2024年5月13日发(作者：析孤萍)
FM无线发射与接收电路的设计,无线音箱设计
毕 业 设 计
题目:… FM无线发射与接收电路的设计 …
学 院： 信息与电子工程学院
专 业： 应用电子技术
填写日期：二零一二年十二月二十五日
摘要
摘要
在现代通信中，简易无线设备是一种近距离的、简单的无线传输
通信工具，目前广泛应用于生产、广播电视、野外工程领域的小范围
移动通信工程中。本次毕业设计以BH1417F集成发射芯片、SP7021F
收音机集成芯片、TDA2822M功放芯片为基础，构造了一款立体声FM
无线发射与接收电路的设计的传输系统。
BH1417F是ROHM公司推出的新型FM无线发射芯片，是锁相环
调频立体声发射专用集成电路，电路主要分为前级放大电路，高频振
荡，高频功率放大三个部分，仅仅需要很少的外围元器件就能够扶僻
优异的体声调频信号。SP7021F内包含有高放、混频、本振、二级有
源中频滤波器、中频限幅放大器、鉴频器、低频器、低频放大器、静
噪电路以及相关静噪系统等。低频功放部分用TDA2822M功放芯片。
该无线传输系统，相距可达到5米，通过扬声器播放的声音清晰，
厚重，无明显失真。
关键词：无线传输 BH1417F SP7021F TDA2822
I
Abstract
Abstract
In modern communications , simple wireless device is one kind of
short distance wireless transmission communication tools , simple ,
widely used in production , radio and television , field engineering in
small scope mobile communication project . The graduation design with
BH1417F integrated chip launch , SP7021F radio chip , TDA2822M power
amplifier chip as the foundation , constructs a stereo radio sound
transmission system .
BH1417F is ROHM launched the new FM wireless emitting chip , is
phase-locked loop FM stereo transmitter integrated circuit , main circuit
is divided into a front stage amplifier circuit , high frequency oscillation ,
frequency power amplifier three parts , only needs few peripheral
components can help out-of-the-way excellent sound FM signal .
SP7021F contains high discharge , mixing , lo , two stage active filter , if
limiter amplifier , discriminator , low frequency , low frequency amplifier ,
a squelch circuit and associated squelch system . Low frequency power
amplifier with TDA2822M power amplifier chip .
The wireless transmission system , distance can reach 5 meters ,
played through a loudspeaker voice clear , thick , no obvious distortion .
2024年5月13日发(作者：析孤萍)
FM无线发射与接收电路的设计,无线音箱设计
毕 业 设 计
题目:… FM无线发射与接收电路的设计 …
学 院： 信息与电子工程学院
专 业： 应用电子技术
填写日期：二零一二年十二月二十五日
摘要
摘要
在现代通信中，简易无线设备是一种近距离的、简单的无线传输
通信工具，目前广泛应用于生产、广播电视、野外工程领域的小范围
移动通信工程中。本次毕业设计以BH1417F集成发射芯片、SP7021F
收音机集成芯片、TDA2822M功放芯片为基础，构造了一款立体声FM
无线发射与接收电路的设计的传输系统。
BH1417F是ROHM公司推出的新型FM无线发射芯片，是锁相环
调频立体声发射专用集成电路，电路主要分为前级放大电路，高频振
荡，高频功率放大三个部分，仅仅需要很少的外围元器件就能够扶僻
优异的体声调频信号。SP7021F内包含有高放、混频、本振、二级有
源中频滤波器、中频限幅放大器、鉴频器、低频器、低频放大器、静
噪电路以及相关静噪系统等。低频功放部分用TDA2822M功放芯片。
该无线传输系统，相距可达到5米，通过扬声器播放的声音清晰，
厚重，无明显失真。
关键词：无线传输 BH1417F SP7021F TDA2822
I
Abstract
Abstract
In modern communications , simple wireless device is one kind of
short distance wireless transmission communication tools , simple ,
widely used in production , radio and television , field engineering in
small scope mobile communication project . The graduation design with
BH1417F integrated chip launch , SP7021F radio chip , TDA2822M power
amplifier chip as the foundation , constructs a stereo radio sound
transmission system .
BH1417F is ROHM launched the new FM wireless emitting chip , is
phase-locked loop FM stereo transmitter integrated circuit , main circuit
is divided into a front stage amplifier circuit , high frequency oscillation ,
frequency power amplifier three parts , only needs few peripheral
components can help out-of-the-way excellent sound FM signal .
SP7021F contains high discharge , mixing , lo , two stage active filter , if
limiter amplifier , discriminator , low frequency , low frequency amplifier ,
a squelch circuit and associated squelch system . Low frequency power
amplifier with TDA2822M power amplifier chip .
The wireless transmission system , distance can reach 5 meters ,
played through a loudspeaker voice clear , thick , no obvious distortion .