電容性天線 的英文怎麼說
中文拼音 [diànróngxìngtiānxiàn]
電容性天線
英文
capacity antenna-
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該保潔車有七大特點： 1 、該車外型設計美觀大方，操作簡單靈活，明凈小巧的駕駛室免除了環衛工人在雨雪等惡劣天氣作業時的煩惱； 2 、佳鹿電動保潔車變速箱是我公司的專利產品，特點是拉重貨，輕松爬坡而且省電，延長電瓶的使用壽命； 3 、佳鹿電動保潔車后橋雙輪制動，是我公司的專利產品，特點是結構簡單，操作方便，維修容易，制動性能好； 4 、佳鹿電動保潔車超低的垃圾箱符合人體工程學的高度，使環衛工人能輕松地裝卸，倒車時具有良好的視線，減少事故的發生，安全系數高； 5 、佳鹿電動保潔車採用先進的電動推桿作為自卸動力，減輕了環衛工人的勞動強度，特點是故障少功率大，免維護； 6 、佳鹿電動保潔車整車採用鋼化玻璃，前進倒車都有良好的視線，不易劃傷，保證環衛工人的安全； 7 、佳鹿電動保潔車外部採用鋼板，內部採用玻璃鋼內膽，外部特點：鉸鏈在鋼板上不易松動，經常自卸不變形，經得起碰撞，內部採用玻璃鋼內膽，不生銹、不腐蝕，磨損后內膽可以更換，維護成本低。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In some military application such as aviation 、 space flight 、 missile 、 radar and so on, the 10kv isolation voltage is needed, on the basis of it, linearity, capacity of driving load capacitance and reliability are presented
同時，在航空航天、導彈、雷達等軍事應用上，對光電耦合器提出了10kv以上的隔離電壓的要求，在此基礎上，對線性度、驅動容性負載的能力以及可靠性都有很高的要求。The antenna design is based on using capacitive loads and slits on two crossed narrow patches with via fed - through feed system, which can reduce the size of the antenna, improve the isolation between two ports and keep considerable bandwidth respectively
通過電容性加載減小整個天線的尺寸，通過在天線上開槽來增加天線埠之間的隔離度，採用viafed - through的饋電方式。This technique combines the edge - based finite - element method with physical optics ( po ) and physical theory of diffraction ( ptd ). the hybrid technique is applied to compute the scattering fields from the electrically large bodies with cracks and cavities on their surfaces. it is also used to analyze the scattering characteristics of microstrip antennas residing in a cavity mounted on metal objects with finite sizes
本文採用edge - basedfem為基本方法，結合物理光學法（ po ） 、物理繞射理論（ ptd ） 、邊界積分方程（ bi ） 、區域分解技術（ ddm ）和完全匹配層（ pml ）吸收邊界條件等求解方法構成的混合方法，對電磁散射和輻射問題進行了研究，主要包括以下內容：提出了一種edge - basedfem與物理光學方法和物理繞射理論相結合的混合方法? fem po - ptd方法，並將該混合方法應用於帶有腔體或槽縫的電大尺寸導體目標的電磁散射特性分析和位於有限導體目標上的背腔式微帶貼片天線的電磁散射特性分析。In this dissertation, the calculation of the electromagnetic radiation and the electric magnetic compatibility of the conducting body with the wire antenna attachment is discussed, which is based on the classic moment method technology while using the visual c + + as the programming environment and the programming tool
本文以經典的矩量法為理論基礎，以microsoftvisualc + +為主要編程環境和編程工具，計算插有細天線的金屬導體的電磁輻射和電磁兼容特性。The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias
通過計算得知，使傳感器相位偏置為/ 2 ，減小電極間距，提高電光重疊因子，減小器件插入損耗，採用合適的分段數，增加電極長度，增大光功率，降低激光的波長，減小相對強度噪聲，減小接收帶寬，對提高靈敏度的效果是非常明顯的。而減小天線長度，降低調制器電容，電極分段，都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率，採用較低的光學偏置，都可以增大線性動態范圍。The joining device of 7 / 16 ( l29 ) type has whorl to join the organization, its characteristic is the power, the capacity is large, voltage little to stay bob, three steps it pays to be superior to transfer performance, kind airtight have, suitable for radio, tv aerial system, jump line join and microwave communication system present cable connection spend mainly
型連接器具有螺紋連接機構，其特點是功率、容量大，電壓駐波比小，三階交調性能優越，氣密性好，可供廣播、電視天線系統、跳線連接以及微波通訊系統主饋電纜連接用。Space systems - safety and compatibility of materials - determination of flammability of electrical - wire insulation and accessory materials
航天系統.材料的安全和兼容性.電線絕緣和附屬材料易燃性的測定This dissertation is mainly focused on the key technologies of smart antenna for mobile station : ( 1 ) the electrically small antennas with two ports, ( 2 ) the performance evaluation of smart antenna for mobile station, and ( 3 ) the retrodirective antenna with multi - feed ports
本文的工作主要圍繞移動臺智能天線的關鍵技術進行，包括三方面研究內容： （ 1 ）適用於移動臺的兩埠電小天線； （ 2 ）移動臺智能天線的性能評估； （ 3 ）多饋電一體化方向回溯天線。It adopts both modern multimedia and computer, the latest technology in most advanced field of 21st centery. it has so much editing function. this changes people ' s concept of editing in turn of time and overcomes the fault of bad quality in video multi - tapes compounding and image copying
非線性編輯系統是在電視的數字化以及計算機技術在存儲容量、數據處理速度等方面發展到一定階段出現的，它集多項編輯功能於一體，改變人們按時序剪輯素材的傳統概念，克服了錄像帶多版合成、復制圖像質量劣化的缺點，提高了編輯效率，為編輯人員的藝術創作開辟了廣闊的天地。Theory analysis and practical measurements of response characteristics are done about two couplers. from the aspect of capacitive coupling, the frequency response characteristics of two sensors are assessed in terms of square wave response. at the same time, the amplitude - frequency relationship characteristics are calculated on the base of antenna model
對所研製的兩種內置傳感器響應特性進行理論分析與實際測量：從電容耦合原理角度採用方波響應分析傳感器及整個測試系統的頻率響應特性，從天線模型角度分析幅頻響應特性，局部放電實測結果也驗證了設計的傳感器的性能優良。The electromagnetic compatibility prediction model of the transmitter, emission antenna, receiving antenna and receiver has been built respectively
採用通用模型分別對發射機、發射天線、接收天線和接收機進行了電磁兼容性預測建模。In the areas of radar stealth and anti - stealth technology research, radar target identification, complex antenna system design and modern electric systems ’ emc analysis, we often need to simulate the electromagnetic characteristics of some electric large objects which is composite of complex structure and complex medium
在雷達目標隱身和反隱身技術研究、雷達目標特性識別、復雜天線系統設計、現代電子系統電磁兼容性分析等領域，經常需要對一些具有復雜結構和復雜媒質組成的三維電大尺寸目標作電磁建模。This thesis contributed to the comprehensive study of the finite - difference time - domain ( fdtd ) method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies. the work includes mainly three parts : the study on the performance of pml absorbing boundary condition applied to pseudo low frequency electromagnetic problems ; the validation of the fdtd method with pml absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna, and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies ; the development of an improved alternating direction implicit finite - difference time - domain method
在綜合前人工作基礎上，本文對時域有限差分（ fdtd ）法及其在開關電源輻射電磁場數值計算中的應用進行了系統的分析和研究，其核心內容包括：偽低頻電磁場數值計算中pml吸收邊界條件性能的研究；基於基準問題?電偶極子天線三維輻射電磁場，驗證了本文構造的基於pml吸收邊界條件的三維fdtd法及其計算軟體，並應用於高頻開關電源輻射電磁場的數值分析；提出了一種改進的交替方向隱格式時域有限差分法。分享友人