首页|嵌入式系统|显示技术|模拟IC/电源|元件与制造|其他IC/制程|消费类电子|无线/通信|汽车电子|工业控制|医疗电子|测试测量
首页 > 分享下载 > 消费类电子 > RFID天线设计

RFID天线设计

资料介绍
antenna circuit design for rfid applications(microchip)_AN710
Antenna Circuit Design for RFID Applications
Author: Youbok Lee, Ph.D. Microchip Technology Inc.

REVIEW OF A BASIC THEORY FOR RFID ANTENNA DESIGN
Current and Magnetic Fields
Ampere’s law states that current flowing in a conductor produces a magnetic field around the conductor. The magnetic field produced by a current element, as shown in Figure 1, on a round conductor (wire) with a finite length is given by:

INTRODUCTION
Passive RFID tags utilize an induced antenna coil voltage for operation. This induced AC voltage is rectified to provide a voltage source for the device. As the DC voltage reaches a certain level, the device starts operating. By providing an energizing RF signal, a reader can communicate with a remotely located device that has no external power source such as a bat
RFID天线设计
本地下载

评论