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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Design of SAW FIR filters for quadrature binary modulation systems
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Design of SAW FIR filters for quadrature binary modulation systems

机译：正交二进制调制系统的SAW FIR滤波器设计

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摘要

Approaches for designing surface acoustic wave (SAW) filters used in pulsed quadrature binary modulation (QBM) systems are presented. Several previously defined pulse shapes were implemented by a SAW filter and showed good QBM system performance with respect to modulation envelope nonuniformity (AM) and intersymbol interference (ISI). A new approach to QBM pulse shape definition using both frequency- and time-domain design criteria is described. This approach allows families of new pulse shapes having various levels of AM and spectral confinement to be designed. The approaches to the design equations are presented, and examples of specific pulse shapes and their implementation using SAW filters are given. Time- and frequency-domain results of iteratively designed pulse shapes for application to QBM systems are also presented, showing good performance.
机译：提出了设计用于脉冲正交二进制调制（QBM）系统的表面声波（SAW）滤波器的方法。 SAW滤波器实现了几种先前定义的脉冲形状，它们在调制包络不均匀性（AM）和符号间干扰（ISI）方面显示出良好的QBM系统性能。描述了一种使用频域和时域设计标准进行QBM脉冲形状定义的新方法。这种方法允许设计具有不同水平的AM和频谱限制的新脉冲形状系列。给出了设计方程的方法，并给出了特定脉冲形状的示例及其使用SAW滤波器的实现。还介绍了用于QBM系统的迭代设计脉冲形状的时域和频域结果，显示出良好的性能。

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