Surface acoustic wave device
专利汇可以提供Surface acoustic wave device专利检索，专利查询，专利分析的服务。并且PURPOSE:To prevent the degradation of characteristics due to unnecessary waves generated in a surface acoustic wave device, by equalizing lengths between a connection point of an input-side electrode to a conductive line and connection points of an output-side electrode to two conductive lines to each other. CONSTITUTION:A surface acoustic wave device 30 consists of piezoelectric substrate 33 where a transducer consisting of an output-side electrode 31 and an input-side electrode 32 and others are arranged. A shield electrode 37 connected electrically to the electrode 32 through a lead wire is formed between electrodes 31 and 32. The electrode 31 is connected to a stem terminal 34 through bonding wires 3301 and 3302 connected to connection points 3303 and 3304 respectively. The electrode 32 is connected to the stem terminal 34 through a bonding wire 3201 connected to a connection point 3202. The length between connection points 3202 and 3303 is equalized practically to that between connection points 3202 and 3304. Thus, electromagnetic coupling of wires 3201 and 3301 and that of wires 3201 and 3302 are equal to each other, and electromagnetic coupling is cancelled when a differential amplifier is connected to the electrode 31, and unnecessary waves are not generated.，下面是Surface acoustic wave device专利的具体信息内容。
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