Use of double-layer coupling circuit and additional patxh conductors to improuve power handling capability of HTS transmit filter
Use of double-layer coupling circuit and additional patxh conductors to improuve power handling capability of HTS transmit filter
复制标题
使用双层耦合电路和额外的 patxh 导体来提高 HTS 发射滤波器的功率处理能力
DOI：
10.1016/j.phpro.2012.03.478
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
S. Ohshima
中科院分区：
文献类型：
--
作者：
N.Imai;N.Sekiya;S.Kakio;S. Ohshima
提出使用双层耦合电路和附加贴片导体来提高带状线（SL）结构的高功率高温超导体发射滤波器的功率处理能力。通过谐振器边缘和馈线末端之间的基板形成双层耦合电路。与传统的间隙耦合电路相比，由于双层耦合电路的谐振器和馈线之间的间隙较大，这减少了电流集中。附加的贴片导体（放置在谐振器边缘的上层）通过减少局部磁场集中来提高功率处理能力。研究了具有 5.0 GHz 中心频率和 100 MHz 带宽以及相对介电常数为 9.9 的 Al2O3 基板的两极 SL 双模滤波器的电流密度分布。使用基于矩法的电磁模拟器来设计滤波器，并模拟谐振器边缘处的最大电流密度作为频率的函数。结果表明，具有双层耦合电路和贴片导体的SL滤波器的最大电流密度比传统间隙耦合滤波器低约30%。
The use of a double-layer coupling circuit and additional patch conductors is proposed for improving the power handing capability of high-power high-temperature superconductor transmit filters with stripline (SL) structure. A double-layer coupling circuit is formed through the substrate between the edge of the resonator and the end of the feed line. This reduces the current concentration compared with that of a conventional gap-coupled circuit due to the large gap between the resonator and feed line of the double-layer coupling circuit. The additional patch conductors (placed in the upper layer of the resonator edge) improve the power handling capability by reducing the local magnetic field concentration. The current density distribution of two-pole SL dual-mode filters with a 5.0-GHz center frequency and 100-MHz bandwidth and with an Al2O3 substrate with a relative dielectric constant of 9.9 was investigated. An electromagnetic simulator based on the moment method was used to design the filters, and the maximum current densities at the edges of the resonator as a function of frequency were simulated. The results showed that the maximum current density in an SL filter with a double-layer coupling circuit and patch conductors was approximately 30% less than that of the conventional gap-coupled filter.