查询词典 antenna resistanc

ABSTRACT The design theory of cylindrically conformal slotted-waveguide array antenna fed by curved waveguides is studied.

本文研究用弯波导馈电的圆柱共形波导缝隙阵列天线的设计理论。

It is important to study the antenna that can directly radiate cylindrically symmetric modes, which are generated by many high power microwave sources.

许多高功率微波源产生的微波模式都是圆波导轴对称模，因此研究轴对称模式的天线辐射技术具有重要意义。

In this chapter proposed the repetition iteration algorithm through the training sequence and its the corresponding array data-in repetition useenlarges the TD-SCDMA channel in the iteration step, may approach theoptimum result under the short data length, take the LMS algorithm asthe example simulation result indicated this method is feasible, mayeffectively improve the TD-SCDMA system smart antenna the performance.

本章中提出的重复迭代算法通过把TD-SCDMA信道中训练序列及其对应阵列输入数据重复使用加大迭代步数，可以在短的数据长度下逼近最佳结果，以LMS算法为例的仿真结果表明该方法是可行的，可以有效改善TD-SCDMA系统智能天线的性能。

In this paper, a improved method of DCA is proposed. In TD-SCDMA, method combined joint detection and smart antenna is applied.

针对TD-SCDMA系统的这一特点，提出了一种对原有动态信道分配方法的改进方法。

In a technology day event, we introduced an antenna supplier and a demodulator manufacturer to the TV chipmaker.

在该技术日活动中，我们介绍该天线供应商和解调器制造商给电视芯片制造商。

At last the antenna depolarization and its compensation method are discussed.

最后讨论了实际系统中，天线的去极化作用及其补偿方法。

The circular polarization at the lower resonant frequency of the dual-frequency antenna can be achieved by setting a perturbation segment at an appropriate location in the patch element, and placing the feed point on the diagonal axis.

在较低的谐振频率处圆极化的获得是通过在天线辐射单元上适当地设置摄动元素，并将馈电点移到辐射单元的对角线上。

One of Dr Dickey's rubber-coated antennas, though, can be tuned by stretching the antenna itself.

Dickey博士发布的一种橡胶封装的天线可以通过拉伸天线自身来进行调谐。

A bi-static dioptric optical antenna is designed and evaluated with optical design software ZEMAX. This design eliminates backscatter from transmitter to receiver and simplifies the beam pointing and tracking subsystem.

光学天线是FSO系统的重要组成部分，本文设计了收发分离的折射式光学天线，并用光学设计软件ZEMAX进行模拟和评价。

Furthermore, a size reduction rate of 50% compared with a general dipole antenna is realized.

此外，天线高度和常规偶极子天线相比减小了约50%。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。