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引用次数: 1
摘要
本文以谐振腔天线(RCA)为基础，尝试设计一种体积小、高增益的毫米波频段大规模MIMO天线阵列。具体而言，提出了一种工作在28 GHz、元件间距为0.7 λ的4端口MIMO天线阵列，该阵列由两层基板组成。上层是一个频率选择表面，下层由4个微带片组成，作为MIMO馈电堡垒。因此，每个MIMO端口的增益可以通过共享相同的谐振器而无需设计复杂的馈电网络来大幅提高。MIMO天线阵列的每个端口可以获得约15.2 dBi的增益，其紧凑尺寸为25 mm × 25 mm (2.3 λ×2.3 λ)。
A high-gain compact size four-port MIMO antenna array working at 28 GHz
In this paper, a design of massive MIMO antenna array working at millimeter wave (mmW) band with compact size and high gain is attempted based on resonant cavity antenna (RCA). Specifically, a 4-port MIMO antenna array working at 28 GHz with element spacing of 0.7 λ is presented, which consists of two layers of substrates. The upper layer is a frequency selective surface, and the lower layer consists of 4 microstrip patches being the MIMO feeding forts. Thus, the gain of each MIMO port can be improved sharply by sharing the same resonator without the need of designing complex feeding networks. Each port of the MIMO antenna array can obtain a gain around 15.2 dBi with a compact size of 25 mm × 25 mm (2.3 λ×2.3 λ).
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