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一种L波段四脊正交模耦合器
Alternative TitleL-band four-ridge ortho-mode transducer
覃律1; 沈泉1; 马军2; 刘兆明1; 陈卯蒸2; 宁波1; 王凯2; 曹亮2; 刘艳玲2; 李健2; 闫浩2
2019-11-08
Rights Holder中国电子科技集团公司第三十九研究所 ; 中国科学院新疆天文台
Date Available2017-02-15
Country中国
Subtype发明专利
Contribution Rank2
Copyright Date2019-11-08
Abstract

本发明涉及一种L波段四脊正交模耦合器,该正交模耦合器为修正型指数渐变曲线加载脊膜片和同轴激励结构,工作频率1-2GHz,应用于射电望远镜L波段接收机系统。该正交模耦合器由圆波导、四脊波导渐变转换段、四脊圆波导、脊膜片、短路背腔、第一同轴探针和第二同轴探针组成,圆波导口径按最低工作频率设计;四脊波导渐变转换段选用修正型指数渐变型阻抗变换方式,确保四脊圆波导主模到圆波导主模的传输;四脊圆波导内对四脊截面进行倒角修正,确保脊膜片之间不会出现相互干渉的现象;四脊波导同轴转换器选用同轴馈电方式,其短路背腔选用圆锥形设计。该正交模耦合器反射损耗和隔离度的实测与仿真结果基本吻合,可以满足射电天文观测需求。

Other Abstract

The invention relates to an L-band four-ridge ortho-mode transducer. The ortho-mode transducer is a modified index gradually-changing curve loaded with ridge diaphragms and a coaxial excitation structure, the operating frequency is 1-2GHz, and the ortho-mode transducer is applied to a radio telescope L-band receiver system. The ortho-mode transducer is composed of a circular waveguide, a four-ridge waveguide gradually-changing transformation segment, a four-ridge circular waveguide, ridge diaphragms, a short-circuit back cavity, a first coaxial probe and a second coaxial probe, and is characterized in that the diameter of the circular waveguide is designed according to the lowest operating frequency; the four-ridge waveguide gradually-changing transformation segment selects a modified index gradually-changing type impedance transformation mode so as to ensure transmission from a dominant mode of the four-ridge circular waveguide dominant mode to a dominant mode of the circular waveguide; chamfer modification is performed on the four-ridge cross section inside the four-ridge circular waveguide so as to ensure that a phenomenon of mutual interference between the ridge diaphragms does not occur; and a four-ridge waveguide coaxial transformer adopts a coaxial feed mode, and the short-circuit back cavity thereof selects a conical design. Measurement and simulation results of the ortho-mode transducer in reflection loss and isolation are basically identical, and radio astronomical observation requirements can be met.

Patent NumberZL 2016 1 1061092.X
Claim

一种L波段四脊正交模耦合器,其特征在于该正交模耦合器工作频段为1?2GHz,为一款修正指数曲线过渡脊膜片型正交模耦合器,应用于射电望远镜L波段接收机系统,该正交模耦合器由圆波导、四脊波导渐变转换段、四脊圆波导、脊膜片、短路背腔、第一同轴探针和第二同轴探针组成,圆波导(1)与四脊波导渐变转换段(2)的一端接连,四脊波导渐变转换段(2)另一端与四脊圆波导(3)连接,四脊圆波导(3)的另一端与短路背腔(4)连接,脊膜片(5)嵌入在四脊波导渐变转换段(2)和四脊圆波导(3)内部,第一同轴探针(7)穿过脊膜片(5)至四脊圆波导(3)中心处。

ClassificationH01p5/16(2006.01)i
Language中文
Status已授权
Application NumberCN201611061092.X
Open (Notice) NumberCN106410355A
Patent Agent乌鲁木齐中科新兴专利事务所65106
Document Type专利
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1555
Collection射电天文研究室_微波技术实验室
射电天文研究室
Affiliation1.中国电子科技集团公司第三十九研究所
2.中国科学院新疆天文台
Recommended Citation
GB/T 7714
覃律,沈泉,马军,等. 一种L波段四脊正交模耦合器. ZL 2016 1 1061092.X[P]. 2019-11-08.
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