radiation impedance
英 [ˌreɪdiˈeɪʃn ɪmˈpiːdns]
美 [ˌreɪdiˈeɪʃn ɪmˈpiːdns]
网络 辐射阻抗; 辐射阻力; 射阻抗
双语例句
- But to circular plate with large surface area, the vibrate modes generated is often so high that there is reverse phases existing, which result in a decrease in radiation impedance, electric-acoustic efficiency and the electric power, as well as poor directivity.
然而对于辐射面积较大的弯曲振动圆盘，一般激励的振动阶数比较高，因此存在弯曲振动的反相区，导致换能器的辐射阻抗下降，电声效率和声功率降低以及指向性变差等问题。 - Then we introduce the basic theories of array antennas, which include the radiation characteristics of arrays, principal parameters, feed mode, impedance matching network and power dividers.
然后简单介绍了天线阵列基本理论，包括天线阵列辐射特性和主要参数、馈电形式、阻抗匹配网络和功率分配器。 - The radiation impedance and the energy partition among wave fields generated by a normal force strip radiator on isotropic solid surface
固体表面法向力条源的辐射阻抗及各种波型的能量分布 - Radiation and Mutual Impedance of Linear Antennas in a Rectangular Waveguide
矩形波导中线天线的辐射和互阻抗 - Then the discrete calculation method ( DCM) which is applied to regular components is presented to some complex components of engine cover parts, and the proposed method is a hybrid method comprising both vibration measurement and calculation of radiation impedance.
然后将用于测量简单构件声辐射系数的离散计算法应用于具有复杂结构的内燃机表面振动部件中，这一方法由振动测量和阻抗计算2部分组成。 - In this solution an additional impedance caused by the stiffeners is added to the coupled vibration equation. As a result, the vibration and sound radiation of shell are dependent on the mechanical impedance of shell, the radiation sound impedance and the additional impedance.
其中肋骨的作用表现为在无肋的耦合振动方程中增加附加阻抗，因此壳体的振动和声辐射由壳体的机械阻抗、流体的辐射声阻抗和肋骨的附加阻抗所决定。 - And the analytic calculation method of the self radiation impedance and mutual radiation impedance of the transducer array is studied.
还研究了基阵中各阵元自辐射阻抗与互辐射阻抗的计算方法。 - In the BEM model, the radiation impedance boundary condition at air intake surface is used and the results demonstrate that it is superior to the traditional pressure release boundary.
本文中空气入口边界采用辐射阻抗边界，优于传统的将入口边界压力当成零的软压力边界。 - The way of feed, characteristic of radiation, impedance characteristic of the microstrip patch antenna according as the basic theory of the microstrip patch antenna ( Vivaldi antenna). A 8-12GHz 、 double-face 、 tapered slot antenna of the microstrip is designed.
从微带缝隙天线的基本原理出发，对微带缝隙天线的馈电方法，辐射性能，阻抗特性进行了分析，设计了一个8-12GHz的双面指数渐变开槽微带天线（vivaldi天线）。 - Based on the analytical solution of RSJ model with the existence of external radiation, a method for finding voltage response and RF impedance of superconducting weak links is proposed and discussed.
本文讨论用外辐射RSJ模型的解析解求超导弱连接的电压响应和RF阻抗的一种方法。 - Starting with radio wave propagation mechanism, the indoor depolarization phenomenon is analyzed, and the special antenna requirements of WHAN ( wireless home area network) for polarization, radiation and impedance match are researched.
从电波传播机理出发，分析室内电波的退极化现象，研究WHAN对天线的极化、辐射及阻抗匹配特性的特殊要求。 - Influence of Oil Well Parameters on the Radiation Impedance of the Ultrasonic Transducer
油井参数对超声换能器辐射阻抗的影响 - Based on the moment method, a numerical method for calculation of the rectangular cavity crossed-slot antenna is presented. The theoretical results of the radiation characteristics such as input impedance, gain and axial ratio of circular polarization are given, which are validated by experimentation.
基于矩量法分析，本文提出了计算矩形腔十字裂缝天线的数值方法，给出了天线单元的输入阻抗、增益和轴比等辐射特性的数值结果，进行了实验验证。 - In this paper, two different EM numerical methods are applied to analyze the far field radiation properties and the impedance characteristics of the Koch fractal antenna and the Sierpinski carpet fractal microstrip antenna.
本文采用两种不同的电磁数值计算方法分别研究了Koch分形线天线和Sierpinski毯式分形微带天线的辐射特性和输入阻抗特性。 - The electronically reconfigurable antenna can steer its beam 360 with its parameter consistency such as radiation pattern, input impedance, etc, without many RF amplifiers, many phase shifter and complex feed structures.
此天线可在天线的方向图、输入阻抗等参数不变的情况下，使波束在360°范围内变化。 - This paper discusses the radiation efficiency σ_ ( rda) of a complex vibrating body and gives its formulas in terms of the concept of point radiation impedance.
本文讨论了复杂振动物体的辐射效率σ（rad），并根据点辐射阻抗的概念推导了计算公式。 - Finally, applying the current basis function of three-term sinusoidal expansion, the radiation characteristic and input impedance of the vertical and horizontal antennas above lossy ground are analyzed by the method of moments with the variation of frequency, height from the ground and ground parameters.
最后，用矩量法，采用正弦插值基函数，研究地面上方垂直、水平线天线的辐射特性和输入阻抗随着频率、离地高度、地面参数等变化的情况。 - The expression of the mutual radiation impedance has a factor and then the theoretic formula of the array transmit voltage response is gained.
互辐射阻抗的表达式中包含了互辐射因子，根据这个互辐射因子求得了阵的发射电压响应的理论计算公式。 - It was obtained that the radiation impedance of the ultrasonic transducer changes in evidence with the ultrasonic frequency and the sound speed of the well liquid.
当超声波的频率、井液声速变化时，超声换能器辐射阻抗变化比较明显。 - Numerical calculation of radiation impedance of the square piston
方形活塞声源辐射阻抗的数值计算 - In this paper, a new spherical helical antenna which has relatively small volume and high gain is studied. The radiation characteristics and input impedance at two different modes are presented.
研究了一种新型的球面螺旋天线，与传统螺旋天线相比，具有结构紧凑、尺寸小、增益高的特点，分析了两种不同模式下球面螺旋天线的辐射特性和输入阻抗； - The electrical characteristics ( radiation pattern, gain, input impedance, voltage standing wave ratio, etc.) and the variable phase centers of the log-periodic dipole antenna in the free space are analyzed and calculated in detail, taking into account all mutual coupling effect.
采用该方法对自由空间对数周期偶极天线的方向图、增益、输入阻抗和电压驻波比以及等效相位中心等特性进行了详细的分析计算，且计算时考虑了阵中所有偶极子之间的全部互耦。 - Fast Solution to Electromagnetic Radiation and Scattering Problems Using the Moment Method with Impedance Matrix Interpolation
矩量法结合阻抗矩阵插值技术快速求解电磁辐射与散射问题 - The main works and results are as follows: 1. The basic theories of PBG structures and single microstrip patch antenna are studied. Then the radiation characteristic, feed mode and impedance matching of the single microstrip patch antenna are analyzed. 2.
主要内容包括：1、研究了PBG结构和微带单贴片天线的基本原理，分析单贴片天线的辐射特性，馈电形式和匹配特性。 - A series circuit is equivalent to the designed series antenna array, and radiation impedance of each antenna is expressed as an impedance element in the circuit.
该天线阵列采用串联馈电，可以等效为串联电路形式，电路中的各个阻抗元件即为各个天线单元的辐射阻抗。 - Moreover, the relation of different factors to positive temperature-gradient is determined quantitatively. It is proved that height of bottom corner of top plate, solar radiation and change range of daily temperature are main impedance factors.
根据计算研究结果，定量的确定了各影响因素与正温度梯度曲线的关系，证明了梗腋高度、太阳辐射强度和日气温变化的幅值是影响混凝土箱梁正温度梯度的重要因素。 - The numerical analyses of the radiation characteristics of a plasma-column antenna is presented by using the moment method when the operating frequency is greatly lower than the plasma frequency, including current distribution along the plasma column, radiation pattern, input impedance, antenna efficiency and gain.
基于矩量法计算了当等离子体天线工作频率远小于等离子体频率时，密度均匀分布的柱形等离子体天线表面电流分布、辐射方向图、输入阻抗、天线效率以及增益等天线参数。 - The reflection loss curve, radiation patterns, input impedance and axial ratio of the antenna were given.
分析了该天线的反射损耗曲线，辐射方向图，输入阻抗，极化轴比等重要参数。