共振天線 的英文怎麼說
中文拼音 [gòngzhèntiānxiàn]
共振天線
英文
resonant antenna-
A new waveguide made of changing a wide wall of a rectangular waveguide to a uniform curved wall is called conformal waveguide. a kind of expression of approximate solution for domain mode of the new waveguide, including symmetric, unsymmetric arc, parabolic arch, hyperbolic arch, elliptic arch, etc., is constructed by using boundary condition of mental waveguide, variational method and boundary element method. by using the equivalence principle, an approximate calculating formula for equivalent resonant conductance of a narrow longitudinal halfwavelength slot cut in the curved wall of the unsymmetric arcrectangular waveguide is derived, and the result is shown. although this solution is approximate, it can solve the problem in designing the slotted antenna of such conformal waveguide
把矩形波導一個寬面外突成均勻曲面構成的新波導統稱為共形波導.利用金屬波導邊界條件、變分法、邊界元素法構造這種新波導中主模場的一種近似解表達式，包括曲面橫截線為對稱、非對稱圓弧，拋物線弧，雙曲線弧，橢圓弧等.然後根據等效原理，推導非對稱圓弧矩形波導曲面上窄的縱向半波長縫隙的等效諧振電導的近似計算公式，給出計算曲線.這種解雖然是近似的，但卻能解決這類共形波導縫隙天線的工程設計This kind of reflectors possessed the advantages of the traditional reflectors and the phased arrays. the reflectarray is made up of lots of resonant elements. when the feed radiate the reflectarray, the reflected wave could be focused at some desired direction owing to the adjustment of each element
這種陣列反射天線具有反射天線和陣列天線共同的優勢，它的基本結構就是由大量的無源諧振單元組成的單屏或多屏周期性陣列，然後由一個饋源照射這個天線，通過調節介質板上每個單元對于入射波的散射相位，使得反射波在特定的方向實現同相位，發射出方向性極強的筆形波束。The directivity coefficient of the phased array antenna has been generalized and discussed. according to the formulations of microstrip antenna design theory, planar and cylindrical microstrip patch cell has been analyzed. we can conclude that the cylindrical microstrip patch cell has the performance of high gain, low thickness, high resonant frequency, uniform directivity diagram, and easy fabrication on missile body, so it is a good choice
本文根據微帶天線設計理論，分析了平面和柱面兩種微帶貼片單元，其中柱面微帶貼片單元增益高、厚度小、諧振頻率高、方向圖均勻，且較易加工製作在彈體上，適合在相控陣天線中做共形輻射單元。Then three types of mpbg resonant antennas with cavities similar to a laser ' s cavity are designed
在此基礎上，採用類似激光腔的結構，設計了三種類型的mpbg共振天線。In the dissertation, we introduce three types of mpbg resonant antennas, the patch antenna with a new pbg cover, the patch antenna with a new pmc substrate, the patch antenna with a pmc substrate and a pbg cover, the antenna with a meta - material cover
本論文發展了三種光子晶體共振天線、新型pbg覆層貼片天線、新型pmc基底貼片天線、具有pmc基底和pbg覆層的新型貼片天線、異向介質覆層新型貼片天線。Antenna span, for one, is dictated by the type of broadcast it captures ; an incoming radio - frequency wave resonates best when an antenna ' s length is one half that of the wavelength
原因之一是，天線的全長取決于要擷取的播送類型；如果天線的長度是波長的一半，就能讓傳來的無線電頻率波達到最佳共振。分享友人