
[電訊] 矩形波導
The waveguide-coaxial rotary joint consists of the rectangular waveguide and the coaxial waveguide, is one of the key components in the radar system.
波導同軸旋轉鉸鍊是由矩形波導同軸波導構成,是雷達系統中的關鍵元件。
Microwave reflection characteristics of an open_ended rectangular waveguide probe in direct contact with a bilayered biological tissue is analyzed by the FDTD method.
采用FDTD法分析開口矩形波導探頭直接與人體表層接觸時的微波反射特性及皮下腫瘤的存在對其反射特性的影響。
The results of an actual X-band rectangular waveguide phase controlled antenna array are given.
本文給出X波段矩形波導相控陣天線的研制結果。
But wrinkling, distortion, tension crack etc are easily produced during the rotary draw bending process, especially the wrinkling seriously influence the quality of rectangular waveguide.
但在薄壁矩形管繞彎成形過程中極易産生失穩起皺、截面畸變、拉裂等缺陷;特别是失穩起皺,嚴重地影響着矩形波導管的彎曲成形質量。
In this paper we analyse the dispersion relations in a rectangular waveguide partially loaded with E-plane and H-plane ***lectric slabs in terms of transverse resonance technique.
本文用橫向諧振法分析在矩形波導中E面和H面上部分填充介質片時的色散特性。
A formula for evaluating the equivalent shunt admittance of an inclined slot in the narrow wall of a rectangular waveguide is presented.
本文給出一個矩形波導窄邊斜縫等值并聯導納的計算公式。
As an example, formulas derived in this paper are used to calculate E and H in rectangular waveguide under the TE_(10) mode. The results are in agreement with those from other methods.
用在矩形波導中部小天線激勵的TE_(10)波檢驗了所得式,各場最計算結果與常規的分離變最法所得相符。
The substrate integrated waveguide borrow advantages of both of the rectangular waveguide and the microstrip, such as: high Q, low loss just like rectangular waveguide;
它綜合了矩形波導和微帶線的一系列優點:和傳統的矩形波導一樣集成波導具有較高的品質因數和很小的輻射損耗;
The numerical experiment on the three-dimensional WR-3 rectangular waveguide partially filled with ***lectric material verifies the reliability of the algorithm for computing scattering parameters.
通過對部分填充介質的三維WR-3矩形波導的數值實驗,證明了該散射參量計算方法的可靠性。
Computations and analysis were done for two typical structures of the rectangular waveguide grating, the shallow grating and the deep grating, and reasonable results were obtained.
然後通過數值實例具體分析了矩形栅的兩種典型結構:淺槽栅和深槽栅。
This paper mainly stu***s the design and the shaped-beam technology of traveling wave antenna of rectangular waveguide with inclined slot on the narrow wall.
本文主要就波導窄邊縫隙行波陣天線的設計及其波束賦形技術進行研究。
The result shows that a UWB signal may distort while propagating in a rectangular waveguide, and the longer the distance, the greater the distortion.
研究表明超寬帶信號在矩型波導中傳播時會出現失真,而且傳播距離越遠,失真越大。
Numerical calculations for the rectangular waveguide verify the validity of our FEM program.
對矩形波導的計算驗證了我們的有限元程式是有效的。
The double-plane step discontinuity in rectangular waveguide is analyzed utilizing mode-matching method.
應用模式匹配法分析了矩形波導中雙面階梯的不連續性。
Compare to the normal rectangular waveguide, ridge waveguide has the character of broader bandwidth, smaller dimension, lower equivalent characteristic impedance, etc.
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。
The analysis of a broad wall centered-inclined slot coupler of rectangular waveguide extends also application fields of the MPSTD.
同時,對矩形波導寬壁中心斜縫耦合器的分析也拓展了MPSTD算法的應用領域。
The radiation and coupling of linear antennas in a rectangular waveguide are discussed by means of dyadic Green's function, field transformation and reaction concept.
本文采用并矢格林函數,場量變換和反應概念讨論了矩形波導中線天線的輻射和互耦合,給出了場強和互阻抗的普遍公式。
A typical structure of microwave filter, i. e. rectangular waveguide inserted with cylindrical ***lectric resonators has been developed.
本文分析了一種新型實用的微波濾波器結構:在矩形波導中插入圓柱形介質諧振器。
Design of rectangular waveguide terminal matched load based on multilayer perceptron neural network (MLPNN) is presented.
讨論了多層感知器神經網絡(MLPNN)在矩形波導終端匹配短負載設計中的應用。
The results show that the cutoff frequency of the rectangular waveguide tube with the same equivalent radius is far greater than that of the cylindrical tube.
理論研究結果表明:對于同樣等效直徑的矩形諧振管,其截止頻率遠大于圓形諧振波導管的截止頻率;
The design and experimental results of the rectangular waveguide TE_(10). TEM-mode hybrid arc presented in this paper.
本文給出了矩形波導TE_(10)、TEM模電橋的設計值與實驗結果。
The equivalent parameters of the longitudinal or inclined narrow slots in a rectangular waveguide are effected by H00 mode, and are demonstrated through some typical examples.
本文讨論矩形波導中H_(00)模對波導壁上縫隙耦合與輻射特性等效參數的影響問題。
矩形波導(Rectangular Waveguide)是一種在微波工程中廣泛應用的電磁波傳輸結構,其核心特征在于其橫截面為矩形(通常為長方形)的空心金屬管。它利用金屬壁的反射作用來引導電磁波在内部空腔中傳播,主要適用于微波及更高頻率(通常從數百MHz到數百GHz)的信號傳輸。以下是其詳細解釋:
物理構造
由高導電金屬(如銅或鋁)制成,内部為真空或填充低損耗介質(如空氣),橫截面呈矩形,長邊為a,短邊為b(a > b)。金屬壁形成理想電導體(PEC)邊界,迫使電場和磁場在邊界處滿足特定條件(如電場切向分量為零)。
傳播模式
電磁波在波導内以特定場分布模式傳播,主要分為:
其中m、n為模式指數(正整數),分别代表場沿寬邊a和窄邊b的駐波半周期數。
截止特性
電磁波僅在頻率高于特定截止頻率(f)時才能傳播。截止頻率由波導尺寸和模式決定:
$$ f_c = frac{c}{2} sqrt{left(frac{m}{a}right) + left(frac{n}{b}right)} $$
c為光速。主模TE(m=1, n=0)具有最低截止頻率,是實際應用中的主導模式。
低損耗傳輸
相較于同軸電纜,金屬壁的歐姆損耗和介質填充損耗更低,尤其適合高頻、大功率場景(如雷達發射機)。
高功率容量
内部中空結構可承受高電場強度,功率容量遠高于同軸傳輸線(參考IEEE微波理論期刊分析)。
電磁屏蔽性
封閉金屬結構提供天然電磁屏蔽,避免信號洩露和外部幹擾。
用于連接天線與發射/接收模塊,傳輸高功率微波脈沖(如機載火控雷達)。
作為饋線網絡連接衛星反射面天線與低噪聲放大器(LNA)。
傳輸射頻能量至加速腔(如歐洲核子研究中心CERN的波導設計)。
作為校準件或測試夾具矢量網絡分析儀(VNA)系統。
(注:因平台限制未提供直接鍊接,建議通過學術數據庫如IEEE Xplore或出版社官網檢索上述文獻。)
“Rectangular waveguide”是電磁學和通信工程中的專業術語,其含義可從構成詞分解理解:
Rectangular(矩形的)
該詞源于拉丁語,由“rectus”(直)和“angulus”(角)組成,特指四個内角均為90度的四邊形結構。在工程中常用于描述具有明确直角邊界的物體(如、4、7、12均指出其數學定義)。
Waveguide(波導)
指用于引導電磁波傳播的空心金屬管或介質結構,通過特定邊界條件限制電磁場的分布(、6、10提到其核心功能是傳輸微波或光波)。
組合定義
矩形波導特指橫截面為矩形的空心金屬管,其内部傳播的電磁波模式(如TE/TM模)由截面尺寸決定。例如标準型號WR-90的截面尺寸為22.86×10.16 mm,常用于X波段(8-12 GHz)信號傳輸(、7、10提到相關應用)。
主要特點:
需注意:非矩形波導(如圓形)適用于不同頻段場景,二者選擇需根據具體工程需求。
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