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引用次数: 0
摘要
设计了一种具有插入馈电配置的零相移线(ZPSL)双环天线，用于超高频(UHF)近场射频识别(RFID)应用。ZPSL双环天线设计在0.5 mm厚的FR4衬底上，在400 mm ×400 mm(周长1600 mm, 4.88$\lambda$， 915 MHz)的审问区域内实现了均匀的磁场分布。该天线在850-1060 MHz的宽频率范围内使用小于10 dB的$\vert$ $S_{11}$ $\vert$进行测量，实现了高达15 mm的100%读取范围(使用1W输出功率的Impinj阅读器，Sag标签)。
An Electrically Large Zero-Phase-Shift Line (ZPSL) Dual-Loop Antenna with Inset Feeding structure
A zero-phase-shift line (ZPSL) dual-loop antenna with inset feeding configuration is designed for applications of ultra-high frequency (UHF) near-field radio frequency identification (RFID). Designed on 0.5 mm thick FR4 substrate, the ZPSL dual-loop antenna achieves a uniform magnetic field distribution within an interrogation area of 400 mm ×400 mm (perimeter of 1600 mm, 4.88$\lambda$ at 915 MHz). The antenna is measured with $\vert$ $S_{11}$ $\vert$ smaller than 10 dB in a wide range of frequencies 850-1060 MHz, achieving a 100% reading range up to 15 mm (with an Impinj reader of 1W output power, Sag tag).
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