声电荷传输技术在宽带通信系统中的应用

C. Ward, S.P. Reichart
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引用次数: 0

摘要

讨论了用于通信相关信号处理应用的ACT(声电荷传输)器件的优缺点。ACT器件的主要优势在于ptf(可编程横向滤波器),与竞争技术相比,它们在非常小的物理体积中提供了高度的灵活性,并且功耗更低。ACT ptf的主要限制是其有限的动态范围。设计了一种无线电接收机面包板,可对任意输入波形进行时域和频域信号处理。这个面包板的性能被演示和记录。该面包板设计随后被整合到一个完整的无线电接收系统设计中,旨在应用于LPI(低截获概率)通信。该系统设计充分利用了ACT器件的优点,同时最大限度地减少了其局限性的影响。利用接收机的多模能力,有利于对窄带干扰进行自适应去除,从而为非常可观的扩频处理增益提供附加处理增益。
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The application of acoustic charge transport technologies to wideband communication systems
The strengths and weaknesses of ACT (acoustic charge transport) devices for communication-related signal processing applications are discussed. The main strength of ACT devices is in PTFs (programmable transversal filters), where they offer a high degree of flexibility in very small physical volumes and with lower power dissipation in comparison with competing technologies. The main limitation of ACT PTFs is their limited dynamic range. A radio receiver breadboard was designed to perform both time-domain and frequency-domain signal processing of arbitrary input waveforms. The performance of this breadboard was demonstrated and documented. This breadboard design was then incorporated into a complete radio receiving system design intended for application to LPI (low-probability-of-intercept) communications. The system design exploits the advantages of ACT devices while minimizing the impact of their limitations. The multimode ability of the receiver is used to advantage to perform an adaptive excision of narrowband interference which provides additive processing gain to the very substantial spread spectrum processing gain.<>
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