A Suggested Arrangement of Grooves for Enhancing the Return Loss Performance Characteristics of Submillimeter-Wave Corrugated Horns

Matsunaga Mayumi; Matsunaga Toshiaki

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A Suggested Arrangement of Grooves for Enhancing the Return Loss Performance Characteristics of Submillimeter-Wave Corrugated Horns

机译：为增强亚毫米波波纹形喇叭的回波损耗性能特性而建议的凹槽布置

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Anewarrangementofgroovesbywhichthereturnlossperformancecharacteristicsofsubmillimeter-wavecorrugatedhornshavebeengreatlyimprovedispresented.Corrugatedhornsequippedwithgroovesarrangedasperthewayintroducedinthispapereachhavebeenfoundtobecapableofradiatingafieldwithreturnlossesof$$-$$28orlessdB,whilemaintainingmaximumcross-polarizationlevelsof$$-$$45orlessdBwithinafrequencyrangeof385GHzto500GHz.Thisisaperformancelevelgreaterthanthegoalsetforfeedhornsforradiotelescopes.Thereasonforthisenhancementofthereturnlossesisbecausethepartoftenreferredtoasthea€?mode-transformingsectiona€?hasbeenformeddifferently,thatistosaythegroovesarearrangeddifferentlyinthispartthanintheconventionalmode-transformingsection.Specifically,thenumberofgroovesprovidedinthisnewmode-transformingsectionhasbeendecreasedvis-??-visthatofthoseintheconventionalmode-transformingsection,andthesegroovesarearrangedwiththeirdepthsvariedinaccordancewiththeanglesofthesectiona€?sflares.Further,thestructureofeachgroovehasbeensosimplifiedthatitisaparallelogramincrosssection,andthepartoutsidethemode-transformingsectionisprovidedwithgroovesthatareinuniformdepthandwidthbeingarrangedataregularinterval.Despitethesimplicityofthegrooves,thereturnlossesofsubmillimeter-wavecorrugatedhornshavebeengreatlyenhancedwhiletheircross-polarradiationfieldsaremaintainedatlowlevels.

机译：Anewarrangementofgroovesbywhichthereturnlossperformancecharacteristicsofsubmillimeter-wavecorrugatedhornshavebeengreatlyimprovedispresented.Corrugatedhornsequippedwithgroovesarrangedasperthewayintroducedinthispapereachhavebeenfoundtobecapableofradiatingafieldwithreturnlossesof $$ - $$ 28orlessdB，whilemaintainingmaximumcross-polarizationlevelsof $$ - $$ 45orlessdBwithinafrequencyrangeof385GHzto500GHz.Thisisaperformancelevelgreaterthanthegoalsetforfeedhornsforradiotelescopes.Thereasonforthisenhancementofthereturnlossesisbecausethepartoftenreferredtoasthea€模式transformingsectiona€hasbeenformeddifferently，thatistosaythegroovesarearrangeddifferentlyinthispartthanintheconventionalmode-transformingsection.Specifically，thenumberofgroovesprovidedinthisnewmode-transformingsectionhasbeendecreasedvis - ？？？ - visthatofthoseintheconventionalmode-transformingsection ，并且这些槽根据其软截面的角度变化而变化。进一步，每个槽的结构都简化了该平行四边形横截面和模式转换部分外的凹槽在深度和宽度上均等，且间隔均匀，数据间隔规律。尽管凹槽简单，但仍可提高亚毫米波波纹形喇叭的回波损耗，同时保持交叉极化水平较低。

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《PASJ: Publications of the Astronomical Society of Japan》 |2007年第3期|共页
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Matsunaga Mayumi; Matsunaga Toshiaki;
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1. A suggested arrangement of grooves for enhancing the return loss performance characteristics of submillimeter-wave corrugated horns [J] . Matsunaga M, Matsunaga T PASJ: Publications of the Astronomical Society of Japan . 2007,第3期

机译：为增强亚毫米波波纹形喇叭的回波损耗性能特性而建议的凹槽布置
2. An investigation of corrugated groove conical horns with small flare angle [J] . Wang SJ, Zhang L, Yang HS International Journal of Infrared and Millimeter Waves . 2007,第5期

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7. A Suggested Arrangement of Grooves for Enhancing the Return Loss Performance Characteristics of Submillimeter-Wave Corrugated Horns [O] . Mayumi Matsunaga, Toshiaki Matsunaga 2007

机译：提高凹槽的建议布置，用于提高杂波波纹角的回波损耗性能特征

A Suggested Arrangement of Grooves for Enhancing the Return Loss Performance Characteristics of Submillimeter-Wave Corrugated Horns

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