bandwidth of antenna 中文意思是什麼

bandwidth of antenna 解釋
天線的帶寬
  • bandwidth : （帶寬）：電纜，鏈路或系統傳輸數據的能力。
  • of : OF ＝Old French 古法語。
  • antenna : n. （pl. -nae , antennas）1. 【動物；動物學】觸角。2. 【無線電】天線〈英國常用 aerial〉。
  1. To broaden the antenna ' s impedance bandwidth and its radiation pattern, a novel printed dipole antenna with reflecting structure of v - shaped ground plane was proposed

    摘要為了擴展天線的阻抗帶寬和改善天線的方向性，提出一種採用了地平面反射結構的新型印製偶極子天線。
  2. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。
  3. Compare to the normal rectangular waveguide, ridge waveguide has the character of broader bandwidth, smaller dimension, lower equivalent characteristic impedance, etc. because of these merits, it is used more and more widely, such as broadband ridge waveguide filter, broadband direct coupler, diplexer, frequency converter, phase shifter, ridge waveguide slot antenna array, and so on

    與普通矩形波導相比，脊波導具有工作頻帶寬、尺寸小、等效特性阻抗低等特點。由於脊波導本身的特點，使其得到了越來越多的應用，例如寬帶脊波導濾波器、寬帶定向耦合器、雙工器、變頻器、移相器、脊波導縫隙天線陣等等。
  4. A patch antenna with etched holes on the ground plane is also studied. the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment. the results show that the surface waves are suppressed greatly, the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane

    全面地研究了地面腐蝕周期圓孔結構的電磁晶體貼片天線在基波頻率處的性能，用fdtd方法並結合pml邊界處理技術對該天線所取得的研究結果顯示，本文設計的地面腐蝕型電磁晶體結構抑制了貼片天線中的表面波，增加了天線的帶寬，並有效地削弱了旁瓣，使天線的e面方向圖上110和260方向的兩個旁瓣被削弱了10db 。
  5. 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。
  6. To meet the bandwidth requirements, a two - layer electromagnetically coupled rectangular microstrip antenna was introduced to the system. the influence of the inset position and the air thickness between the two layers on the impedance, resonant frequency, as well as the bandwidth was investigated

    為使天線達到系統要求，本文設計了兩層電磁耦合矩形微帶天線，分析了影響天線性能的微帶饋線插入深度，微帶饋線與貼片間距以及空氣層厚度這三個參數。
  7. A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )

    設計了一種基底鉆周期圓孔結構的電磁（光子）晶體貼片天線，用fdtd方法並結合pml吸收邊界條件對該天線進行了研究，結果表明本文所設計的基底鉆孔型電磁晶體貼片天線取得了多方面的性能改善，與普通天線相比，基底中的表面波受到很大抑制，天線的帶寬增加，遠場方向圖上天線的旁瓣和背瓣被明顯削弱，向前輻射的增益由原來的12db增加到26db ，增加了14db ，比文獻上報道的gonzalo等人的研究結果提高了4db 。
  8. Based on the idea of improving the frequency characteristic of the two parameters above, a novel method of improving the bandwidth of the slot array antenna is presented in this paper, which uses a ridged waveguide instead of a rectangular waveguide as the radiating waveguide

    本文以改善這兩個參數的頻率特性為出發點，提出了一種展寬波導裂縫天線帶寬的新方法，即用脊波導代替矩形波導作為輻射波導。
  9. In the purpose of enhance the circular polarization, the sub - array have used a phase transfer circuit which made each patch have 90deg phase difference in turn. matching branches are added to the full array to enhance the bandwidth of the antenna

    在4單元天線子陣的設計過程中採用了移相電路，使4單元間的相位依次相差90 ，展寬了天線的圓極化軸比帶寬。
  10. Usually the frequency bandwidth of microstrip patch antenna is relatively narrow. however, it can be effectively broadened with the employment of the micro - electro - mechanism systems technique to fabricate microstrip antenna with multilayer dielectric substrates and patch

    通常微帶貼片天線的頻帶較窄，而利用微電子機械繫統（ mems ）技術製作具有多層介質和貼片結構的微帶天線，可以有效地擴展天線的帶寬。
  11. Anti - jamming capability of interferometer direction finder with multi channel receiver is analyzed and studied. measures for control co - channel jamming are given : reduce intererence strength by antenna character, change gate level of receiver, alter df bandwidth, make use of the pause function of display and a type of filter

    提出了抗同波干擾的若干措施：利用天線的方向圖抑制干擾信號、改變接收信號的門限電平、改變測向帶寬、利用屏幕顯示的暫存功能、倒譜同態濾波方法等。
  12. The present invent ion utilizes the top loading technique and the smooth tapering technique to create the design of a compact and built - in antenna which will provide a planar antenna structure with broad bandwidth and high radiation efficiency

    饋入傳輸線的寬度大致與漸變帶段的底邊同寬，且頂邊與漸變帶段的底邊密接，而底邊藕接至頻電路。
  13. Secondly, because the band of the traditional microstrip antenna is very narrow. and the isolation can ’ t meet the requirement when the coaxial - line feeding is used to realize the dual polarization. the following work lays heavy stress on analysis of the way of widening the bandwidth and developing the isolation of the antenna

    傳統的微帶天線帶寬較窄，採用普通同軸線饋電實現雙極化的時候，隔離度不能夠滿足天線的要求，所以在接下來工作中，重點分析了微帶天線頻帶展寬和隔離度改善的方法。
  14. A 1 / 10 - scale model quasi - fractal rcl - loaded monopole antenna was fabricated and measured, which has a bandwidth ratio of about 10 : 1, with vswr less than 3. 0, calculated system gain greater than - 9. 4db and the efficiency above 14 %

    加入寬帶匹配網路后，對其10 : 1的縮比模型天線進行了測試，在全頻率段內駐波系數小於3 ，理論增益大於- 9 . 4db ，效率大於14 % 。
  15. In this paper, an micro - strip antenna based on novel electromagnetic ( photon ) structure is designed, numerical experiments show that such kind of structure can decrease the surface - wave caused by thick substrate, thus the bandwidth and gain of antenna are improved evidently

    本文設計了一種加入新型電磁（光子）晶體結構的微帶天線，通過數值模擬，證明它消除了大量由厚介質帶來的表面波效應，從而明顯增加了天線的帶寬和增益。
  16. As far as the wide slot antenna is concerned, a broad s11 - 10db frequency bandwidth of 158 % and an operating frequency band of 1. 9 ~ 16. 25 ghz are produced by applying this method to it

    對寬槽天線而言，應用這種方法得到了阻抗帶寬為158 %的超寬帶寬槽天線，工作頻率為1 . 9 ~ 16 . 25ghz 。
  17. Through the design the dc feed network, input matching network for the ne900175 gaas fet and analysis the stabilization, power gain, bandwidth of the power amplifier we get the power amplifier is stability, the power gain is 11. 967db and the bandwidth is 300mhz. microstrip antenna has a narrow bandwidth, in this design antenna ' s bandwidth is 100mhz. antenna is the not only the load of the power amplifier, but also as the filter connecting to the output of the power amplifier

    E類功放的pae相對a類、 b類、 ab類的功率放大器類型而言比較高，在50 ? 70 。分析了e類功放的工作過程后，以ne900175的gaas場效應管作為e類功放電路的開關，進行了外圍電路的設計，包括直流偏置電路、輸入匹配網路的設計，功放的穩定性、帶寬、增益的分析。該功放增益最大達到11 . 4db ，帶寬為320mhz 。
  18. The result of this paper brings forward a new idea for improving the bandwidth of the slot array antenna

    本文的研究成果為展寬波導裂縫天線的帶寬提供了一個新的思路。
  19. The frequency characteristic of the admittance of radiating slot and the waveguide wavelength of radiating waveguide is the main factor that influences the bandwidth of the slot array antenna

    摘要輻射縫隙導納及波導導內波長的頻率特性，是影響裂縫天線帶寬的主要因素。
  20. The thesis deeply analyzes the factors which affect the bandwidth of microstrip antenna and studies the influence of coaxial probe which is applied to feed to microstrip antenna

    深入分析了影響微帶天線帶寬的因素，研究了同軸探針饋電微帶天線的同軸探針對微帶天線帶寬的影響。
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