Miniaturized and wideband lumped LTCC branch‐line coupler for dozens of megahertz applications
Miniaturized and wideband lumped LTCC branch‐line coupler for dozens of megahertz applications
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DOI：
10.1002/mop.28548
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发表时间：
2014-09
影响因子：
1.5
通讯作者：
Bo Zhou;Weixing Sheng;Yiyuan Zheng
中科院分区：
文献类型：
--
作者：
Bo Zhou;Weixing Sheng;Yiyuan Zheng
提出了一种小型化和宽带集总元件分支-线路耦合器，该耦合器采用10层低温共烧陶瓷（LTCC）基板，可用于数十MHz的应用。所提出的拓扑结构不仅可以用少量的元件实现32.3%的宽分数带宽，而且可以降低元件尺寸所需的电容和电感。进一步的小型化是通过使用具有8个指的垂直叉指电容器和具有9.5匝的螺旋电感器实现的。所提出的耦合器具有仅0.005 × 0.004 × 0.0004 λg的最小报告尺寸。在52至72 MHz范围内，实测S11、S21、S31和S41分别优于−15、−4.6、−3.9和−13 dB。耦合端口和直接端口的带内相位差在91° ± 1°以内。© 2014 Wiley Periodicals，Inc.微波光学技术快报56：2001-2005，2014
A miniaturized and wideband lumped‐element branch‐line coupler is proposed in a 10‐layer low‐temperature co‐fired ceramic (LTCC) substrate for dozens of megahertz applications. The proposed topology not only enables a wide fractional bandwidth of 32.3% with a small number of elements but also makes the required capacitance and inductance lower for element size reduction. The further miniature is achieved using vertically interdigital‐capacitors with eight fingers and spiral inductors with 9.5 turns. The proposed coupler has the smallest reported size of only 0.005 × 0.004 × 0.0004 λg. Measured S11, S21, S31, and S41 are better than −15, −4.6, −3.9, and −13 dB from 52 to 72 MHz, respectively. And inband phase difference between the coupled and direct ports is within 91° ± 1°. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2001–2005, 2014