矩形頻帶 的英文怎麼說
中文拼音 [jǔxíngbīndài]
矩形頻帶
英文
rectangular band-
Based on these theories, this paper discusses the method of design of the rectangular gunn integrated active microstrip patch antenna in detail. the size of the active antenna and the location of the device in the antenna is obtained at the specified operation frequency
根據這些理論，詳細討論了一種集成gunn二極體的矩形有源微帶貼片天線的設計，得到了在給定的工作頻率下的有源天線尺寸和有源器件的位置。This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。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。Cold - formed rectangular tube - steel column for architecture structure is formed by roll cold - winding forming process and hf longitudinal seam weld
建築結構用冷彎矩形鋼管是採用冷軋或熱軋鋼帶，經連續輥式冷彎及高頻直縫焊接生產形成的矩形鋼管。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。In the paper, the transition of ka band rectangular waveguide to micro strip probe and the back - to - back structure are designed. the measurement results indicated the low insert loss and low return loss from 35 ghz to 40 ghz
本文設計了ka波段矩形波導到微帶探針過渡結構以及背對背結構，測試結果表明，在35 40ghz頻率范圍內，其插入損耗和回波損耗都比較小。Rectangular connectors for frequencies below 3 mhz ; part 2 : detail specification for a range of connectors, with assessed quality, with trapezoidal shaped metal shells and round contacts ; fixed solder contact types
頻率低於3mhz的矩形連接器.第2部分:帶質量評定的帶梯形金屬套和圓形接觸件的連接器系列的詳細規范.固定的的釬焊接型Rectangular connectors for frequencies below 3 mhz - part 2 : detail specification for a range of connectors, with assessed quality, with trapezoidal shaped metal shells and round contacts - fixed solder contact types ; amendment 1
頻率低於3mhz的矩形連接器.第2部分:帶質量評定的帶梯形金屬套和圓形接觸件的連接器系列的詳細規范.固定的釬焊接型.補充件1Firstly a microstrip - fed microstrip patch antenna has been emulated and validated. on the base of this, the multi - band property of sierpinski equilateral triangle and squareness microstrip fractal patch antennas are carefully studied, and the effect of antenna ' s property by the permittivity, the size of patch, the order of the fractal and the decrease of fractal patches is depicted ; secondly on the base of analysis and comparison of performance of microstrip - fed semicircle and rectangle double - band microstrip patch antennas, warranty of dimension curtailment is offered ; finally expansion of band of those antennas above is discussed
在此基礎上，著重分析了微帶線耦合饋電的sierpinski等邊三角形微帶分形貼片天線以及sierpinski方形微帶分形貼片天線的多頻特性，給出了介質參數、貼片尺寸、分形的階數以及減少分形貼片數對微帶線耦合饋電的sierpinki等邊三角和sierpinski方形微帶分形貼片天線特性的影響；其次基於微帶線耦合饋電的半圓雙頻微帶貼片天線和矩形雙頻微帶貼片天線的性能分析和比較，提供了尺寸縮減的依據；最後對以上天線的頻帶擴展進行了探論。The main content is position matrix is set to record the location of wavelet coefficients, scanning the important wavelet coefficients first by using ordered quad - tree, and encoding the sign by using run length coding as well
主要思想是：設立位置矩陣記錄子帶的位置信息，對高頻子帶內小波系數進行掃描排序形成有序四叉樹，對輸出的符號串採取行程編碼。Based on the transfer - matrix method, the general expressions of equivalent four - terminal network parameters of varying section torsional horn are derived, the relations between frequency equation and both the rotational velocity amplification and that of the surface tangential velocity of stepped type torsional ultrasonic horn with transitional section of cosine - like type are obtained
摘要基於傳遞矩陣演算法，推導出了變截面桿扭轉振動時等效四端網路參量的一般表達式，研究了帶類餘弦過渡段階梯形變幅桿扭轉振動頻率方程與角速度放大倍數及外表面切向速度放大倍數等的關系。The research on the rf characteristics of the conductor - centered helical groove sws. ( a ) in the " cold " system, we found that the changing of depth of the groove has no distinct effects on the phase velocity at the lower frequency region ; but with the increasing of the frequency, the phase velocity and bandwidth are reduced slightly, the structure is more dispersive and the coupling impedance is enhanced
對具有中心導體軸的矩形螺旋槽慢波系統的高頻特性進行了理論研究： （ 1 ）在冷系統中的研究結果表明：頻率較低時，槽深的改變對相速的影響不是很大，隨著頻率的增大相速略有減小，同時帶寬也有所減小，色散變得稍強，耦合阻抗增大。For the luggage conveyer system runs smoothly and steadily, we synthetically analyzed the characteristic of the belt machine ' s running, starting and applying the brake. we decide to use the current transducer 6se92 of siemens with high function u if control. this transducer ' s functions of adding or decreasing speed with s form and torque promoting can magnificently solve the belt machine ' s vibration in the time of starting and brake and make the belt machine smoothly working with vary goods
為了實現行李輸送系統平滑穩定的運行，我們綜合分析了皮帶機運行特性，及起、制動時的特性，決定採用具有高功能型u f控制的通用變頻器6se92 （西門子） ，此變頻器的s形加減速功能和轉矩提升功能，能很好的解決皮帶機起制動時的振動及不同帶載量時的穩速運行。Rectangular connectors for frequencies below 3 mhz ; part 3 : detail specification for a range of connectors with trapezoidal shaped metal sheels and round contacts ; removable crimp contact types with closed crimp barrels, rear insertion rear extraction
頻率低於3mhz的矩形連接器.第3部分:梯形金屬殼和圓觸點連接器范圍的詳細規范.帶閉式圓筒，后插入后抽取的可拆卸的壓扁觸點型系列詳細規范Connectors for use in d. c., low - frequency analogue and digital high - speed data applications - rectangular connectors with assessed quality - detail specification for a range of shielded connectors with trapezoidal - shaped shells and non - removable ribbon contacts on a 1, 27 mm double row
直流低頻模擬及數字高速數據應用系統用連接器.有質量評定的矩形連接器.帶有1 . 27mm雙排不可拆卸矩形接觸件及梯形外殼的屏蔽系列連接器詳細規范Connectors for use in d. c., low frequency analogue and digital high speed data applications - part 3 - 100 : rectangular connectors with assessed quality - detail specification for a range of shielded connectors with trapezoidal - shaped shells and non - removable ribbon contacts on a 1, 27 mm double row
直流低頻模擬及高速數據數字系統用的已經過質量評定的連接器.第3 - 100部分:矩形連接器.帶有1 . 27mm雙低不可拆卸矩形觸點及梯形外殼的屏蔽連接器作用范圍的詳細規范Connectors for use in d. c., low frequencey analogue and digital high speed data applications - part 3 - 100 : rectangular connectors with assessed quality - detail specification for a range of shielded connectors with trapezoidal - shaped shells and non - removable ribbon contacts on a 1, 27 mm double row
直流低頻模擬設備和數字高速數據應用設備用連接器.第3 - 100部分:經質量評估的矩形連接器.連接在1 . 27 mm雙列帶上的帶不等邊四邊形外殼和固定帶狀觸點屏蔽連接器范圍的詳細規范Connectors with assessed quality, for use in d. c. low - frequency analogue and in digital high - speed data applications. part 3 : rectangular connectors. section 101 : detail specification for a range of shielded connectors with trapezoidal shaped shells and non - removable rectangular contacts on a 1, 27 mm x 2, 54 mm centre - line
經質量評估的直流低頻模擬和數字高速數據設備用連接器.第3部分:矩形連接器.第101節:連接在1 . 27 mm x 2 . 54 mm中心線上的帶不等邊四邊形外殼或固定矩形觸點屏蔽連接器范圍的詳細規范Miniature and wide - band rectangular microstrip antenna on an organic magnetic substrate
寬頻帶矩形微帶天線4. the wideband active signal detector is presented and simulation is given. the result proves this detector is efficient, and that non - rectangle enveloped hfm signal is the optimal detection signal
給出了寬帶主動信號檢測器的形式，並進行了模擬研究，證明寬帶檢測器的有效性，同時驗證了非矩形包絡雙曲調頻信號為最佳檢測信號。分享友人