| 基于微机电系统开关的四位移相器设计 |
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| 引用本文： | 刘若林,鲍景富,黄裕霖,李昕熠.基于微机电系统开关的四位移相器设计[J].太赫兹科学与电子信息学报,2016,14(1):127-130. |
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| 作者姓名： | 刘若林 鲍景富 黄裕霖 李昕熠 |
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| 作者单位： | School of Electronic Engineering，University of Electronic Science and Technology of China，Chengdu Sichuan 611731，China,School of Electronic Engineering，University of Electronic Science and Technology of China，Chengdu Sichuan 611731，China,School of Electronic Engineering，University of Electronic Science and Technology of China，Chengdu Sichuan 611731，China and School of Electronic Engineering，University of Electronic Science and Technology of China，Chengdu Sichuan 611731，China |
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| 基金项目： | 国家自然科学基金委员会和中国工程物理研究院联合基金资助项目(U1430102) |
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| 摘 要： | 为了解决相控阵雷达小型化和低损耗的问题，设计了一个工作频率为2.2 GHz的射频微机电系统(MEMS)四位开关线型移相器。首先分析了直接接触式MEMS串联开关的插入损耗和隔离度，并得到仿真结果。在此基础上设计了基于该开关的移相范围为0~180o的四位移相器电路，相移量为12o每步。采用HFSS软件对其进行仿真，得到移相精确度、插入损耗和隔离度等关键结果，移相器工作在2.2 GHz时，隔离度大于20 dB，插入损耗小于1 dB。该设计与传统移相器相比体积更小，且具有更小的插入损耗和更大的隔离度。
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| 关 键 词： | 微机电系统开关 移相器 移相精确度 插入损耗 隔离度 |
| 收稿时间： | 2014/11/28 0:00:00 |
| 修稿时间： | 3/3/2015 12:00:00 AM |
Design of a 4-bit phase shifter based on the MEMS switches |
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| LIU Ruolin,BAO Jingfu,HUANG Yulin and LI Xinyi.Design of a 4-bit phase shifter based on the MEMS switches[J].Journal of Terahertz Science and Electronic Information Technology,2016,14(1):127-130. |
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| Authors: | LIU Ruolin BAO Jingfu HUANG Yulin and LI Xinyi |
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| Abstract: | A four-bit linear phase shifter@2.2 GHz based on the Radio Frequency(RF) Micro-Electro- Mechanical Systems(MEMS) switch is designed in order to realize miniaturization and low insertion of the phased array radar. The insertion loss and isolation loss of the direct contact cascade MEMS switch have been analyzed firstly, and the simulation results are obtained. Then a 4-bit phase shifter from 0 to 180o based on the former MEMS switches is designed. The phase shift magnitude is 12o per step. The simulation results including phase shift precision, insertion loss and isolation are obtained by using HFSS software. As the simulation results indicated, the phase shifter has an isolation greater than 20 dB and the insertion loss is less than 1 dB. The phase shifter is more compact compared with the traditional one, and has smaller insertion loss and larger isolation. |
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