AD8345RF/IF射频/中频RFID的RF调制器规格书PDF中文资料

AD8345属于RF/IF射频/中频RFID的RF调制器。由亚德诺半导体技术有限公司制造生产的AD8345RF 调制器射频 (RF) 调制器产品用于通过更改载波的幅度、相位和/或频率，将信息编码到正弦载波信号上。执行反向解调操作的接收设备会选择性地以所需载波频率接收传入信号，从而将载波属性的变化转换回原始形式。这样的配置允许使用通信通道来同时传输多条消息，而彼此之间没有干扰。

INTRODUCTION

The in-phase and quadrature modulator (IQ modulator) is a key component in modern wireless transmitters. It provides a convenient method for modulating data bits or symbols onto an RF carrier. IQ upconversion has become the architecture of choice for implementing transmitter signal chains for end applications such as cellular, WiMAX, and wireless point-topoint. IQ modulators, however, can degrade signal fidelity in ways that are somewhat unique. These effects can degrade the quality of the transmitted signal during the modulation process, resulting in degraded error vector magnitude (EVM) at the receiver, which in turn degrades bit error rate (BER). Fortunately, algorithms exist that can correct these imperfections.