The band width of the radio-frequency signal for the spread spectrum communication can be spreaded to several times or even thousands of times the band width of the information signal.
扩频通信的射频信号频带宽度，可扩展到信息信号频带宽度的数倍乃至数千倍。
The invention belongs to SLSI design of field of microelectronics and solid electronics; it is a radio-frequency signal integration static release protecting circuit realized by inductance.
本发明属于微电子学与固体电子学领域的超大规模集成电路设计，是一种采用电感实现的射频信号集成静电释放保护电路。
Comparing with traditional static release protecting circuit, the static release protection circuit can decrease the effect of static release protection circuit to radio-frequency signal greatly.
与传统静电释放保护电路相比，采用这种静电释放保护电路可以很大程度的减小静电释放保护电路对射频信号的影响。
In fact, due to their lower frequency, at similar RF exposure levels, the body absorbs up to five times more of the signal from FM radio and television than from base stations.
事实上，由于频率较低，在射频接触水平相同的情况下，人体从调频收音机和电视吸收的信号比从基台吸收的信号要多四倍。
For wireless digital communications, digital user signal is usually at first converted into analog domain and then modulated to radio frequency by one or two steps.
对于无线数字通信而言，通常将数字用户信号首先转换到模拟域中，然后通过一个或两个步骤将其调制到无线电频率。
Digital Radio Frequency Memory (DRFM) is a kind of microwave signal storage device.
数字射频存储器(DRFM)是一种微波信号存储部件。
Digital Radio Frequency Memory (DRFM) can store radar signal coherently for a long time, it provides powerful means to counter new radar systems.
数字射频存储器(DRFM)可以对雷达信号进行长时间的相干存储，为干扰现代相干体制雷达提供了有力的技术手段。
Firstly, the obtained radar signal radio frequency, pulse width, repeat frequency are composed to get a combined probability assignment function of radar parameters by applying D-S method.
首先，对侦察雷达所能探测到的目标雷达信号的载频、脉宽、重频，应用证据理论将其组合，得到雷达参数的联合概率分配函数。
AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.
调幅广播可以发送更远的距离，但它的声音质量却不及后来一种被称为频率调制的无线电信号处理方式优越。
This radio signal has a frequency of200,000 cycles per second.
这个无线电信号的频率是每秒200,000周期。
Conventional dual up-conversion transmitter usually employs an intermediate frequency (IF) mixer and a radio frequency (RF) mixer to convert baseband user signal to IF and RF in sequence.
传统双上变频发射器通常采用中频(IF)混合器和射频(RF)混合器将基带用户信号依次转换成IF和RF。
Radio frequency signals from two different tire transmitters are received and tire identification and location are determined based on radio frequency signal strength.
以及接收来自两个不同的轮胎发送器的射频信号，并根据射频信号的强度确定轮胎标识和位置。
Chapter 2 sets forth the structure of IF (Intermediate Frequency) digital Software Radio, the critical theory of Software Radio and the signal processing technique about it.
第二章介绍了中频数字化软件无线电的结构，并阐述了软件无线电的关键理论和软件无线电中的信号处理技术。
A method of receiving radio paging signal in underground building is proposed, and a practical identical frequency radio paging repeater and its design are provided.
提出了解决地下建筑物内接收无线电寻呼信息的一种方法，并提供了一个实用的同频无线电寻呼中继器及其设计。
The process of modifying a RADIO FREQUENCY (RF) signal by shifting its phase, FREQUENCY, or AMPLITUDE to carry information.
控制挪移射电频率(RF)信号的相位、频率或幅度来传送信息的过程。
With the radio frequency identification key, the radio frequency signal can be sent outwards when a user enters a room.
利用此射频识别钥匙，用户进入房间时能实现射频信号的对外发送。
With coherent detection, radio frequency (RF) signal can be recovered with simultaneously suppressed second-order distortion and third-order intermodulation.
通过相干检测的方式，可以恢复出不受二阶和三阶干扰的射频信号。
The receiver receives data regarding a reception level of the first signal at the first radio frequency.
接收 器以第一无线电频率接收涉及第一信号的接收强度的信息。
An electronic device that converts one frequency of a radio signal to another.
把信号的一种频率转换为另一种频率的电讯装置。
The invention relates to a method for wireless communication, in which a receiver (MS) receives a first signal at a first radio frequency and determines the reception level of the first signal.
本发明涉及一种用于通过无线电通信的方法，其中接收器(MS)以第一无线电频率接收第一信号并确定该第一信号的接收强度。
The first tuner receives the first radio frequency signal and outputs a first digital signal.
第一个调谐器接收首款射频信号和输出第一个数字信号。
RFID systems achieve auto-identification and data-gathering of the object to be identified by utilizing space coupling of radio frequency signal to conduct two-way transmission of signals.
RFID系统利用射频信号通过空间耦合进行双向信息传输，实现对待识别物体的自动识别和数据采集。
Again, like the radio, when you really get tuned very precisely onto the frequency, the static goes away and you can hear subtleties in the signal that you couldn't hear before.
再一次，以收音机作比方，当你极其准确地调到那个频率上时，杂音消失了，你就可以听见讯号中过去听不见的微妙之处。
In the platform, the short wave signal is digitalized in the radio frequency band and converted into the analytical baseband signal.
在这个平台上对短波信号射频数字化，然后进行数字变频，获得宽带基带解析信号。
The distributed parameters of signal path of high frequency relay are the main factors that influence the radio frequency (rf) performances of relay.
高频继电器信号路径的分布参数是影响继电器射频(RF)性能的主要因素。
The producing methods of various threaten signals are researched. And the model of the dense and complex radio frequency pulse signals is founded on the analysis of single radar signal.
本文研究了各种威胁信号的产生方法，在单部雷达辐射信号分析的基础上建立了密集，复杂射频脉冲信号的模型。
The producing methods of various threaten signals are researched. And the model of the dense and complex radio frequency pulse signals is founded on the analysis of single radar signal.
本文研究了各种威胁信号的产生方法，在单部雷达辐射信号分析的基础上建立了密集，复杂射频脉冲信号的模型。
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