脉冲历史悠久的射频前端部件。
系统包括射频前端电路和数字编码解码电路。
The system includes RF front-end circuit and digital code and decode circuit.
介绍了射频前端的实现方案以及关键部件的设计与测试。
The design and test result of key elements are also presented.
在民用中，基站通信系统、车载通信系统都需要宽带射频前端。
In civilian, the base station communications systems, automotive communications systems require broadband RF front-end.
另一方面，射频前端几乎决定了射频测试仪表的整机性能和成本。
On the other hand, the overall performance and cost of the rf test instruments are almost decided by the rf front-end module.
利用累积知道如何，更大的可能性将脉冲天线同其他射频前端的功能。
By using cumulative know how, Pulse has great possibilities to integrate antenna together with other RF front end functions.
设计并制作了一种基于LTCC技术的系统级封装多通道射频前端电路。
A system in package(SIP) RF front-end based on LTCC technology was designed, fabricated and tested.
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。
Low noise, high linearity RF front end circuit is the key of the whole RF receiver system design.
介绍了一种应用于C波段接收机射频前端，并利用耦合微带线设计的射频滤波器。
An RF fitter, which is applied to C-band receiver RF front and designed with the coupling micros - trip line, is introduced.
由于手机射频前端部分含有大量无源元件，FEM成为利用LTCC的典型器件。
The RF part of mobile phone has a lot of passive devices, so FEM becomes of a typical LTCC device.
针对目前雷达侦察中面临的一些问题，本文提出了一种解决方法，即射频前端通道。
This paper gives a new method to solve some problems in current radar scout system, that is the front-end RF channel.
智能天线子系统中，射频前端模块包括线性功率放大器，低噪放大器，检测控制电路。
In intelligent peripheral subsystem, Radio Frequency Front Modules include linear power amplifier, low noise amplifier and detection control circuit.
介绍了双射频前端GPS遥感延迟映射接收机的设计原理及在海洋风场测量中的应用。
The design theory of double RF front end delay mapping receiver based Zarlink GP2021 and GP2010 for GPS remote sensing and application in sea wind measure are introduced.
课题来源于本学院“宽带短波接收机”项目，笔者负责其中接收机射频前端部分的研制。
The subjects come from the Institute of "broadband shortwave receiver", the author of which is responsible for part of the receiver RF front-end development.
对于接收射频前端电路的参数进行了分析，并且提出了优化、改进的方案和下一步的工作。
After analyzing and studying the circuits test parameters and design parameters, the improving methods and the next works are presented at last.
收发机是通信系统中不可缺少的一部分，而射频前端则是收发机的重中之重，应用十分广泛。
Transceiver machine communication system is an indispensable part of which is the front-end RF transceiver may be the most important application of a very wide range.
频率合成器是无线通信中射频前端的主要构件模块之一，性能直接决定射频接收机的频率选择性。
The frequency synthesizer is a key building block of radio frequency front-end for wireless communications and its performance determines the frequency selectivity of radio frequency receivers.
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。
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.
此外还对所设计出的接收机射频前端进行了整机测试，以检验接收机射频前端性能是否满足设计所需。
Furthermore, we carried out system testing in order to examine its performance, found out that the system satisfies design targets.
因此，无论是微波电路CAD的常用方法还是一般电路CAD的常用方法对射频前端关键电路都不适用。
Neither the CAD methods for microwave circuit nor that for general electronics are not so applicable.
其次，在对射频识别系统的协议和无线电频谱规范进行分析的基础上，确定了阅读器射频前端的体系架构。
Secondly, the architecture of reader front end is determined based on the analysis of RFID protocols and wireless frequency regulations.
本文借助基于TDSCDMA系统的基站收发机的设计阐述宽带数字收发机射频前端的设计原理和设计方法。
TDSCDMA paper-based system with the base station transceiver on the design of broadband digital transceiver RF front-end design principle and design methods.
接收射频前端的高增益和低噪声系数要求两级低噪放级联使用，通过计算低噪放的噪声估量确定了连接方式。
For the requirement of high gain and low noise figure (NF) of the receiver RF destination, two LNAs most be cascaded, which is determined by each noise calculation of the two different LNAs.
第六章为接收射频前端电路的原理图设计、PCB设计和系统电路的实现，对系统电路的重要参数进行了测试。
In chapter six, schematic design, PCB design and application circuits of receiver RF destination are all implemented and the important system parameters are tested by using the spectrum analyzer.
受射频前端相位误差、ADC采样误差及阵元个数有限的影响，综合孔径直接采样微波辐射计成像质量仍然较低。
Furthermore, taking phase error of RF front-end, sampling error of high-speed ADC and the size of array into consideration, the image quality of synthetic aperture DSMR is still poor.
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。
Then, the paper elaborates the design principles of RF front-end circuit, including high efficient rectifier, modulation circuit, demodulation circuit and ESD protection.
通过对这一接收机射频前端的研究与设计，使读者对接收机射频前端的设计理论和方法有一个比较全面而清楚的理解。
Readers will have general and explicit comprehension about the design theories and measures of RF front-end of receiver through the study and design of this thesis.
本文针对射频识别标签芯片的应用需求，对射频前端电路高性能、高灵敏度、低功耗、低成本方面展开了大量的研究。
Currently, RF front-end circuits with the low-power consumption and low-cost have launched a large number of studies for the applications of RFID chips.
射频前端接收芯片实现GPS信号的接收、放大、滤波和下变频，其中最重要的是对GPS信号进行下变频转化为数字中频信号。
RF front end receives, magnifies and filtrates the GPS signal, and above all, converts it down to IF digital signal.
射频前端接收芯片实现GPS信号的接收、放大、滤波和下变频，其中最重要的是对GPS信号进行下变频转化为数字中频信号。
RF front end receives, magnifies and filtrates the GPS signal, and above all, converts it down to IF digital signal.
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