一个紧凑的宽带圆极化四线天线与PIFA元素的超高频RFID阅读器

IF 1.4 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Microwave and Wireless Technologies Pub Date : 2020-04-08 DOI:10.1017/S1759078720000276

Chawanat Lerkbangplad, A. Namahoot, P. Akkaraekthalin, S. Chalermwisutkul

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引用次数: 2

摘要

摘要本文提出了一种具有平面倒f天线(PIFA)单元的紧凑型圆极化四线天线。该天线由4个PIFA单元和一个基于Wilkinson分频器的馈电网络组成，该馈电网络基于FR-4衬底(r = 4.4，损耗正切= 0.02，厚度= 1.6 mm)。天线总尺寸为120 × 120 × 13.2 mm3。在全球超高频(UHF)射频识别(RFID)频带及更远的频带上，实现了反射系数< - 15 dB和轴向比(AR) <3 dB的阻抗匹配。实现的增益范围为2.25 ~ 3.75 dBic，目标频段为860 ~ 960 MHz，具有定向辐射方向图。与最先进的UHF RFID读取器天线相比，该天线结构紧凑，成本低，在匹配和增强现实方面具有极高的带宽。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A compact wideband circularly polarized quadrifilar antenna with PIFA elements for UHF RFID readers

Abstract In this paper, a compact circularly polarized quadrifilar antenna with planar inverted-F antenna (PIFA) elements is presented. The proposed antenna consists of four PIFA elements and a Wilkinson divider-based feed network fabricated on FR-4 substrate (ɛr = 4.4, loss tangent = 0.02, thickness = 1.6 mm). The total size of the antenna is 120 × 120 × 13.2 mm3. Impedance matching with a reflection coefficient <−15 dB and an axial ratio (AR) <3 dB are achieved over the global ultra-high frequency (UHF) radio frequency identification (RFID) frequency band and beyond. The realized gain ranges from 2.25 to 3.75 dBic within the frequency band of interest from 860 to 960 MHz with a directional radiation pattern. The proposed antenna is compact, low-cost and extremely wideband in terms of matching and AR compared to state-of-the-art UHF RFID reader antennas.

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来源期刊

International Journal of Microwave and Wireless Technologies ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.50

自引率

7.10%

发文量

130

审稿时长

6-12 weeks

期刊介绍： The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.