查询词典 antennas

The key for phased array antennas with good functions is the use of controllable phase shifters.

其中可控数字移相器的使用，是相控阵天线优越性能实现的关键，但由此引入的相位量化误差，严重影响了相控阵天线的波束指向精度。

Furthermore, we find that for MIMO systems with constant number of scatterers, increasing number of antennas cannot linearly increase the capacity.

更进一步的说，我们发现了对於一个具有固定数目的散射体的多重天线系统，增加天线的数目并不能使得容量呈现线性的增加。

We've had repeaters linking to other repeaters, in the past using purpose built radio links with directional antennas.

我们已经让中继器连接到其他中继器，在过去使用的目的是为了建立无线电与定向天线连接。

Chelton Avionics group comprises 47 companies based in UK, US, Canada, France, Sweden, Austria and South Africa, and focuses on the design and manufacture of antennas, military and civil audio and radio systems, composites and radomes, microwave technology, search and rescue, homeland security equipment,electronic flight systems, network enabled communications equipment and the repair and overhaul of electronic equipment.

Chelton航空电子集团由位于英国、美国、加拿大、法国、瑞典、澳大利亚和南非的47家公司组成，致力于天线、军用和民用声频和无线电系统、复合材料和整流罩、微波技术、搜索救援、国内安全设备、电子飞行系统、网络通讯设备的设计和生产以及电子设备的维护和翻修。

A number of retractable masts are carried inside the sail including periscopes, radar antennas, radio and satellite communications, and navigation masts.

许多的可缩回桅杆装在帆罩内包括潜望镜、雷达天线、无线电、卫星通信和导航。

This fact at the start excludes some antennas as efficient feeds for SAT TV offset parabolas.

这实际就把一些做为卫星电视偏馈抛物面天线的高效馈源排除在外了。

Our ability to develop RF antennas about the size of a quarter, combined with our fast PayPass-certified chip and software, leads the way for new small form factors….

我们有能力开发射频天线约四分之一大小、再加上我们快速paypass认证芯片和软件，一马当先小新形式的因素：：。

It has a control unit, radio cabinets, antennas, a power plant, and data terminals.

它有一个控制单元，电台机柜，天线，一电厂，和数据终端。

Intelligence transmitting in base station was also discussed, and so on. 2、We can improve system performance and increase capacity by using smart antennas.

从理论上分析了在CDMA基站应用智能天线技术对系统容量的改善程度，并提出利用智能天线的择向性因子作为衡量的指标，系统容量与择向性因子成正比。

Using the method of Green's function, the coupling between conformal antennas is analyzed. The mutual coupling between the E plane and the H plane are calculated, and the effect of the curvature and space between to the mutual coupling are discussed.

本文利用格林函数法分析了微带天线阵元之间的互耦效应，得到了矩形微带单元阵元之间E面、H面的互耦结果，并讨论了圆柱曲率半径和阵元的间距对阵元之间互耦的影响。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48