Liquid-crystal-based amplitude tuner fabricated in LTCC technology

Liquid-crystal-based amplitude tuner fabricated in LTCC technology
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DOI：
10.23919/eumic.2017.8230729
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发表时间：
2017-10
期刊：
2017 47th European Microwave Conference (EuMC)
影响因子：
--
通讯作者：
A. Prasetiadi;M. Jost;B. Schulz;M. Quibeldey;T. Rabe;R. Follmann;R. Jakoby
A. Prasetiadi;M. Jost;B. Schulz;M. Quibeldey;T. Rabe;R. Follmann;R. Jakoby
中科院分区：
其他
文献类型：
--
作者：
A. Prasetiadi;M. Jost;B. Schulz;M. Quibeldey;T. Rabe;R. Follmann;R. Jakoby

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首次提出了一种基于液晶的30 GHz幅度调谐器。利用干扰原理可以控制信号的幅度。输入信号分为可调谐液晶移相器和固定传输线。然后，在输出端口将分割后的信号合并在一起。输出幅度取决于可调线和固定线之间的相位差。采用低温共烧陶瓷技术制作该器件。测量显示衰减范围为11 dB至30 dB，最大偏置电压为100 V。
A 30 GHz liquid-crystal-based amplitude tuner is proposed for the first time. The amplitude of a signal can be controlled by using the interference principle. An input signal is divided into a tunable liquid crystal phase shifter and a fixed transmission line. Later, the divided signals are combined together at the output port. The output amplitude depends on the phase difference between the tunable and the fixed line. The low temperature co-fired ceramic technology is utilized to fabricate the device. The measurement shows an attenuation range of 11 dB to 30 dB with a maximum biasing voltage of 100 V.