interdigital transducer, a new design method of the apodized interdigital transducer is proposed, which is based on the insertion loss and the sidelobe level at the center frequency of the interdigital transducer The excellent target, the finger length of the interdigital transducer, as a gene, automatically generates all the finger lengths of the interdigital transducer through genetic operations such as selection, crossover and mutation, and gives the evolutionarily derived interdigital energy Frequency response of the device. The experimental results show that the proposed design method is correct and effective, and the software package of evolutionary design prepared by the software is practical.