Helical antenna has not only almost identical to the resistive input impedance in broad bandwidth, but also works by the end of super-gain front lobed map in the same frequency band.
螺旋天线不仅在宽频带上具有近乎一致的电阻性输入阻抗，而且在同样的频带上按超增益端射阵的波瓣图工作。
Numerical results show the effects of the lossy medium and antenna parameters on input impedance, which could be used in designing cavity-backed slot antenna.
本文的数值结果分别给出了有耗介质及天线结构参数对输入阻抗的影响，为天线设计提供了依据。
The electric characteristic parameters of this novel sleeve antenna are calculated, including the input impedance, voltage standing wave ratio (VSWR), horizontal gain and radiation pattern.
研究了这种新型套筒天线的输入阻抗、电压驻波比（VSWR）、增益及辐射方向图等电特性。
Balanced micro-strip line is utilized as feed line, printed dipole is adopted as radiation element, and a matching network is employed for tuning the input impedance of the antenna.
该天线采用平衡微带线作馈线，以印刷振子作为辐射单元，末端采用匹配电路对其输入阻抗进行匹配。
Showing that frequency is little related to input impedance of the mutual-complementary antenna, antenna of this type is a ultra wide band one.
通过论证自互补结构天线的输入阻抗基本与频率无关的角度证明了该天线具有超宽带特性。
The axial cavum measurement device was used to simulate the input impedance of the body antenna based on the theory of long line.
本文基于长线理论用同轴线测量装置模拟弹体天线的输入阻抗值，使引信在同轴线测量装置中其工作状态和自由空间一样。
Based on the measured input impedance characteristics or the resonance parameters of a micro-strip antenna the dielectric constant can be obtained with the help of a computer.
借助计算机程序，可由微带天线的输入阻抗特性或谐振参数直接求出介电常数。
When using frequency sweep meter to measure the input impedance of antenna, the balanced - unbalanced transformer must be connected between coaxial transmission line and antenna.
用扫频仪测量天线的输入阻抗时，在同轴传输线与天线间应按平衡—不平衡变换器。
The analysis shows that the TVA is a pure resistive antenna with a higher input impedance than that of corresponding EVA.
分析表明，三角板天线是一种纯阻性天线，其输入阻抗值比较大。
Combination of ladder approach method and equivalent circuit model of slot antenna had been used to analyze its input impedance. Finally, GTD had been used to calculate the radiation pattern.
利用阶梯近似方法结合缝隙天线电路模型分析其输入阻抗，最后采用GTD方法计算该种天线的辐射方向图。
The process of adjusting impedance so that the input impedance of an antenna equals or approximates the characteristic impedance of its transmission line over a specified range of frequencies.
天线匹配指定频率范围内，调整阻抗使得天线的输入阻抗等于或大致等于其发射线路特性阻抗的过程。
The impedance matching network of changeable load and wide-belt is required because the input impedance of spiral antenna changes with frequency.
由于该天线的输入阻抗随频率而变化，需要用一个宽带变负载阻抗匹配网络来实现天线与电台之间的匹配。
In this paper, a simple and practical electrically small planar unipole antenna is presented, and the dependences of input impedance on dimension of the antenna and frequency are investigated.
本文提出一种简单而实用的平面结构的单极子电小天线，研究输入阻抗随天线外形尺寸和频率的变化规律。
Numerical results show the effects of the lossy medium and antenna parameters on input impedance, which could be used in DE...
本文的数值结果分别给出了有耗介质及天线结构参数对输入阻抗的影响，为天线设计提供了依据。
This type of antenna measurements can be translated into measuring the input impedance of two-port network.
而这类天线可以等效成相参激励下二端口网络来进行输入阻抗的测量。
The small electrical antenna is characteristic of a low input impedance and a low efficiency.
传统的电小天线其特点是低输入电阻和低效率。
The proper optimization of the gain and input impedance of an antenna is discussed in the view of practice.
从实用的角度出发，讨论了对天线增益和输入阻抗的合理优化问题。
For convenience of AIA design, the AIA design method based on the input impedance wide-band model of patch antenna is used in this paper.
为了方便设计有源集成天线，本文提出了基于微带天线输入阻抗宽带模型的有源集成天线设计方法。
For convenience of AIA design, the AIA design method based on the input impedance wide-band model of patch antenna is used in this paper.
为了方便设计有源集成天线，本文提出了基于微带天线输入阻抗宽带模型的有源集成天线设计方法。
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