Influence of incoming wave polarization on beamforming of fishbone antenna array in low frequency band

In order to clearly recognize the shortwave directional sector antenna array, we improve the array beamforming method and the performance of the beamforming system, and use the model of fishbone antenna array to simulate the reception of different polarization signals. We analyze the direction and gain of beam vary with the polarization of incoming wave and the number of array elements. The results show that when the incoming wave signal is a high polarization angle, the direction of the array beamforming according to the polarization phase complement of the incident wave is more stable than that of the main polarization phase complement, and the gain can be improved by 2dB. At the same time, performance of the beamforming of two complementary phase modes are compared with the measured data. It fits well with the theoretical analysis. This method provides a theoretical basis for further studying the polarization characteristics of the array and the practical engineering application of the beamforming.