1) broadband RF front end
宽带射频前端
1.
Based on the comparison of feature and feasibility of several technical schemes for software defined radio(SDR) broadband RF front end,a novel scheme is proposed which uses multi-way distributive channels RF front end.
比较了软件无线电宽带射频前端的几种技术方案特点及其可行性,提出了一种采用多路可配置信道组网射频前端方案,分析了其关键技术及解决措施;并以2~2000 MHz宽带射频前端为例进行仿真,给出典型仿真结果,验证了方案的可行性。
2) wideband RF
宽带射频
1.
Three key techniques about software radio are discussed,that is wideband analog-to-digital convertor,digital signal processing,wideband RF.
给出了第三代移动通信系统的核心技术之一———软件无线电的概念、组成体系和功能结构 ,讨论了软件无线电的宽带A/D变换器、高速DSP和宽带射频前端等三个关键技术 ,对模数变换的性能进行了计算机模拟分析 ,指出了设计软件无线电时存在的问题并提出实现的设想。
3) RF bandwidth
射频带宽
5) Front-end
[英]['frʌnt,end] [美]['frʌnt,ɛnd]
射频前端
1.
A System Design of the GNSS Dual-band Receiver Front-end;
双频GNSS接收机射频前端的系统设计
2.
This paper analyses the design and implementation of an external AGC system for a PN-code ranging radar s receiver in an space vehicle,and focuses on discussing of how to design an all-digital AGC according to the output of the front-end device to extend the dynamic range.
论述了某航天器伪码测距雷达接收机外部AGC的设计原理和具体实现,并重点讨论了如何根据射频前端的输出来设计全数字AGC,来扩展接收机的动态范围。
6) RF front-end
射频前端
1.
Design and realization of the preselected filter of dedicated SW receiver RF front-end;
专用短波接收机射频前端预选滤波器设计与实现
2.
Frequency planning of RF front-end for DRM receivers;
DRM接收机射频前端芯片的频率规划设计
3.
Design and Realization of RF Front-end of the High Dynamic Range Broad Band Receiver;
大动态范围宽带接收机射频前端设计与实现
补充资料：宽带和窄带业务
宽带业务是相对窄带业务而言的，一般来说，对于速率低于2Mb/s的通信业务统称窄带业务，如电话网、N-ISDN所提供的业务。对于高于2Mb/s的通信业务，如帧中继业务、视频点播、ATM业务、TV会议等称为宽带通信业务。 目前投入应用的宽带接入技术主要有两种：ADSL和FTTX＋LAN。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条