Permutation of Phase Shifter Control Codes to Increase Efficiency of Antenna Array Calibration

The paper presents an algorithm of Reducing the Antenna Array Phase Shifters Errors (RAAPSE), caused by technological deviation of the phase shift of bits. The algorithm is based on preliminary measuring and permutation of phase values of PS, and using the nearest value to one, estimated by AA calibration algorithm. This allows to reduce the error in phase setting to the value of the least significant bit of the PS. The RAAPSE algorithm is used together with Antenna Array (AA) calibration algorithms, which estimate and compensate AA channel phase errors by PS. The RAAPSE algorithm increases AA calibration the accuracy or reduce the number of measurements during the calibration, ensuring the required calibration accuracy.