查询词典 antenna

A system and method for automatically directing a communication antenna to point to a desired wireless communication transceiver, is presented herein.

这里提出了一种自动引导通信天线指向希望的无线通信收发信机的系统和方法。

In order to reduce the effect of probe errors in near-field antenna measurement, the solutions are proposed as follows: On the one hand, theoretical formula of probe-compensated is derived; on the other hand, drop-shaped probe is designed and near-zone gain, far-field patterns, axial ratio, main lobe width, input impedance, voltage standing-wave ratio, electromagnetic field and current distribution of probe are obtained through the computer simulation.

针对近场测量中的重要误差源之一&探头&的影响，本文提出解决方法：一方面用探头补偿的方法，根据洛仑兹互易定理和微波网络理论对补偿的解析式进行详细推导；另一方面用两种不同的仿真软件求解终端开口矩形波导探头的近场增益、远场方向图、轴比、主瓣宽度、输入阻抗、电压驻波比、电场分布、磁场分布、表面电流分布等特性参数，可实现探头增益的修正。

Drum shape wheel will need agglutinate fabric jacked up, when the antenna exposed to the fabric was jacked up in pressure and thermal effect produced by bonding and shear friction material.

鼓状轮将需要粘合的面料顶起，当触角接触到被顶起的面料时，在压力和热力的共同作用下所产生的摩擦以粘合和剪切面料。1 ^' o+ x5 |/ N e* G

The antenna resonance is realized by adjusting the position of the short-pin,the slot width and relative distance of E-shaped.

通过调整短路针的位置，E形槽的宽度和相对位置实现谐振。

Basic theory, math model and predict step of the algorithm was introduced. E-shaped dualfrequency microstrip antenna by using PSO-PTS hybrid algorithm was simulated.

仿真结果表明，该方法可有效地缩小PSO算法搜索区域，保证了解的单一性，提高了运算速度和解的精度。

The antenna represented by a 5-ports circuit, in which the parasitic bars and the coupling between two E-shaped patches are abstracted by equivalent capacitances.

整个天线用5端口电路来表示，其中无源条带以及大、小&E&形贴片间的耦合用等效电容替代，取得了较好的精度。

Microstrip antennas are a new type of antenna which were developed in 1970's.

微带天线是20 世纪70 年代初期研制成功的一种新型天线。

Antenna measurement has always been a key topic in the field of antennas.

天线测量一直是天线研制领域内的一个关键课题。

The rendezvous was on one side of the lot, and in the middle of the group was a vehicle with the biggest antenna of all, a thickly bumpered, sticker-plastered, red-flagged Chinese-made four-by-four belonging to the president of the Target club, Zhao Xiangjie.

这次会合在这个停车点的一边，位于车队中间是一辆越野车队，车上有所有车辆中最大号的天线、巨大的保险杠、大大的海报、中国制造的4X4红旗，他属于目标俱乐部的经理赵向杰。

FRP pultruded profiles include many shapes of profiles, grating,plant, antenna cover, cable tray, doors and windows,sporting goods,tool handle etc. They possess the characteristics of light weight, high strength, color fresh and beautiful , colourfast ,anti-corrosion, electric insulation, easy to design, good integrated benefit etc.

拉挤玻璃钢产品：包括型材、格栅、扁条、天线罩、门窗、体育运动用品、电缆桥架、工具手柄等，具有轻质高强、颜色美观大方、不褪色、防腐蚀、绝缘、可设计性强、综合效益好等突出的特点，广泛应用于建筑工程、化工防腐、能源开采、电工绝缘、交通运输、文体娱乐等领域。

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％。