Synthesis of plane wave applied to 5G communication antenna measurement

In this paper, the synthesis problem of plane wave applied to 5G communication measurement is studied by means of theoretical analysis and computer simulation. A plane wave generator (PWG) working at 28 GHz is designed to realize the near-field antenna measurement. The PWG consists of 21 × 21 units, whose amplitude and phase are figured out by using the least squares method (LSM). The numerical simulation results indicate that the high-purity plane wave is synthesized in the quiet zone with 20λ × 20λ × 7λ. The frequency bandwidth is 12 GHz covering the communication system band of 5G. The max amplitude error is less than 1 dB and the max phase error is less than 10° on the area under test (AUT), meeting the antenna measurement requirements.