驻波比

调制器在调谐范围内的最大驻波比小于2.20；

The largest standing-wave ratio of the modulator within tuning ranges is less than 2.2 ;

还可快速测量微波源的驻波比和实现对它的匹配。

The method can be used for measuring the voltage standing-wave ratio and tuning match of the microwave signal source quickly .

DSP在核潜艇驻波比检测仪中的应用

The Application of Stationary Wave Ratio Check Device In Nuke

电压驻波比图像在RF电缆制造中的应用

Application of VSWR Images in RF Coaxial Cable Manufacturing

用途：适用于铁路，RFID驻波比性能好，封闭式处理，防水防腐能力强。

Application : Suitable for railway , VSWR at good performance , RFID system , closed processing , anti-water ability .

经过ADS仿真，增益满足要求，输入驻波比很好，但输出驻波比较差，在输出需要增加一个隔离器。

Through ADS simulation , the gain index can meet the requirement , the input VSWR was good while the output VSWR not idea .

介绍时域有限差分（FDTD）法计算准八木天线驻波比的算法实现方法。

The Finite Difference Time Domain ( FDTD ) method was used to calculate the Voltage Standing Wave Ratio ( VSWR ) of a quasi-Yagi antenna .

信号支路的驻波比是P≤1.6。为了进一步改善混频器特性，我们将电桥做成圆形，并且将其两输出臂之一增长了四分之一波长。

VSWR of the signal branch ρ ≤ 1.6 . In order to further improve the characteristics of the mixers , the bridge is made in circular form , and one of the two output arms is lengthened by one quarter wavelength .

Xc波段双脊喇叭驻波比优化设计

Optimum design of voltage standing - wave ratio for Xc - Band double - ridged horn

输入输出电压驻波比（VSWR）均小于2；

Both the input and output voltage standing wave ratios ( VSWR ) are less than 2 within the bandwidth .

本文根据参考文献（28）从理论上推导了通过增加周期性开槽口的方法来扩展频带宽度，用MATLAB编程绘出了增加的开槽口在不同位置时对应的泄漏同轴电缆驻波比的变化曲线。

Based on the Reference 28 , the article derive from the theory to expand bandwidth by adding periodic slots , use MATLAB program and plot the VSWR curves when increased slots in different positions of the LCX .

研制了宽带和窄带两种超高频外置天线传感器，两种传感器增益均大于1，驻波比在其有效带宽范围内均小于2，均能用于GIS局部放电超高频检测。

The two ultra-high frequency outer antenna sensors are made with wide band and narrow band respectively . The gain of two sensors is both greater than 1 and VSWR of the sensors is less than 2 in effective bandwidth range .

无源阵与LNA相连接后，不但提高了天线的有源增益，而且改善了驻波比带宽和隔离度。

As the passive array is interconnected with the LNA , the active gain is enhanced and the VSWR as well as the isolation characteristics are improved .

对某型号空间行波管的耦合结构进行了理论分析和实用的结构设计，利用HFSS软件对设计的耦合结构的驻波比进行了模拟优化，并通过冷测实验进行了比较验证。

The structure of the couplers for space TWT are designed according to the analyses with theory , and the structure is simulated by HFSS in this paper .

测量结果表明，天线的阻抗带宽（电压驻波比，VSWR≤2）和圆极化带宽（轴比AR≤3dB）分别达到18.8%和12.3%。

The impedance bandwidth for VSWR ≤ 2 and circular polarization bandwidth for axial ratio AR ≤( 3 dB ) reaches 18.8 % and 12.3 % , respectively .

给出其在两个主平面&E平面与H平面上的辐射方向图和波束场分布特性的测试结果以及电压驻波比VSWR的测量结果；同时给出频带和旁瓣特性。

The measurement results of patterns , field distribution characteristics of wave beam in two principal planes-H plane and E plane and the voltage standing wave ratio VSWR , and the properties of bandwidth and sidelobe are given .

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。

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 .

通过仿真表明天线的远场辐射方向图、驻波比VSWR均满足要求，并且分形特有的尺寸缩减性实现了超宽带天线的小型化。

The simulation results show the far-field antenna radiation patterns . The standing wave ratio VSWR requirements are met , and the unique fractal characteristics reduce the size of the ultra-wide band antenna .

通过仿真计算得到了天线的电压驻波比（VSWR）、端口隔离度、辐射方向图以及交叉极化电平等参数，仿真结果符合设计指标要求。

In HFSS , the antenna index such as VSWR , port isolation , radiation pattern and cross polarization are obtained . The simulated result proves that this antenna is in accord with requirement .

在L波段，一个五路的分配器/合成器效率可达88%，带宽为25%，驻波比小于1.2。实验结果和理论分析计算相一致。

It 's efficiency and bandwidth are up to 88 % and 25 % respectively , with a VSWR of less than 1.2.The experimental results agree with the theoretical analysis .

这种TE（21）模激励技术和与主模TE（11）模相位差的调整方法，对馈源的电压驻波比几乎没有影响。

It is shown that either the technique for generating TE_ ( 21 ) mode or the method for adjusting the phase difference between the primary mode TE_ ( 11 ) and TE_ ( 21 ) has almost no effect on the VSWR of the feed .

其次研究了宽角有限长双锥天线的宽带特性，解析地求出了宽角有限长双锥天线的输入阻抗和电压驻波比等参数，并通过CST微波工作室的仿真验证了结果的正确性。

Secondly , the broadband characteristics of the wide-angle biconical antenna have been researched and parameters such as input impedance and VSWR are resolved . Simulations are carried out by CST microwave studio to demonstrate validity of the results .

在3237.5GHz频率范围内，变换损耗低于0.6dB，杂模（H（01）~ο）幅度低于15dB，输入驻波比低于1.2。

In the frequency range from 32 to 37.5 GHz , the conversion loss is less than 0.6 dB , the amplitude of unwanted mode ( H01 ) less than - 15 dB and the V. S. W. E less than 1.2 .

测试结果表明，通过调节端口驻波比可以较大改善混频器的变频损耗，使混频器的变频损耗最大减少10dB左右。

Measured results show that adjusting ports SWR of mixer may improve conversion less of mixer . The biggest conversion frequency loss is reduced about by 10 dB .

对于电磁仿真数值计算方法，选用了基于微分方程的有限元方法，并采用高频电磁场计算的专用软件HFSS进行建模，对结构尺寸优化仿真，得到了仿真的驻波比及性能插损曲线。

Choose the finite element method based on differential equations , and use HFSS which is the special software for the high-frequency electromagnetic field to be calculated and simulated . Then I obtained in the simulation waveform and field distribution .

利用微波仿真软件HFSS进行仿真，结果表明天线2个端口的驻波比小于2的相对带宽均达到12.5%；在工作频带内其双端口隔离度S21高于48dB；

The HFSS results show that the bandwidths of VSWR < 2 reaches 12.5 % in both ports , and the isolation between the excitation ports is greater than 48 dB over this frequency range .

在1GHz频率下，电路噪声为1.59dB，功率增益为14.3dB，输入驻波比为1.6，输出驻波比为2.0。

The MMIC is measured to have a noise figure of 1.59 dB , a power gain of 14.3 dB , and an input and output VSWR of 1.6 and 2.0 at 1 GHz .

电压驻波比VSWR<1.5，带宽为120MHz。

The bandwidth of VSWR ( Voltage Standing Wave Ratio ) < 1.5 is 120 MHz and of AR ( Axial Ratio ) < 3 dB is 27 MHz .

获得的实测结果为：中心频率为10GHz，电压驻波比小于2的带宽为33.85%，圆极化轴比小于3dB的带宽为22.4%。

The experimental results show that the frequency bandwidth is 22 . 4 % for a 3-dB axial ratio criterion and is 33.85 % for a VSWR < 2 criterion at the central frequency 10 GHz .

本文主要介绍了8754A网络分析仪对西德凯士林公司UHF天线的驻波比经进行测试分析的结果，并根据结果分析了影响天线驻波比的因素。

With the help of 8754A Network analyser , the author of this paper tests and analyses the UHF Antenna VSWR of KATHREIN of Germany . Based on the result of analysis , the present paper tries to explore some factors which offect the antenna VSWR .