查询词典 in-line antenna

By using the quantum jump approach, we show that the efficiency depends intimately on the quantum interference among states in which the excitation is localized on individual sites in the antenna.

补充：通常情况下要在室温下实现宏观量子相干很难，但考虑到光合反应中电子转移过程的时间在飞秒量级，在超短时间内维持室温宏观量子相干或许是可行的。

With the miniature intelligent antenna array adopted by the invention, the ultrahigh frequency portable reader can improve reading and writing distance, reading and writing range and reading and writing accuracy, leading a system to sense labels in different antenna covering areas, enlarge the covering range of the system and effectively improve the ratio of the distance and power consumption.

本发明采用小型智能天线阵列，能够提高读写距离、范围和准确性，使系统能够感知不同天线覆盖区域的标签，增大系统覆盖范围，有效提高了距离和功耗的比值。

Genetic algorithm is used to design the sectored array antenna in smart antenna system in this paper.

本文使用遗传算法设计了智能天线系统前端的扇区天线阵列。

Genetic algorithm is used to design the sectored array antenna in smart antenna system in this paper.

本文使用遗传算法设计了智能天线系统前端扇区天线阵列。

In the antenna device for the mobile phone, at least one sub-antenna device is installed lengthwise facing the sliding module and is electrically connected to or separated from the body housing, slidingly approaching or moving away from the body housing along with the sliding module, and at least one connection unit electrically connects the sub-antenna device to the body housing for signal transmission between the sub-antenna device and the body housing.

在用于移动电话中的天线装置中，至少一个副天线装置沿着纵向面对滑动壳安装，用于电连接到机身壳或者从机身壳电分离，与滑动模块一起滑动地接近机身壳或者从机身壳远离，并且至少一个连接单元将副天线装置电连接到机身壳，以便于副天线装置和机身壳之间的信号传输。

The results show that the influence for the antenna pattern due to truncation of the missile body is very small,thus the truncating handle for the missile body is entirely possible in the antenna measurements.

结果表明，弹体截断对弹载天线辐射特性的影响很小，完全可以在弹载天线的测量中对弹体进行截断处理。

The adaptive array technology in array antenna is mature after development of 40 years and is mainly used in military communication.

阵列天线技术中的自适应天线技术，经过40年的发展已经非常成熟，但主要应用于军事通信中。

In chapter one, the function and components of RF block in smart antenna are discussed, and the block schematic of RF circuit in smart antenna system at 3.95GHz and 1.9GHz is analyzed.

首先介绍了智能天线研究背景、发展历史，以及射频前端在智能天线中的作用和组成。

Firstly, we simulate the signal received by OTHR in each antenna according to the real working condition, and save the signal datum in file. Secondly, we develop the signal processing program and the visual users interface. Thirdly, we utilize the simulation system to analyze Linear Frequency Modulated Continuous Wave OTHR system and Binary Phase-coded Continuous Wave OTHR system. Finally we compare the performance in suppression of interference of these two kinds of OTHR system.We achieve two aims in this simulation system.

本文首先根据OTHR的工作环境模拟OTHR各个阵元接收的回波信号，并将其保存为数据文件；然后根据OTHR的系统结构，编写信号处理程序，并给出可视化用户界面；最后利用OTHR仿真系统，对二相编码连续波和线性调频连续波这两种发射波形的OTHR作抗干扰性能分析。

In the antenna system, a dual-reflector antenna with two paraboloids is fed by the beam waveguide feeding system formed by three reflectors, realizing quick scanning of the beam.

该天线利用由三面反射镜组成的波束波导对一个由两个抛物面镜组成的双反射面天线进行馈电，实现了波束的快速扫描。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。