现代电子技术
現代電子技術
현대전자기술
Modern Electronics Technique
2015年
22期
8-11
,共4页
多焦点抛物面天线设计方法%反射面赋形%馈源位置%加权系数优化
多焦點拋物麵天線設計方法%反射麵賦形%饋源位置%加權繫數優化
다초점포물면천선설계방법%반사면부형%궤원위치%가권계수우화
multi-focal paraboloid antenna design method%shaped reflective surface%feed source position%optimization of weighting coefficient
在国外学者关于多焦点抛物面天线设计思想的基础上,针对多波束天线设计中各馈源位置已知的情况,提出了一种改进的多焦点抛物面天线设计方法.利用其对反射面进行赋形,设计了馈源位于±270 mm,±150 mm,0 mm的五焦点抛物面天线,通过优化基础抛物面加权系数,使得边缘波束与中心波束之间的增益差与标准反射面相比减少了0.76 dBi和0.2 dBi,使得覆盖区域内每个波束的增益趋于平均,并且满足低旁瓣的要求.
在國外學者關于多焦點拋物麵天線設計思想的基礎上,針對多波束天線設計中各饋源位置已知的情況,提齣瞭一種改進的多焦點拋物麵天線設計方法.利用其對反射麵進行賦形,設計瞭饋源位于±270 mm,±150 mm,0 mm的五焦點拋物麵天線,通過優化基礎拋物麵加權繫數,使得邊緣波束與中心波束之間的增益差與標準反射麵相比減少瞭0.76 dBi和0.2 dBi,使得覆蓋區域內每箇波束的增益趨于平均,併且滿足低徬瓣的要求.
재국외학자관우다초점포물면천선설계사상적기출상,침대다파속천선설계중각궤원위치이지적정황,제출료일충개진적다초점포물면천선설계방법.이용기대반사면진행부형,설계료궤원위우±270 mm,±150 mm,0 mm적오초점포물면천선,통과우화기출포물면가권계수,사득변연파속여중심파속지간적증익차여표준반사면상비감소료0.76 dBi화0.2 dBi,사득복개구역내매개파속적증익추우평균,병차만족저방판적요구.
Based on the design philosophy of overseas scholars about multi-focus parabolic reflective surface,in allusion to the known feed source locations in multi-beam antenna design,a design method of improved multi-focus parabolic reflective sur-face is proposed. The five-focal parabolic antenna with the feed source located at ±270 mm,±150 mm,0 mm was designed by means of the method to shape the reflective surface. The gain difference between the edge beam and central beam is reduced by 0.2 dBi and 0.7 6dBi by optimizing the weighting coefficient of the fundamental paraboloid,which makes the gain of each beam in the coverage area average,and meets the requirements of the low side lobe.
