文档介绍：课程设计
题目基于RF2098芯片扩频接收器电路设计
学院名称电气工程学院
指导老师
班级电子信息工程053班
学号20054470309
学生姓名
二00八年六月
基于RF2098芯片扩频接收器电路设计
摘要
简要介绍RF2908的功能,内部结构`,引脚构造和功能描述,芯片工作原理。RF2908是专门为工作在ISM频段而设计的直接序列扩频(Direct-Sequence Spead-Spectrum)单片接收器, Part ,适合数字无绳电话、保密通信链接、无线局域网、货物跟踪和便携电池供电的移动设备等领域应用。主要技术特点如下: ·工作频率为902~928 MHz; ·接收灵敏度为-l00 dBm; ·正交解调器; ·~ V; ·工作电流为62 mA,待机模式电流为50μA; ·片内可编程86信道PLL频率合成器、基带滤波器和双数字比较器; ·片内可选择中频带宽、带增益控制和信号强度指示器的双中频放大器。
关键字:直接序列扩频,带增益控制器。
Abstract
RF2908 briefed the function of the internal structure of `, pin structure and function described, the chip works. RF2908 is designed for work in the ISM band and the design of direct sequence spread spectrum (Direct-Sequence Spead-Spectrum) single-chip receivers, with FCC Part . Standard for digital cordless phones, munication links, wireless LAN, Cargo tracking and portable battery-powered mobile devices, and other areas of application. The main technical characteristics are as follows: • operating frequency is 902 ~ 928 MHz; • receive sensitivity for - l00 dBm; • quadrature demodulator; • work for the power supply ~ V; • work for the current 62 mA, in standby mode current of 50 μ A ; • 86-chip programmable channel PLL synthesizers, base-band filter and a double-figures parison; •-chip option IF bandwidth, with gain control and signal strength indicator of the double-IF amplifier.
Key word: Direct sequence spread spectrum, with gain control.
目录
---------------------------------------------------------------------------------------------4
2. 引脚和封装-------------------------------------------------------------------------------------------4
-----------------------------------------------------5
--------------------------------------------------5
--------------------------------------------------6
3 RF2908 内部结构和工作原理------------------------------------------------------------------6
RF2908内部结构方框图----------------------------------------------------------