ETC.RSU收发前端模块设计  

Design of RF Transmitter-receiver Front End for ETC.RSU

作　　者：许庆[1] 曾瑞锋[1] 苗一新[1] 黄贞松[1] 

机构地区：[1]南京电子器件研究所国博电子有限公司,南京210016

出　　处：《固体电子学研究与进展》2013年第1期63-67,共5页Research & Progress of SSE

摘　　要：设计并实现了一种用于ETC系统的收发前端模块,提出了一种新型ASK调制电路,较之传统收发模块性能有较大提高。该模块发射路采用数字模拟双重衰减器设计,接收路采用双AGC电路设计,可实现发射的ASK信号调制度30%～100%连续可调,接收动态范围-5～-85dBm,发射功率-4.5～27dBm,步进0.5dB可调,发射频率5 700～5 900MHz,步进1MHz可调。A new RF transmitter-receiver front end for ETC was designed and implemented. A new type of ASK modulation circuit was proposed. By comparison with the traditional module, the new transmitter-receiver module exhibits better performance. In the module a digital and two analog attenuators are used in transmitting channel and two AGC amplifier chips are used in re- ceiving channel. The measurement results are as follows： ASK modulation depth range is 30%～ 100%; the receiver dynamic range is -5～- 85 dBm; transmission power adjusting range is -4. 5～27 dBm with step size 0. 5 dB; location oscillator frequency adjusting range is 5 700～5 900 MHz with step size 1 MHz.

关 键 词：电子收费 振幅键控 调制度 射频识别 专用短程通信 路侧单元 

分 类 号：TN925.91[电子电信—通信与信息系统]