With the development of stereo TV and high-definition television(HDTV),an improvement in filter performance becomes necessary. Some second order effects such as diffraction and Triple Transmit Signal(TTS)must be compensated strictly.
随着立体声电视和高清晰电视等的发展,对SAW滤波器的性能提出了更加严格的要求,需要精确校正声表面波滤波器的衍射、三次行程信号等二阶效应。
参考来源 - 电视中频声表面波滤波器的设计及其二阶效应补偿方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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