2.4GHz短距无线通信系统射频模块的设计.pdf

第34 卷第l 期 东南大学学报（自然科学版 ） VoI. 34 No. l 2004 年l 月 JOURNAL OF SOUTHEAST UNIVERSITY （NaturaI Science Edition ） Jan. 2004 2. 4 GHZ 短距无线通信系统射频模块的设计 张 华 赵洪新 洪 伟 （ ， 2l0096 ） 东南大学毫米波 国家重点实验室 南京 摘要：主要介绍一种工作在2. 4 ~ 2. 5 GHZ ISM 频段的短距离无线通信收发信机射频前端模块. 该模块由低噪声放大器（LNA ）、上/ 下变频器、锁相环（PLL ）频率合成器以及射频/ 中频滤波器等 构成，并集成在一块97 mm X 66 mm 的PCB 板上. 文中在理论分析和仿真基础上对射频前端电路 进行了设计和研制. 发射通道输出信号频谱和接收通道解调信号的测试结果表明，该射频模块可 应用于蓝牙或IEEES02. llb 无线局域网等短距离无线通信系统. 关键词：无线扩频通信；射频前端；收发信机；仿真与测试 TN925 +. 92 ；TN929. 54 文献标识码：A 文章编号：l00l - 0505（2004 ）0l-00l0-05 中图分类号： Design of 2. 4 Ghz RF module for short-range wireless communications Zhang Hua Zhao Hongxin Hong Wei (State Key Laboratory of Millimeter Waves, Southeast University, Nanj ing 2 l0096, China) - - Abst ract : This paper presents the design of an RF front end module for a short range Wireless communication transceiver that operates in the 2. 4 to 2. 5 GHZ ISM freguency band. The module is composed of LNA, up/doWn converter , PLL synthesiZer and RF/ IF filter . All the circuits have been X - integrated to one 97 mm 66 mm PCB. The design of RF front end circuits is given on the basis of theoretical analysis and simulation . The test results that output signal spectrum of transmitting path and demodulated signal of receiving path shoW that the RF module can be applied for short-range Wireless communication systems, such as Bluetooth or