The system includes RF front-end circuit and digital code and decode circuit.
系统包括射频前端电路和数字编码解码电路。
The frequency and bandwidth of the front-end circuit can be changed easily according to different satellite navigation signals.
针对不同的卫星导航信号，该前端电路的频率和信道带宽都可以容易地更改。
An RF front-end circuit for a fully integrated CMOS DTV tuner is presented in this paper, where double-conversion low IF architecture is employed.
该电路采用二次变频低中频结构，集成了低噪声放大器、上变频混频器、下变频混频器等模块。
Then, the paper elaborates the design principles of RF front-end circuit, including high efficient rectifier, modulation circuit, demodulation circuit and ESD protection.
然后本文详细阐述了射频前端电路设计原理及过程，包括高效倍压整流电路、调制电路、解调电路和ESD保护电路。
The NJ1006 is a higher integration level and single chip RF front-end circuit for GPS receivers. This paper has introduced its function, basic parameters and GPS Receiver RF Front circuit.
NJ1006是一个高集成度的单片GPS接收机射频前端集成电路，本文介绍了该芯片的作用、基本参数和它应用于GPS接收机射频前端的电路。
Low noise, high linearity RF front end circuit is the key of the whole RF receiver system design.
低噪声、高线性度的射频前端设计是整个射频接收机系统电路设计中的关键。
The coupled network based on the front end circuits selects specific signals of the local oscillators for each front end circuit.
基于前端电路将耦合到的网络，为每个所述前端电路选择特定的本机振荡器信号。
The acquisition circuit presented in this paper is a front-end of a field data collection system.
介绍了高速采集电路的一个现场数据采集系统的前端。
The front end in a digital broadcasting receiver means the part of circuit that converting RF analog signal to baseband digital data stream.
数字广播接收机前端电路指接收机中完成从射频到基带转换的部分，是决定接收机性能指标的关键部分。
Design of front end circuit in modern high frequency digital receiver is mainly discussed in this paper, and the detailed implement scheme is also proposed.
主要讨论了现代高频数字化接收机前端电路的设计，并提出了具体的实施方案。
Based on the equivalent circuit model of a two-port optical receiver front-end, the relationship between the equivalent input noise current spectral density and the noise figure is analyzed.
根据光接收机前端等效电路模型，建立了噪声系数与等效输入噪声电流谱密度的关系。
The access points comprise a plurality of front end circuits and a plurality of local oscillators coupled to MAC circuit.
所述接入点包括耦合到mac电路的多个前端电路以及多个本机振荡器。
Secondly, this paper has made the instructions of the overall structure about the UHF RFID tags, and analysis the circuit design specification of the RF front-end modules.
其次，本文对超高频射频电子标签的整体结构做了介绍，同时分析了射频前端各电路模块的设计指标。
The dissertation introduces design of each module's hardware circuit and software program adopted modularization thinking in Front-end and Detection Base.
在文中笔者运用模块化的设计思想完成了前端和检测台的硬件电路和软件程序的设计。
The second one is integrated signal acquisition device made up of sensor, front end circuit, data-showing meter, USB data acquisition card and power supply.
集成式信号采集装置包括传感器、前置器、数显表头、USB数据采集卡和供电电源；
The second one is integrated signal acquisition device made up of sensor, front end circuit, data-showing meter, USB data acquisition card and power supply.
集成式信号采集装置包括传感器、前置器、数显表头、USB数据采集卡和供电电源；
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