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| 1 | 基于单端口群时延优化的高温超导滤波器和四工器设计显示文摘本文介绍了以单端口群时延作为目标的空间映射优化法,并用该方法设计了一个8阶滤波器和一个高温超导四工器.该阶滤波器中心频率为3000MHz,带宽为40MHz.而四工器的四个工作频段分别为3640MHz^3740MHz、3780MHz^3820MHz、3880MHz^3930MHz、3970MHz^4030MHz.仿真结果表明用此方法设计得到的滤波器和四工器在通带内回波损耗均可达到-22dB以下,纹波系数小于0.1dB,且四工器各通道间隔离度大于40dB.另外,仿真结果和理论计算得到的S参数曲线基本一致.上述结果验证了基于单端口群时延的空间映射法是一种高效准确的微波电路仿真设计方法. | 葛德永 张旭 何明 赵新杰 胡磊 季鲁 阎少林 | 2013 | 电子学报2013，41，11： | 10 |
| 2 | A high-performance narrowband high temperature superconducting filter显示文摘Recent development of a high-performance narrowband high-temperature superconducting (HTS) filter is presented. A 10-pole quasi-elliptic function response filter with two pairs of transmission zeros (for high selectivity), which has a center frequency of 2.185 GHz and a 3 dB bandwidth of 10 MHz (a fractional bandwidth of 0.45%), is introduced. The filter was fabricated on a 40 mm×16 mm×0.5 mm MgO wafer with double-sided YBCO films. The measured results show that the filter has 0.15 dB insertion loss at the center of the passband and a return loss better than -22.5 dB at a temperature of 67 K.Band edge steepness reaches over 28.3 dB/MHz at both the low and high frequency edges. The out-of-band rejection is over 78 dB at 8 MHz away from the center frequency and close to 100 dB in a wideband range. | CUI Bin ZHANG XueQiang SUN Liang BIAN YongBo GUO Jin WANG Jia LI ChunGuang LI Hong ZHANG Qiang HE YuSheng | 2010 | Chinese Science Bulletin2010，55，14： | 6 |
| 3 | Character and fabrication of Al/Al_2O_3/Al tunnel junctions for qubit application显示文摘The superconductive Josephson junction is the key device for superconducting quantum computation. We have fabricated Al/Al2O3/Al tunnel junctions using a double angle evaporation method based on a suspended shadow mask. The Al2O3 junction barrier has been formed by introducing pure oxygen into the chamber during the fabrication process. We have adjusted exposure conditions by changing either the oxygen pressure or the oxidizing time during the formation of tunnel barriers to control the critical current density Jc and the junction specific resistance Rc. Measurements of the leakage in Al/Al2O3/Al tunnel junctions show that the devices are suitable for qubit applications. | SHEN DanDan ZHU Ran XU WeiWei CHANG JunJie JI ZhengMing SUN GuoZhu CAO ChunHai CHEN Jian | 2012 | Chinese Science Bulletin2012，57，4： | 4 |
| 4 | 高温超导双工器综合与设计显示文摘介绍了一种高温超导双工器的设计方法。双工器包含一个公共节点和两个带通滤波器。作者使用开环半波长谐振器作为公共节点用于合并两信道滤波器,同时作为消纳网络消除滤波器之间的影响。各信道滤波器均包含了六个带折叠耦合线的发卡型谐振器,利用跨线引入交叉耦合。该高温超导双工器工作在C波段,仿真结果与理论计算结果相一致,说明了该设计方法的有效性。 | 夏侯海 何明 季鲁 赵新杰 方兰 阎少林 | 2011 | 低温与超导2011，39，5： | 2 |
| 5 | 高温超导四工器的设计与仿真显示文摘文中基于单端口群时延设计了一款高温超导四工器。该四工器为四个四阶的滤波器并联,采用半波长开环耦合结构和L型谐振器,最终仿真回波损耗可以达到-24.4dB以下,与理想曲线吻合良好。本设计方法很好的解决了以往多工器占用面积过大、不同信道之间影响严重、仿真时间较长的问题,实现了超导多工器小型化,并缩短了多工器的设计周期。 | 杜佳男 葛德永 杨丰兰 胡磊 何明 张旭 季鲁 | 2013 | 低温与超导2013，41，2： | 2 |
| 6 | 超导量子比特中铝超导隧道结的性能显示文摘超导隧道结约瑟夫森结是超导量子比特的基本元件.用双层光刻胶构成悬空掩模,用电子束斜蒸发的方法制备Al/Al2O3/Al隧道结,用一定的氧气气压氧化铝膜作为势垒层.势垒层质量直接影响铝超导隧道结的各项电学参数.深入研究了铝超导隧道结的超导临界电流密度Jc和面积归一化电阻Rc(正常态电阻RN与结面积的乘积)与势垒层生长条件的关系,通过改变势垒层生长的氧分压与氧化时间来控制铝超导隧道结的Jc和Rc,以使此工艺所制备的铝隧道结漏电流小,结参数易于控制,满足制备超导量子比特的要求. | 沈丹丹 朱冉 许伟伟 常俊杰 吉争鸣 孙国柱 曹春海 陈健 | 2011 | 科学通报2011，56，34： | 2 |
| 7 | 高温超导多工器的设计显示文摘文中以公共端口的散射参数为优化目标,设计了一款S波段高温超导四工器。提出了一种通过匹配网络将4个平行耦合式发夹滤波器并联的四工器结构,该结构较好地解决了通道间的相互影响,减小了四工器尺寸;采用了主动式空间映射法,缩短了四工器设计周期。最终,4个信道的回波损耗都达到了-23 d B,证明了该文所提出方法的正确性和高效性。 | 华德训 顾月 | 2018 | 电子科技2018，31，5： | 2 |
| 8 | A VHF band HTS filter based on modified single-spiral resonators for radio astronomy application显示文摘A 10-pole quasi-elliptic bandpass filter (BPF) with a relatively wide passband in the very high frequency (VHF) band was designed and fabricated using YBCO thin films deposited on both sides of a LaAlO3 substrate. Single-spiral resonators were modified to generate strong coupling and reduce the parasitic coupling. We analysed the coupling polarities between the modified resonators. Two pairs of attenuation poles were introduced in the filter for sharp cut-off response. The measurements showed that the filter has a centre frequency of 255.8 MHz, fractional bandwidth of about 12.3%, insertion loss of smaller than 0.265 dB, and the return loss in the passband of better than 17.5 dB, in good agreement with computer simulations. | LI Chao SUN Liang WANG Jia BIAN YongBo YU Tao LI Fei LI ChunGuang LI Hong GU ChangZhi HE YuSheng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，5： | 0 |
| 9 | 一种基于三角形耦合环的可调同轴腔滤波器显示文摘提出并研究了一种用于小型化同轴腔可调带通滤波器的新型腔间耦合结构,这种结构可使滤波器绝对带宽在工作频率范围内几乎保持常数。新型腔间耦合结构由三角形耦合环和矩形耦合窗复合组成,它能在保持腔间耦合度的情况下控制腔间耦合带宽随工作频率的变化,从而使可调滤波器在工作频段内的高低端绝对带宽保持不变。文中在分析同轴腔内电磁场分布的基础上得出了带宽恒定条件下的结构参数约束范围。采用这种耦合结构设计并制作的3腔同轴腔可调滤波器得到了56%的调谐范围和小于±3%的带宽差。 | 张忠海 官伯然 | 2010 | 微波学报2010，26，5： | 0 |
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