摘要
有源射频识别定位系统现已被广泛应用于各种定位场景。针对实际场景下电子标签小型化的需求,在半径为14 mm的半圆里,应用弯折线实现了标签PCB天线的小型化设计,增益达到-17 dB。基于集总元件电路,天线实现了433 MHz的谐振特性,且标签天线与标签芯片实现了50Ω的阻抗匹配。
The active radio frequency identification positioning system has now been widely used in a variety of positioning scenarios. The meander line is applied to designation of 433 MHz tag PCB antenna to meet the requirement of the miniaturization of electronic tags under the actual scenarios. The PCB antenna is designed in the semicircle space of a diameter of 14 mm with a gain of-17 dB. Based on the lumped circuit,the antenna achieves a resonance characteristic of 433 MHz and a 50 Ω impedance match between the antenna and the chip.
出处
《电子科技》
2014年第10期139-141,146,共4页
Electronic Science and Technology
