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IntroductionA triangular patch antenna's major weaknessis its intrinsic narrow bandwidth.Some techniqueshave been suggested for widening its bandwidthsuch as the employmentof a thicker substrate witha coaxial feed[1] ,which will limit the achievablebandwidth due to the increased inductance of thelonger probe. Recently a novel feeding approachemploying an L- shaped probe has been devel-oped[2 ] ,butno numerical analysis has been provid-ed.Physically this L- shaped probe introduces a ca-pacitan… 相似文献
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一、企业基本情况 郑州宇通客车股份有限公司是交通部在河南省唯一定点生产公路客车的专业厂,是全国14家大客车生产骨干企业之一。自1963年起从事公路客车生产,至今已有30多年的 相似文献
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车辆装备维修保养工作是确保车辆装备技术、战术水平,提高部队战斗力、保障力的重要途径。作为一支重点汽车部队,驻扎在青藏高原的兰州军区联勤部某汽车团车辆装备工作始终围绕遂行多样化军事任务需要,瞄准实战,系统抓建,整体推进, 相似文献
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