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天线设计的经典笔记
资料介绍
This document describes how HF (13.56 MHz) antennas can be built and tuned so that their characteristics match the requirements of the Texas Instruments high performance S6000 and S6500 readers and third party RF modules. This third edition places greater emphasis on antennas for the higher power readers.
In general, the distance at which a Tag-it? transponder inlay(tag) can be read is related to the size of the Reader's antenna system and its associated magnetic field strength -the larger the antenna-the greater the range.
However, as the antenna size increases other issues emerge: The Signal to Noise (S/N) ratio will reduce.
Shielding may be required to remain within regulatory legal limits.
Magnetic flux holes may develop where the inlay stops being read.
Matching the antenna to the reader will become more difficult and, if the inductance gets too high, may prove impossible.
部分文件列表
| 文件名 | 大小 |
| 天线设计的经典笔记.pdf | 4M |
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