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针对射频前端的小型化巴伦展开研究,在理论分析上,从变压器型巴伦的原理出发,将电磁场数值方法和微波网络理论相结合,将标准散射(S)参数和混合散射(S)参数相结合,提出了新颖的巴伦特性的理论研究方法;在实际应用上,利用高阻性硅基集成无源器件(Integrated Passive Device,IPD)技术,经过电磁仿真和优化,设计和制作了基于交叉耦合平面螺旋线结构的小型化变压器型巴伦.巴伦的尺寸仅为1.85 mm×1.6 mm,10 dB单端回波损耗带宽为2.07~2.80 GHz,频带内插入损耗小于0.98 dB,差分对幅度失配小于0.43 dB,相位失配小于3.8°,仿真结果得到了实验验证. 相似文献
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将二氧化铈(CeO2)与酶复合修饰电极, 采用循环伏安法研究了血红蛋白(Hb)在CeO2修饰的玻碳电极上的电化学行为. 实验表明, 固定在CeO2材料上的Hb, 不仅能有效地与电极表面进行直接电子转移, 而且能够保持其生物催化活性. 制得的Nafion/CeO2/Hb/GC修饰电极的电子传递速率ks为(0.68±0.09) s-1, 对H2O2的检测限为1.013 μmol•L-1, 重现性和稳定性较好. CeO2在实验中体现出一定的生物相容性, 起到了促进Hb与电极之间进行直接电子传递的作用. CeO2修饰电极进行蛋白质直接电化学测定以及酶生物电催化的成功实践, 为稀土氧化物材料在电化学传感领域中的应用开辟了思路. 相似文献
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高艳 《电子工业专用设备》2015,(4):43-45
介绍了背光单元的主流结构以及工艺要求,阐述了一种背光源前工序组装机的组装工艺,并基于此工艺,提出了一种直线式传输系统。 相似文献
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Evolution behavior of catalytically activated replication-decline in a coagulation process
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We propose a catalytically activated replication-decline model of three species, in which two aggregates of the same species can coagulate themselves, an A aggregate of any size can replicate itself with the help of B aggregates, and the decline of A aggregate occurs under the catalysis of C aggregates. By means of mean-field rate equations, we derive the asymptotic solutions of the aggregate size distribution ak(t) of species A, which is found to depend strongly on the competition among three mechanisms: the self-coagulation of species A, the replication of species A catalyzed by species B, and the decline of species A catalyzed by species C. When the self-coagulation of species A dominates the system, the aggregate size distribution a~(t) satisfies the conventional scaling form. When the catalyzed replication process dominates the system, ak(t) takes the generalized scaling form. When the catalyzed decline process dominates the system, ak(t) approaches the modified scaling form. 相似文献
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