摘要
通过分析向列型液晶移相器的原理、结构及可以达到的技术指标,指出采用倒置微带结构设计的液晶移相器的移相度可以达到360°,品质因数可以达到12°/dB,而且运行电压只有30 V左右。在此基础上,提出了该种移相器研究中存在的问题以及改进的办法。向列型液晶移相器具有独特的优势和发展潜力,不久的将来会在相控阵雷达以及卫星通讯等领域起到关键作用。
The principle, structure and the technical indicators of phase shifter using nematic liquid crystals were analysed Using inverted-microstrip technology, a differential phase shifter of 360° and a maximum figure of merit of 12°/dB can be achieved. The control voltage is only 30 V. The existing problems of the phase shifter and the methods to improve them were pointed out. New nematic liquid crystal phase shifter has the unique advantages and potentials, will play an important role in phased-array radar, satellite communications in the near future.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2007年第5期1-3,共3页
Electronic Components And Materials
关键词
电子技术
移相器
综述
液晶
electron technology
phase shifter
summary
liquid crystal
