Compared with the traditional techniques , the cmos rfic has its shortages . nowadays the cmos rfic chips often employ some special technology which increases the cost . however , they are still much cheaper than traditional technologies Cmos射频集成电路与用传统工艺实现的射频电路相比有其弱点,现今的cmos射频芯片通常还采用了一些特殊工艺以达到所要求的指标,增加了成本,但与传统工艺相比仍有很大的优势。
At the same time , from the method of specific realization , we used the software of advanced design system ( ads ) v2002 for the agilent company to design and emulate the radio frequency circuits . it can greatly reduce the difficulty of debugging the radio frequency circuits 同时，在具体的设计实现上，我们借助于美国agilent公司的advanceddesignsystem ( ads ) v2002软件进行射频电路设计仿真，极大地简化了射频电路的调试难度。
Under the application background of a certain national engineering model item , this dissertation focuses on the whole design of the rf circuit of the satellite signal receiver ; discusses the key techniques in the implement of engineering ; and does the hardware of the rf circuit completely 本文以某国家工程型号项目为背景,深入研究了卫星接收机射频电路的总体设计,探讨了工程实现中的关键技术,并完成了射频电路的具体硬件实现。
At last , the paper introduces the methods of testing the rf circuit . the essay discusses the physical system based on ad hoc model in detail , and introduces the problems we may meet when research the system . so the paper may have some useful to further understand the physical system 全文讨论了adhoc模式下,物理层硬件平台的相关理论和调试方法,尤其对射频电路设计部分有很全面的论述,相信对于wlan系统来说有很好的应用前景和指导意义。
The research on the on - chip spiral inductors using passive component simulator , asitic , is done at first since the on - chip spiral inductors have a significant effect on the performance of the rf circuits . according to the research results , the design guidelines for the on - chip spiral inductors are summarized 由于在片电感对射频电路的性能有很重要的影响，本论文首先使用无源元件模拟器asitic对在片电感进行了研究，总结出了设计在片电感应该遵循的原则。
Satellite signal receiver is the outcome of the development of the modern communication techniques , it has been widely used in many fields , such as satellite navigation 、 satellite television living broadcast and satellite digital broadcasting , etc . rf circuit is a very important part of the satellite signal receiver 卫星接收机是现代通信技术发展的产物,已在卫星导航定位、卫星电视直播以及卫星数字广播等领域中得到广泛的应用。射频电路是卫星接收机中一个非常重要的组成部分,它对接收到的微弱卫星信号进行放大与下变频处理后输出给后端的信号处理电路。
It has many benefits due to its ultra - wideband nature which including the following : not sensitive to channel fading , low transmit power , extremely difficult to intercept , low complexity of transceiver structure , fine range resolution ( centimeter scale ) for location and so on this paper combines uwb technology and mobile ad hoc network technology , concerting the lasn project of national key laboratory of communication , researchs the baseband process cell of uwb communication transceivers on the base of arithmetic research and spot test 本文结合uwb技术和移动自组织网( manet ,即mobileadhocnetwork )技术,配合通信抗干扰技术国防重点实验室uwb技术研究项目“ lasnproject ”的工作进展,在算法研究和现场测试的基础上,对uwb通信节点样机的基带处理单元进行设计研究。样机结构包含三大模块:天线、用分立器件形成的射频电路、由fpga构建的基带处理单元。
