扇面天線 的英文怎麼說
中文拼音 [shānmiàntiānxiàn]
扇面天線
英文
sector antenna-
The drawing room was very large and very lofty ; its four windows looked out upon the garden, from which, on this rainy evening of the close of april, issued a sensation of damp despite the great logs burning on the hearth. the sun never shone down into the room ; in the daytime it was dimly lit up by a faint greenish light, but at night, when the lamps and the chandelier were burning, it looked merely a serious old chamber with its massive mahogany first empire furniture, its hangings and chair coverings of yellow velvet, stamped with a large design
客廳又大又高，有四扇窗戶朝向花園，現在已是四月底了，天氣多雨，雖然壁爐里燃著大塊劈材，大家仍然感到花園里有一股濕氣襲來白天，淡綠色的光線把房間里照得若明若暗但是，到了夜晚，臺燈和吊燈都點亮后，這間客廳里卻顯出一派莊嚴氣氛，陳設有拿破崙時代式樣的笨重桃花心木傢具，有黃絲絨的帷幔和椅套，上面印著光滑如緞的大圖案。Abstract : according to the continuative condition of the tangential fields on the slot aperture which is the inclined narrow - slot on the broadwall of a sectoral waveguide, the moment method is used to calculate the magnetic current coefficient and distribution. then the scattering field, the scattering parameter and the equivalent impedance are obtained. leting only the te11 dominant mode propagates in the waveguide, the scattering parameters and the normalized equivalent series impedance in the x - band are computed. the basis disigned the slot antenna and the slot array is offered
文摘:根據縫隙口面切向場的連續條件，採用解析數值法矩量法，對扇面波導寬壁上窄的斜縫進行了計算，解得了磁流系數及其分佈，並得到散射場、等效散射參量及等效阻抗等重要參數.假定波導中僅有te11主模傳輸，在x波段計算了散射參量和歸一化等效串聯阻抗，給出計算結果，為縫隙天線和縫隙陣列設計提供了依據Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results
文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比：電性能相當；波導管結構更加簡單，容易加工，便於安裝.文中給出圓突-矩形波導中主模場，圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣，縫隙電壓相位為同相分佈，輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖，理論與實驗相吻合Simulation and design of bow - tie antenna by using fdtd
對平面扇形偶極子天線的模擬與設計分享友人