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A shaped beam antenna array for ultra high frequency radio frequency identification reader applications

机译:用于超高频射频识别阅读器应用的成形波束天线阵列

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In this paper, design of a shaped beam linear antenna array for RFID reader application in UHF frequency band of 902–928MHz was presented. Aperture-coupled patch configuration was adopted as array element. Fourier Series Method for antenna synthesis was used to calculate amplitude and phase of each corresponding antenna element, thus realizing the predefined pattern by feeding network of power divider. Measured reflection coefficient of antenna array was less than −15dB in 902–928MHz and gain at center frequency was about 9.8dBi. Radiation pattern had a 27ºdown tilt and 21º half power beam width in the main beam, which was close to the pre-defined pattern.
机译:本文提出了一种用于902–928MHz UHF频段的RFID阅读器应用的异形波束线性天线阵列的设计。采用光圈耦合贴片配置作为阵列元素。天线合成的傅里叶级数方法用于计算每个相应天线元件的幅度和相位,从而通过功率分配器的馈电网络实现预定模式。在902-928MHz范围内,测得的天线阵列反射系数小于-15dB,中心频率处的增益约为9.8dBi。辐射方向图在主光束中向下倾斜27º,功率光束宽度为21º的一半,这接近于预先定义的方向图。

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