Minimising the losses due to EM field discontinuities in a compact LC tunable microstrip line phase shifter
Minimising the losses due to EM field discontinuities in a compact LC tunable microstrip line phase shifter
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DOI：
10.1109/iccps.2014.7062371
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
Huan Xu;Di Jiang;Longzhu Cai;M. Pivnenko;Daping Chu
中科院分区：
文献类型：
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作者：
Huan Xu;Di Jiang;Longzhu Cai;M. Pivnenko;Daping Chu
我们在此介绍我们最近的研究结果，即在低微波 (MW) 频率范围内降低基于液晶 (LC) 的多重折叠可调谐微带线移相器的损耗。结果表明，可以通过最小化折叠微带线结构中的电磁（EM）波不连续性来降低插入损耗和回波损耗。基于改进的6折微带线结构，当前开发的LC移相器的回波损耗降低了10dB，并且在高达10GHz的频率范围内插入损耗被限制在<10dB。此外，还讨论了低 MW 频率范围内 LC 材料损耗的影响。
We present here our recent result on reducing the losses of a multiple-folded tunable microstrip line phase shifter based on liquid crystal (LC) for the regime of low microwave (MW) frequencies. It is shown that the insertion and return losses can be decreased through the minimization of the electromagnetic (EM) wave discontinuities in the folded microstrip line structure. Based on a modified 6-folded microstrip line structure, the return loss of the currently developed LC phase shifter was reduced by 10 dB and the insertion loss was limited to <;10 dB in the frequency range up to 10GHz. In addition, the impact of LC material loss in low MW frequency regime is discussed.