基于ADL5385发射电路设计与实现  

Design and Implementation of Transmitter Circuit Base on ADL4385

作　　者：单月忠 刘太君[1] 叶焱[1] 刘明伟[1] 

机构地区：[1]宁波大学通信技术研究所,浙江宁波315211

出　　处：《移动通信》2015年第6期65-69,共5页Mobile Communications

基　　金：国家自然科学基金(61171040);浙江省自然科学基金(Y1101270)

摘　　要：通过分析目前广泛应用的RFID阅读器的性能,提出了一种可调多频段RFID阅读器发射电路的实现方法。首先利用ADF4351的锁相环和倍频器特性来产生宽频带频率源,对于锁相环电路,运用ADIsim PLL软件进行仿真;然后分析和探讨了ADL5385上变频的基本原理及工作特性,利用其特性同时借助于数字衰减器和低噪放芯片实现输出功率可调;最后通过对硬件电路的调试和编写相关上位机及单片机控制程序,实现了功率可调、多频段的RFID阅读器的发射电路。Based on analysis of the performance of widely-used RFID reader at present, the transmitting circuit implementation method of a tunable multi-band RFID reader was presented in this paper. First, the phase-locked loop and frequency multiplier in ADF4351 are used to generate wideband frequency source, and ADIsimPLL software is used to simulate the phase-locked loop circuit. Then, the basic principle and working feature of up-conversion of ADL5385 are analyzed and discussed;in the meantime, the output power is adjustable by means of a digital attenuator and low noise amplifier chip. Finally, through hardware circuit debugging and preparation of related PC and MCU control programs, the transmitting circuit of the power-adjustable and multi-band RFID reader is implemented.

关 键 词：多频段 上变频 数字衰减器 低噪放 功率可调 

分 类 号：TN832[电子电信—信息与通信工程]