The antenna switch unit is selectively coupled to the first antenna or the second antenna.
天线切换单元选择性地耦接于第一天线或第二 天线。
The testing head further comprises a second antenna for communicating with the first antenna;
测试头还包括一第二天线，用以与第一天线通信；
An antenna switching system for switching between a first antenna and a second antenna, where a gain of the first antenna is different from a gain of the second antenna, is disclosed.
本发明提供了一种用于在第一天线以及第二天线之间作切换的天线切换系统，其中第一天线的增益不同于第二天线的增益。
Compared with the first kind of way, DTH way satellite launch big power, can use smaller antenna, average household can use.
与第一种方式相比，DTH方式卫星发射功率大，可用较小的天线接收，普通家庭即可使用。
In Chapter Two, first of all, the basic conceptions of folded slot antenna are generalized, and the design principles and means are analyzed.
在第二章中，首先介绍了折叠槽天线的基本概念，对折叠槽天线的设计原理和方法做了分析。
First, the basic principle of location estimation and the operation principle of smart antenna as the key technology of 3g were introduced.
首先介绍了移动通信中常用的位置估计算法的基本原理及第三代移动通信采用的关键技术智能天线的基本工作原理和特性。
The researchers said the women feel pressure, first will emotional antenna reach others, looking for a loyal listener-this is a woman express love and trust way.
研究人员表示，感受到压力的女性，首先会将情感的触角伸向他人，寻找一个忠实的倾听者——这是女人表达爱和信赖的方式。
The far field diffractive pattern calculating formula for diffraction antenna with continuous phase structure is derived by current distribution method in antenna theory for the first time.
应用天线理论中的电流分布法，首次推导了具有连续位相结构的反射式毫米波衍射天线的远场衍射图计算公式。
In order to apply the slot antenna to the Radio Frequency Identification (RFID) tag, a new method to design the slot antenna for RFID tag is first proposed.
为了将缝隙天线应用于射频识别标签中，提出了一种新的设计标签用缝隙天线的方法。
A first resonance frequency is determined by the length of the rectangular microstrip antenna.
第一谐振频率由矩形微带天线的长度所决定。
The first part covers the structure of antenna and reaction centers, the mechanism of oxygen evolution, and the molecular mechanism of ATP synthesis.
第一部分包括天线和反应中心的结构、放氧机理和ATP合成的分子机理；
First this paper introduced the fundamental principle of antenna, such as dipole, fundamental electrical parameter, principle of antenna array, theory of space propagation, etc.
本文首先介绍了对称振子，天线基本电参数，天线阵原理，空间波传播理论等天线基本原理。
This Agreement does not include service of any transmission line, antenna, tower or tower lighting, unless such work is described on the first page of this Agreement.
如果合同首页没有说明，本合同将不包括馈线、天线、发射塔或发射塔照明装置等维修。
First, this article introduces some theoretical methods and numerical methods to analyze microstrip antenna and sum up some techniques for miniaturization, multi-frequency and broadening the band.
本文首先介绍了微带天线的理论分析方法和数值分析方法，并总结了微带天线小型化、多频段以及展宽频带的各种技术。
This paper first gives an introduction to the principle and system components of the smart antenna and then discusses its self-adaptable arithmetic and technological advantages.
本文在简要介绍智能天线的基本原理、系统组成的基础上，详细论述了智能天线的自适应算法和技术优势。
To direction finding on antenna array, this paper first discussed classical algorithm -music algorithm in space spectrum estimate.
较为详细地分析了智能天线中关于波达方向估计的MUSIC算法。
The antenna is the first component in the RF-signal chain when receiving and the last one when transmitting.
该天线是在接收和发射时最后一个当RF信号链中的第一个组件。
The antenna (known as the "aerial" in some countries) is the first component in the receiver RF-signal chain and the last one in the transmitter chain.
所述天线(称为在一些国家的“天线”)是在接收机RF信号链中的第一组分和最后一个所述发射机链中。
This paper reviews its concept and applications first and then introduces some common fractal antenna and array designs.
本文在综述了这一新颖技术的基本特性和应用后，简要介绍了几种常用的分形天线和阵列设计。
In the distribution system design, first setting the antenna port power, accounting distribution system power, and determining the number of RRU needs.
在分布系统设计中，先设定天线口功率对分布系统实施功率核算，确定RRU需求数量。
First, the problem of scattering by arbitrarily shaped objects is studied by the method of moment (MoM), when a thin wire antenna exists, with the general matrix equation given.
介绍了利用矩量法求解线面复杂结构目标的电磁散射问题，并给出了一般的矩阵方程。
We arrived the top of a mountain and set up our antenna. nobody knows how to used FT-7800, except for me. at first, I helped BH7PGA to set up all the channel in Shenzhen, and told him how to use it.
首先，我帮助BH7PGA设置了所有深圳的（业余中继的）频点，并告诉他如何使用它（FT-7800）。他说，他刚买的（FT-7800），所以不知道如何使用它。
The function blocks of the low field NMR circuit system are analyzed at first. Then the signal amplitude is calculated. The antenna interface and the preamplifier are studied in detail at last.
本文首先对低场磁共振电路系统的各个功能模块进行了分析，并估算了低场磁共振的信号幅值，然后重点对天线接口和前置放大两个电路模块进行了分析研究。
With the enlargement of the surfaces, antenna gain also increases, at first considerably and later on less and less.
扩大反射面，天线的增益也会增加，开始时增加的较多，然后就越来越少了。
With the enlargement of the surfaces, antenna gain also increases, at first considerably and later on less and less.
扩大反射面，天线的增益也会增加，开始时增加的较多，然后就越来越少了。
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