Antenna Array Calibration Algorithm Based on Phase Perturbation

Djigan, Victor I.; Kurganov, Vladislav V.

doi:10.1109/ewdts.2019.8884394

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…Adaptive algorithm [9], [36] Frequency Domain Power 6(M-1)+2 measurements Perturbation algorithm [18], [19] Frequency Domain Power 6(M-1)+1 measurements FPC(Four-Phase-Cycle) [17], [37] Frequency Domain Power 4(M-1) measurements Three-Phase-Cycle [38] Frequency Domain Power 2M+1…”

Section: Phase Adaptationmentioning

confidence: 99%

“…Once the calibration has been completed, the system produces a synthesis of the coherent signals at the array output. The simplest aperture array calibration technique strive to calculate the optimal phase shifts in all channels by maximizing the received power at the array output [18]. For example, the phase adaptive method was utilised to tune the phase-shifters, but this does not guarantee an optimal solution in antenna array calibration problem, even with high-resolution phase-shifting circuits [19].…”

Section: Introductionmentioning

confidence: 99%

“…The most recent calibration algorithms are the ones that do not require measurements at the element level. Hence, no or minimum disruption is caused to the array operation [18]. In these methods, finite number of power measurements at array output are carried out, the measured data are then used for estimating unknown phase shifts in order to compensate them for each channel.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Calibration of Aperture Arrays in Time Domain Using the Simultaneous Perturbation Algorithm

Zhang

Xing

et al. 2023

IEEE Trans. Antennas Propagat.

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Online calibration is desired in antenna arrays of ultrawide bandwidth. This study proposes a time domain calibration method based on the simultaneous perturbation algorithm. Two objective functions were established: power of the received signal at array output; or combination of power and correlation coefficient between the signal at array output and a target signal. For both criteria, the convergence settings require only two measurements at each iteration. One advantage of the method is that the entire signal operation for calibration is performed in the time domain. This is achieved by resolving the effects of distortion on time delay of each channel, which accounts for both amplitude and phase distortions at different frequencies. Therefore, the proposed method significantly increased the calibration efficiency for ultra-wideband antenna arrays. Since time delay coefficients for calibration associated with array elements were determined independently due to characteristic of the simultaneous perturbation, estimation accuracy of the method is tangential to the number of elements in the array, and is mainly dependent on the convergence conditions. This gives the method an additional distinct advantage for calibrating large-scale antenna arrays with ultrawide bandwidth. An estimation accuracy of 99% on time delay adjustments has been achieved and demonstrated.

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