A Ku-Band Planar Antenna Array for Mobile Satellite TV Reception With Linear Polarization

作者：Azadegan Reza^*

来源：IEEE Transactions on Antennas and Propagation, 2010, 58(6): 2097-2101.

DOI：10.1109/TAP.2010.2046836

• Microstrip antenna arrays
• satellite communications

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 degrees to 65 degrees 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 degrees. Therefore, the array of fixed-beam subarrays needs to be scanned +/- 20 degrees 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 degrees scan) with the peak gain of 26.5 dBi (for 32 degrees scan) at 12 GHz while occupying a circular aperture of 26 cm in diameter.

• 出版日期2010-6