用于抛物柱面空间功率合成天线的功分喇叭阵列
Power dividing horn array for parabolic cylindrical spatial power combining antenna
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摘要: 提出了一种用于偏馈抛物柱面反射天线的功分喇叭。由于改善了口面上的电磁分布，该功分喇叭可以让馈源阵列的栅瓣电平抑制到－28 dB。用FEKO进行仿真发现，与传统用角锥喇叭阵列作为馈源的抛物柱面反射天线相比，使用功分喇叭直线阵列可以使空间功率合成天线的效率从68%提高到80%，同时天线的增益也能增加0.7 dB。Abstract: A power dividing horn for the offset parabolic cylindrical reflector antenna (OPCRA) is proposed. When the horns constitute an array, the grating lobes can be suppressed to －28 dB because of the improved aperture field. Compared with the OPCRA using conventional pyramidal horn array feed, the aperture efficiency of the OPCRA fed with power dividing horn array, which is simulated by FEKO, is improved from 68% to 80%. And the gain of the OPCRA can also be increased by 0.7 dB．
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