摘要
提出了一种小型双频微带天线设计,用于手持式RFID阅读器。采用矩形贴片和E形贴片结构,利用空腔模型理论中短路加载和耦合谐振技术,实现了微带天线的小型化和双频性能。尺寸大小为30 mm×30 mm。工作频带则覆盖RFID技术常用微波段2.45 GHz(2.4~2.484 GHz)和5.8 GHz(5.725~5.825 GHz)频段。使用HFSS软件进行了仿真优化,并对天线实物进行测试,与仿真结果吻合。最后得到的低频带宽在2.40~2.47 GHz,高频带宽在5.67~6.25 GHz,最大增益分别为2.6 dBi和4.4 dBi。
This paper presents a compact dual-frequency microstrip antenna designed for handheld RFID readers. Rectangular patch and E-shaped patch structure are applied in short circuit loading and： coupling resonance technologies from the cavity model theory, realizing miniaturization and dual-frequency performance in microstrip antenna. The size of the an- tenna is 30 ram^30 ram. The working frequency covers the microwave bands of 2.45 GHz （2.4 - 2. 484 GHz） and 5.8 GHz （5. 725 -5. 825 GHz） that are commonly used in RFID. HFSS is used to simulate and optimize the antenna. Physical anten- na is tested and the test results match with the simulation results. Finally it obtains that the low-frequency bandwidth is be- tween 2.40 ~ 2.47 GHz and the high-frequency bandwidth is between 5.67 - 6.25 GHz. The maximum gains are 2.6 dBi and 4.4 dBi respectively.
出处
《微波学报》
CSCD
北大核心
2017年第2期28-31,共4页
Journal of Microwaves
基金
吉林省科技发展计划(20150204033GX)
关键词
RFID阅读器天线
小型化
双频带
短路加载
耦合谐振
RFID reader antenna,miniaturization, dual-frequency, short circuit loading, coupling resonance
