提出了一种新型的宽带声光表面波叉指换能器(SAW-IDT), 该换能器应用双梯形倾斜电极,可对单梯形倾斜电极IDT通带的高频成分进行补偿,使通带更宽更平直,并无需外补偿网络.
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提出了极性抽指加权叉指换能器设计的新方法，克服了传统设计方法的繁杂性。
A new method to design source-withdrawal weighting transducer is presented, which avoids the complexity when using traditional design methods.
它将输入叉指换能器激发的SAW中心对称分成两路并由各自的输出叉指换能器检测输出。
SAW excited by input interdigital transducer is divided centrosymmetrically into two paths detected by their output interdigital transducer.
实验表明，采用组合式均匀叉指换能器及变形多条耦合器元件可有效提高对陷阱频率的抑制。
The experiments show that suppress at trap frequency can be effectively improved by using composed uniform IDT and modified MSC.
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