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首页> 外文期刊>Antennas and Propagation, IEEE Transactions on >A Ku-Band Planar Antenna Array for Mobile Satellite TV Reception With Linear Polarization
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A Ku-Band Planar Antenna Array for Mobile Satellite TV Reception With Linear Polarization

机译：用于线性极化的移动卫星电视接收的Ku波段平面天线阵列

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摘要

We present a high gain linearly polarized Ku-band planar array for mobile satellite TV reception. In contrast with previously presented three dimensional designs, the approach presented here results in a low profile planar array with a similar performance. The elevation scan is performed electronically, whereas the azimuth scan is done mechanically using an electric motor. The incident angle of the arriving satellite signal is generally large, varying between 25$^{circ}$ to 65$^{circ}$ depending on the location of the receiver, thereby creating a considerable off-axis scan loss. In order to alleviate this problem, and yet maintaining a planar design, the antenna array is designed to be consisting of subarrays with a fixed scanned beam at 45$^{circ}$ . Therefore, the array of fixed-beam subarrays needs to be scanned ${pm}20^{circ}$ around their peak beam, which results in a higher combined gain/directivity. The proposed antenna demonstrates the minimum measured gain of 23.1 dBi throughout the scan range (for 65$^{circ}$ scan) with the peak gain of 26.5 dBi (for 32 $^{circ}$ scan) at 12 GHz while occupying a circular aperture of 26 cm in diameter.
机译：我们提出了一种用于移动卫星电视接收的高增益线性极化Ku波段平面阵列。与先前提出的三维设计相反，此处提出的方法导致了具有类似性能的薄型平面阵列。高程扫描是通过电子方式进行的，而方位角扫描是使用电动机以机械方式进行的。到达的卫星信号的入射角通常很大，取决于接收器的位置，在25°到65°之间变化，从而产生相当大的离轴扫描损耗。为了减轻该问题并保持平面设计，天线阵列被设计成由具有固定扫描波束的子阵列组成，该子阵列的固定扫描波束为45 $ ^ circ。因此，固定光束子阵列的阵列需要在其峰值光束周围扫描$ {pm} 20 ^ {circ} $，这导致更高的组合增益/方向性。拟议中的天线在12 GHz时在整个扫描范围内（对于65 $环行扫描）显示的最小测量增益为23.1 dBi，峰值增益为26.5 dBi（对于32环行扫描）。直径为26厘米的圆形孔。

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