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随着第五代移动通信(5G)时代的到来,高频、大带宽的谐振器成为通信行业的迫切需求。该文设计制备了一款可实现高频超大带宽的横向激发体声波谐振器(XBAR)。该谐振器A1模式的谐振频率为5.81 GHz,机电耦合系数可达39.6%,Q-3 dB为248;A3模式的谐振频率高达17.04 GHz,机电耦合系数为7.0%。该谐振器A1和A3模式的频率温度漂移系数(TCF)分别为-72.6×10-6/℃和-38.5×10-6/℃。此外,该文还提出了一种新型叉指电极(IDT)结构,该结构可以抑制寄生模式,提升谐振器性能。 相似文献
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The alloys based on Al一Mg are very useful in industry.Reeently,suitable rar十earthelements are usually added into them to imProve the Proeessibility and strength.In.Particu-lar,a small amount of Y addition can improve the alloy,5 strength at elevated temPeraturenotably.Determination of the Phase diagram of AI一Mg一Y alloy system 15 imPortant.Inthis work,the Phase boundary of AI一Mg alloys eontaining 0.1 and 0.2wt%of Y in theAI一rich eorner has been determined by the lattiee Parameter… 相似文献
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