发明授权
US4245200A Method of intermediate frequency filtration in a television receiver 失效
电视接收机中的中频滤波方法

Method of intermediate frequency filtration in a television receiver
摘要:
An elastic surface wave device includes a transducer having an elastic surface wave propagated in the direction of 75 to 133 degrees to a Y-axis on an X-cut lithium tantalate (LiTaO.sub.3) substrate.
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