The Design and Optimization of Dual-slot corrugated horn antenna on Ka-band-3

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1、TheDesignandOptimizationofDual-slotcorrugatedhornantennaonKa-bandAbstract-AnovelcorrugatedhornantennaonKa-bandisdesigned.Itcombinesbyaxialslotsandstraightslots.Basedonthestructure,thesizeoftheantennacanbeminiaturizedbyreducingthenumberofaxialslotsandstraightslots.ThemodelistestedinthesoftwareH

2、FSSandthesimulationresultshowsthattheantennanotonlyhasgoodradiationcharacteristicandVoltageStandingWaveRatio(VSWR)performance,thesizeandthestructureoftheantennaalso加上hasbeenoptimized.Keywords-Ka-band;Corrugatedhornantennas;Axialslot;Straightslot;Dual-slot.I.INTRODUCTIONWiththerapiddevelopmento

3、f(AerospaceMeasurementandcontrol)spaceflight test controland deep-spaceexploration,corrugatedhornantennahasaverygoodperformance,suchasgoodradiationperformanceandreturnlossperformance,smallercross-polarizationandsmallersidelobeslevel.Corrugatedhornantennaiswidelyusedinradarsurveying,satelliteco

4、mmunications,targetdetectionandotherfields.Itisakindofgoldantennaamongallthefeedantennas[1].Reference[2]describesthedevelopmentofcorrugatedhornantennaintheradioastronomy,nationalsecurityandsatellitecommunications.Reference[3]describestheapplicationofcorrugatedhornantennainthemicrowaveremotesen

5、singandreflectorantenna.Atraditionalcorrugatedhornantennacanbedividedintosmallangleantennaandlargeangleantenna.Theslotsinasmallanglecorrugatedhornantennaare per-pendicular totheantennaaxis.Theslotsinalargeanglecorrugatedhornantennaareperpendicular tothehornwall.Inthispaper,firstly，加上anovelsmal

6、langlecorrugatedhornantennaworksintheKa-bandisdesignedatfirst.去掉Ithasdual-slotstructurewithaxialslotsandstraightslots.Basedontheantennastructure,thesizeisoptimizedbyreducingthenumberofaxialslotsandstraightslots.ThemodelistestedinthesoftwareHFSSandtheresultshowsthattheantennahasagoodperformance

7、andaminiaturizationstructure.II.WORKINGPRINCIPLEThecorrugatedhornantennastructurecanbeseeninthewallsoftheconicalhorncarvingagroupofring-slot.Theelectricfieldlinesintheantennaoutputsurfaceisstraight.TheseelectricfieldlinesdoesDonotresult