查询词典 antenna

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%。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。