Human and animal studies examining brain wave patterns, cognition and behaviour after exposure to RF fields, such as those generated by mobile phones, have not identified adverse effects.
对接触射频场(例如移动电话所产生的射频场)之后的脑波模式、认知和行为进行研究的人体和动物研究未确认不良影响。
Some people perceive risks from RF exposure as likely and even possibly severe.
有些人认为接触射频的危险性可能存在，甚至可能很严重。
Cancer: Current scientific evidence indicates that exposure to RF fields, such as those emitted by mobile phones and their base stations, is unlikely to induce or promote cancers.
癌症：目前的科学证据表明，对射频场，诸如移动电话及其基台发射的射频场的接触不大可能引发或促发癌症。
As the number of base stations and local wireless networks increases, so does the RF exposure of the population.
随着基台和无线局域网络的数量增多，人们的射频接触也在增多。
The author's solution to this problem is to use a tuneable RF preamplifier which also acts as a low pass filter when tuning the low end of the 88-108 MHz band where most of the exotic channels lie.
作者的解决这个问题是使用可调谐射频前置放大器这也渠道作为一个低通滤波器调谐88-108兆赫时，低端的带异国情调的地方大部分的谎言。
It represents input waveforms as RF carriers with modulation envelopes that are described in the time domain.
它把输入波形表示为带有调制包络的RF载波，而该载波在时域中描述。
The FDTD method was originally proposed for electromagnetic waves with long wavelength such as RF and microwave. It can also be used for the analysis of optical devices.
FDTD方法最初是用来解决像射频与微波这样相对较长的波长的电磁问题的，它也可以用于光器件的分析。
If all else fails to prevent rf interference from being introduced into the input, external filtering of the device input paths may be required, as shown in Figure 3-7.
如果所有的措施都不能避免RF干扰进入测试输入端，那么就可能需要在设备的输入通路上进行外部滤波，如图3 - 7所示。
Project areas may include waveguide components subassemblies used in the RF path between a microwave transceiver the antenna, such as diplexers, filters couplers.
项目范围可能包括用在微波收发器和天线间通道的波导管组合件和部件，比如双工器、滤波器和耦合器；
An RF power meter has one major drawback: it cannot measure frequency, so it may give an "approved" rating to a defective mobile telephone, as in the following two examples.
功率计的一个主要缺点是：不能测量频率，因此它会对一个有缺陷的手机给出“通过”，就像下面的两个例子。
Generally, RFID System consists of hardware instruments, such as RF reader, antenna, transponder, and software components such as data collecting and processing Middleware.
射频识别系统主要由读写器、天线、电子标签等硬件设备和数据采集、处理中间件等软件组成。
In the traditional digital identification field, we often use the IC card, magnetism card and RF card as the media.
在传统的数字识别领域中，所采用的介质多为IC卡、射频卡、磁卡等。
As the signal is shifted from the original center frequency, the RF power analyzer reads lower and lower power levels as more and more of the signal shifts out of the intended transmission channel.
当信号从原中心频率偏移，信号越来越从设定的发射通道偏移，功率分析仪的功率电平会越来越低。
The CC2420 is chosen as the RF processing and communicating unit of sensor-node.
选择了CC 2420芯片作为传感器节点的射频通信与处理模块。
It takes AT89C51 single-chip computer and RF transceiver as core using the improved digital chaos algorithm.
该系统中以at89c 51单片机和射频收发器为核心，采用改进的混沌算法。
As a result, lower working pressure and higher RF power is helpful to prepare good a-C film, meanwhile, laser repetition has evident influence on films growth.
结果表明：在较低气压和较高的射频功率下制备的a - C膜质量较好，同时，激光重复频率对膜生长也有显著影响。
As one of the most important MEMS devices, RF MEMS switches have been applied in front-end circuits of some microwave systems, antenna and phase shift architectures.
射频MEMS开关是重要的射频MEMS器件，一些RF MEMS开关已经应用于部分微波系统的前端电路、数字电容器组和移相网络。
In this paper, we introduce some basic conceptions of RF MEMS switch such as the switch parameters, classification, typical fabrication process and design considerations.
本文着重介绍了RFMEMS开关的基本参数、分类以及典型制造工艺和设计时考虑因素等一些基本的概念。
In broadband communication systems, such as WCDMA, memory effects of RF power amplifiers (PAs) are significant and memoryless predistortion techniques cannot linearize PAs effectively.
在WCDMA等宽带通信系统中，射频功率放大器记忆效应明显，传统的无记忆预失真技术无法达到理想的线性化效果。
This paper discusses some critical rf planning problems of narrow-band CDMA, such as system capacity, link budget, PN offset and interference isolation.
本文对窄带CD MA系统无线规划的一些关键问题如系统容量、链路预算、PN偏置、干扰隔离等做了比较详细的讨论。
At the moment, most of RF chips and ultra high-speed circuits are based on technologies such as GaAs, Bipolar Si, BiCMOS and so on.
目前射频芯片和高速光纤通信芯片绝大多数都是采用高速双极性硅工艺和砷化镓工艺。
The key technology in designing of RF transceiver and an omnidirectional broadband microstrip antenna that can be used as array element for TD-SCDMA smart antenna system are discussed in this paper.
本文主要讨论了TD - SCDMA智能天线系统射频收发信机设计中的部分关键问题，同时研制了可用作智能天线阵列单元的全向宽带微带阵列天线。
The proposed design process can also be used in development of other static electricity driving devices, such as RF-MEMS.
所提出的设计开发流程也适用于静电驱动的其他器件的开发，如RF - MEMS器件。
The key technologies such as the method of controlling rf emitter power, wireless communication and the anti-interference measures are emphasized.
详细阐述了利用软、硬件实现的几项关键技术，包括控制RF发射器功耗、射频通信、抗干扰措施。
ConclusionWenyangtongluo soup combined with Taijiquan can improve indexes such as ESR, RF and CRP of RA patients, and clinical effect.
结论温阳通络汤配合太极拳锻炼能改善RA患者的ESR、RF、CRP等指标，提高临床疗效。
Despite the fact that their RF circuits are becoming more complex, these devices must remain as compact-if not more compact-with each new model.
尽管他们的RF电路变得越来越复杂的事实，这些设备必须保持为紧凑如果不是更紧凑，每个新的模式。
Future mini-aircrafts, such as Micro air Vehicle (MAV) and Nano-satellite, requires RF front-end modules with functional complexity, high density and low power consumption.
随着微型无人机、微纳卫星的出现，迫切需要功能更强、集成度更高、功耗更低的微型集成射频模块。
The circuit design is carried out by taking chip of RF-ID U2270B as core, including power module, frequency module, antenna module and data input;
采用以射频卡U2270B器件为核心完成支撑电路设计，包括电源模块、频率模块、天线模块和数据输入；
The circuit design is carried out by taking chip of RF-ID U2270B as core, including power module, frequency module, antenna module and data input;
采用以射频卡U2270B器件为核心完成支撑电路设计，包括电源模块、频率模块、天线模块和数据输入；
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