Error factors in phased array with photonic feed system and the effects on radiation pattern

摘要

In this paper, we have focused on the phased array with a photonic feed system. The photonic feed system controls the distributions of antenna excitation by using an optical Fourier transform and an optical/electrical conversion. In the photonic feed system consisted of one laser and a frequency shifter, optical fibers and a frequency shifter have error factors. Therefore we have considered the effects of the error factors on the radiation pattern. At first, we mention a process to statistically calculate the average power patterns including the error factors, and show the calculated examples. Next, we calculate the directive gains, and consider the effects of the error factors on directivity.