基于多条耦合器声表面波式小波重构器件的延时补偿方案

o solve time non-synchronization problem among different scale devices in surface acoustic wave’s (SAW’s) wavelet reconstruction device based on multistrip coupler (MSC), a novel delay time scheme of compensating the distance between MSC and output interdigital transducer (IDT) was proposed. Time synchronization in different scale reconstruction devices was realized by the delay time characteristic of surface acoustic wave (SAW) propagating on crystal substrate surface. Realization of time synchronization ensure that all scale reconstruction devices have same response time for identical trigger signal, and avoids reconstruction error due to time non-synchronization problem among different scale devices. The experiments of compensating a SAW’s wavelet reconstruction device based on MSC with three scales confirm that the delay time compensation scheme is effective.