首先，通过射频信号接收电路板接收证券信息；
These products can receive not only common information but also stock information.
外界的射频信号。
一发射器，用以输出一具第二中心频率的一射频信号；
第一个调谐器接收首款射频信号和输出第一个数字信号。
The first tuner receives the first radio frequency signal and outputs a first digital signal.
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。
With coherent detection, radio frequency (RF) signal can be recovered with simultaneously suppressed second-order distortion and third-order intermodulation.
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 the radio frequency identification key, the radio frequency signal can be sent outwards when a user enters a room.
经过调制产生了两个频段的射频信号，具有抗频率选择性衰落的优点。
The system can generate two frequencies, which will decrease frequency selective fading effect.
此外，携带模拟射频信号所需的电缆价格昂贵、脆弱，难以安装和更换。
In addition, cables needed for carrying analog radio frequency signals are expensive, fragile and difficult to install and replace.
收发信机可接收基带数据和控制信息，以及向功率放大器提供射频信号。
The transceiver may receive baseband data and control information and provide RF data to the power amplifier.
本文介绍了利用DDS来产生线性扫频信号的射频信号发生单元的设计。
This article describes the design of a linear sweeping frequency signal generator using DDS technology.
直接采样微波辐射计对射频信号直接采样，是一种结构简单的数字辐射计。
Direct sampling microwave radiometer (DSMR) is a digital radiometer of simple structure, which directly samples radio frequency signals.
按照该方案设计的便携式峰值功率计实现了对射频信号功率的准确快速测量。
The portable true peak power meter designed according to this strategy measures RF - signal power accurately and quickly.
射频功率放大器的主要功用是放大射频信号，并且以高效率输出大功率为目的。
The primary function of RF power amplifier is to amplify the RF singal with high efficiency.
除了抑制射频信号路径之外，还可以在预定义时段中禁用收发信机的斜坡输出。
In addition to squelching the RF signal path, a ramp output of the transceiver may further be disabled during the predetermined portion.
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 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.
迄今积累的所有证据都不能说明基台产生的射频信号会造成任何短期或长期的不良健康影响。
From all evidence accumulated so far, no adverse short - or long-term health effects have been shown to occur from the RF signals produced by base stations.
结论利用射频信号和核磁共振信号能够准确、快速地查找射频单元的故障发生点。
Conclusion The blooey point can be exactly and rapidly found by using RF-signal and MR-signal.
首先，本文从信号处理的角度系统的描述了MRI 射频信号收发器的原理和算法。
Firstly, the principles and algorithms of MRI signal transceiver were described and designed.
由于射频信号可能会干扰某些电子医疗装置和导航系统，在医院里和飞机上通常禁止使用移动电话。
Mobile phones are often prohibited in hospitals and on airplanes, as the radiofrequency signals may interfere with certain electro-medical devices and navigation systems.
本发明的另一方面在于包括接收基带数据并提供射频信号给功率放大器的收发信机的设备。
Another aspect of the present invention resides in an apparatus that includes a transceiver to receive baseband data and to provide RF data to a power amplifier.
由于无线网络与基台相比产生的射频信号一般较低，接触这些信号预计不会产生不良健康影响。
Since wireless networks produce generally lower RF signals than base stations, no adverse health effects are expected from exposure to them.
射频识别(又称电子标签)，是一种利用射频信号自动识别目标对象并获取相关信息的技术。
Radio Frequency Identification (RFID), also named E-tag, is a generic term for the technology using radio waves to automatically identify individual items and collect associated information.
基台和无线局域网络天线方面通常令人关注的一个问题涉及整个人体接触射频信号可造成的长期健康影响。
A common concern about base station and local wireless network antennas relates to the possible long-term health effects that whole-body exposure to the RF signals may have.
这是因为很难对基台发射的很低信号与环境中其它较高强度的射频信号分别造成的可能健康影响进行区分。
This is because of the difficulty in distinguishing possible health effects from the very low signals emitted by base stations from other higher strength RF signals in the environment.
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。
Radio frequency signals from two different tire transmitters are received and tire identification and location are determined based on radio frequency signal strength.
这一门课程是探讨在通信、天文、遥测（遥感）、仪器与雷达上的射频信号与光信号的检测与度量。
This course explores the detection and measurement of radio and optical signals encountered in communications, astronomy, remote sensing, instrumentation, and radar.
结果表明，射频信号的驱动电压，系统中偏振态的变化是影响频率锁定多载波光源产生的主要因素。
The results show that the radio frequency drive voltage, the variation of states of polarization are main factors to affect the generation of the frequency-locked multi-carrier source.
各种控制信号经遥控器天线以数字射频信号的方式发射出去，被机器人接收解码后去控制执行机构。
Diverse control signals are emitted as the digital radio frequency signals through the remote controller aerial received and decoded to control the executing elements by the robot.
各种控制信号经遥控器天线以数字射频信号的方式发射出去，被机器人接收解码后去控制执行机构。
Diverse control signals are emitted as the digital radio frequency signals through the remote controller aerial received and decoded to control the executing elements by the robot.
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