天线

LI Ming,SHI Shouxia(No.25 Institute of the Second Research Academy,Beijing,100854,China)Abstract:It deduces that the equivalent damping ratio and torsion pendulum which is the main performance parameter of the torque feedback rate gyro is related to the gain and time constant of the head of meter.

速率陀螺仪，在姿态稳定系统中有广泛的应用，主要目的是敏感载体的角速度，通过执行机构，实现对载体的控制和稳定，在位标器上应用陀螺仪的目的是测量天线在惯性空间的转率，实现天线稳定的伺服控制。

The main beam of a high gain antenna array is usually very narrow. To make the correct measurement, it must be ensured that the antenna array stands still against the rotation of a swivel table, which may lead to a measurement error.

高增益的阵列天线，其主波瓣非常的窄，所以量测时必须确保天线不会因为量测转台的转动，而导致误差产生。

It is placed on the swivel table in the anechoic chamber in order to connect the signal part of both the K-connector and the antenna array. When the swivel table is driven by a motor, it will not be vacillating and staggering. Therefore, we can reduce the error of our measurement.

此夹具的弁酮陛G协助K-Connector的信号线能顺利与天线的信号线接触，且当马达带动转盘上的天线而不至於摇瞻ㄘw，故可使得量测上的误差降到最小。

For the properties of self-similarity and space-filling, fractal antenna, since it's born, has made breakthrough in realizing multi-frequency and miniaturization.

分形天线以其结构上的自相似和空间填充性，使得天线工程在多波段与小型化方面有了突破性的进展。

Several such tapered slot antennas were arranged radially to form a circle, and a group of PINs was put at their feed lines. With the proper sequence switch of PINs, these tapered slot antennas can be constructed into an equivalent omnidirectional antenna.

将几个这样的渐变缝隙天线以放射状构成一圈，并在它们的馈线上引入一组PIN开关，以适当的时序控制PIN开关依次切换，可构成一种等效的全向天线。

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

Dickey博士的橡胶外壳的天线，可以通过伸展天线本身来调谐。

These two series switches are separately connected to two different antennas for selecting one of the antennas in order to route the signals in that signal path.

这两个串联开关分别地连接到两个不同天线以选择该天线之一，以便将那一信号路径中的信号路由。

To do so, we are drawing on our experience designing and manufacturing more than 150,000 mobile satellite antennas as well as our groundbreaking low-profile satellite TV antenna technology.

要做到这一点，我们正在利用我们的经验，设计和制造多十五点○○万移动卫星天线以及我们开创性的低姿态卫星电视天线技术。

The antenna can be used as a conventional roof rack for storing luggage and non-flammable items.

这是因为其它天线的天调都是位于天线与电台之间，对信号造成衰减。

The Miyun metre-wave aperture synthesis radioteleseope, working at frequency of 232 MHz, consists of: an E-W array of 28 elements each of 9 m aperture. 192 baselines are effected with a full coverage of U-V plane (Fig. 2). The longest baseline is 1,164 m, This instrument is designed for source survey and detection of peculiar source in north declinations.

密云米波综合孔径射电望远镜工作在232MHz，由28面直径9米的东-西天线阵组成，天线阵全长1164米，u-v平面覆盖完整，适于进行北赤纬天区射电源普查及特殊源搜索。2×12小时观测得&热噪音限制&灵敏度0.05Jy，综合方向束3′。8×3′。8cscδ，视场8°×8°，可以在两年以内完成δ≥+30°天区的普查，并开展选区监测。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。