方形螺旋天线结构简单、频带范围宽，是一类性能优良的天线，但在变成定向辐射后其带宽会大大减小。
The square spiral antennas have many outstanding merits such that its structure is simple and its bandwidth is wide.
方形螺旋天线结构简单、频带范围宽，是一类性能优良的天线，但在变成定向辐射后其带宽会大大减小。
The square spiral antennas have many outstanding merits such that its structure is simple and its bandwidth is wide.
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