Measurement Uncertainty of Beam Parameters Induced by Imbalances of Amplitude and Phase for Antenna Array

摘要

Antenna Array's Beamforms would be influenced by the imbalances of amplitude and phase in all channels. Monte Carlo Method (MCM) was adopted to simulate the beamforming pattern's variations induced by amplitude variations, phase variations and the both, respectively. Linear 8-element array beamforming with a series of amplitude variations and phase variations were simulated. An 8x8 butler matrix was also designed and used to synthesize beams. Results indicated that channels' phase variations affect the main lobe angle greatly than amplitude variations. The standard uncertainty of synthesized main lobe angle were less than 1° when the phase variation is 11.2°.