| Q波段脊过渡正交模耦合器设计 |
| |
| 引用本文： | 陈卯蒸,马军,覃律,刘兆明,王娜,王凯.Q波段脊过渡正交模耦合器设计[J].电子科技大学学报（自然科学版）,2018,47(2):178-182. |
| |
| 作者姓名： | 陈卯蒸 马军 覃律 刘兆明 王娜 王凯 |
| |
| 作者单位： | 1.中国科学院新疆天文台 乌鲁木齐 830011 |
| |
| 基金项目： | 国家自然科学基金U1431230国家自然科学基金11253001国家重点基础研究发展计划2015CB857100 |
| |
| 摘 要： | 描述了一款宽带脊过渡正交模耦合器，该正交模耦合器中心频率为40 GHz，相对带宽50%，拟应用于射电望远镜Q波段接收机系统。该正交模耦合器由双脊过渡-分支接头、Y型接头、E型弯头组成，其结构紧凑，降低了加工装配误差对电气性能的影响。对该正交模耦合器实际加工后进行测试，其Y型接头输出口回波损耗≤ -22.7 dB，直臂输出口回波损耗≤ -21.0 dB，Y型接头输出口-直臂输出口隔离度≤ -45.6 dB。实测结果表明该正交模耦合器反射损耗和隔离度与仿真结果的曲线变化趋势基本吻合，在实际工作频带30~50 GHz范围内可以满足射电天文观测需求。
|
| 关 键 词： | 宽带 正交模耦合器 Q波段 脊过渡 |
| 收稿时间： | 2017-03-01 |
Design of a Q Band Orthomode Transducer Based on the Ridged Waveguide Connection |
| |
| Affiliation: | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences Urumqi 8300112.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences Nanjing 2100083.University of Chinese Academy of Sciences Shijingshan Beijing 1000494.The 39 th Research Institute of China Electronics Technology Group Corporation Xi'an 710065 |
| |
| Abstract: | This paper describes a wideband orthomode transducer (OMT) based on the ridged waveguide connection, the center frequency of OMT is 40 GHz, relative bandwidth is 50%. The transducer is aimed to work in Q-band receiver system in radio telescope. This OMT is composed of dual ridged waveguide connection joint, Y type joint and E type elbow, the structure of OMT is compact, and the influence of processing and assembling errors on the electrical performance is reduced. After testing the actual machining of the OMT, the reflection loss of Y type joint output S11 ≤ -22.7dB, the reflection loss of direct arm output ≤ -21.0dB, and the isolation between Y type joint output and direct arm output ≤ -43.4dB. The trend of curve change between actual measure and simulation result is very similar, and this OMT can satisfy the requirements of radio astronomic observation in (30~50) GHz bandwidth. |
| |
| Keywords: | |
|
| 点击此处可从《电子科技大学学报（自然科学版）》浏览原始摘要信息 |
|
点击此处可从《电子科技大学学报（自然科学版）》下载全文 |
|
