查询词典 antenna array

Several kinds of antenna applied in an RFID system are introduced, especially focusing on the novel methods to miniaturize their structures.

RFID技术具有可靠性高、保密性强、方便快捷等特点。此外，由于它的数据容量大，并可以对标签数据进行更改和加密，同时能够实现非视距扫描，因此被广泛应用在包装、物流等行业。

The method of moments is used to investigate the resonant characteristics of the antenna.

提出一种新型单极子天线，天线的辐射主体由双弯折线构成，通过矩量法研究天线的谐振特性。

And the design method of the circular monopole antenna is presented.

给出了圆盘单极超宽带天线的设计方法。

In the end,we get a conclusion that the feature of monopole antenna is affected by the size of conductor board to certain extent.

得出了导体板尺寸的大小在一定程度上影响单及天线特性的结论。

An ultra-wideband two-ring monopole antenna is presented in this paper.

本文提出了一种超宽带双环单极天线的设计思想及应用模型。

The tapered line theory in circuit can be applied to the design of the special-shaped monopole antenna in order to obtain better electrical characteristics.

电路中的渐变线理论可以引入到异型单极子天线的设计中，以获得更为良好的电特性。

On the basis of the characteristics of water, in this paper, the monopole and theconical monopole antenna loaded by water are researched by experiment.

在宽带天线技术中，采用宽带匹配网络来对天线进行优化匹配是一项很重要的措施。

Based on these analysis and using GA technique, a double-band monopole antenna for application of GSM/DCS is designed.

基于这种分析以及遗传优化技术，设计了一种可工作在GSM／DCS频段的双带单极子天线。

Then on the basis of former studies, the miniaturization and planar structure of the circular monopole antenna are respectively analyzed and two feasible schemes are presented.

然后在上述研究的基础之上，本课题进一步分析了圆盘单极天线的小型化以及平板化的实现方案。

In order to satisfy the future requirements of fixed broadband wireless Access systems for high data-rate and high frequency efficiency, technical renovation on the physical layer and control layer is demanded. The paper analyzes relevant technologies sUCh as the high spectrum utilization antenna, robust time-delay extension modulation, equalization and encoding, highly efficient multi-address access and adaptive linking.

为了满足未来固定宽带无线接入系统高数据速率传输及高频谱利用率的要求，就需要在物理层和媒体访问控制层进行技术上的革新，所涉及的关键技术包括：高频谱利用率的天线系统、具有时延扩展鲁棒性的调制方式、均衡与编码技术、高效的多址接入技术、自适应链路技术等。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。