New methods of reducing the phase quantization error effects on beam pointing and parasitic side lobe level of the phased array antennas

Taheri, Seyed Mohammad; Farzaneh, Forouhar

doi:10.1109/apmc.2006.4429830

Cited by 14 publications

(7 citation statements)

References 2 publications

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“…In order to further reduce such errors, one can slightly change the last bit of phase code for n-bit element (n ≥ 2), since it can break the periodicity of phase quantization error. But the available phase states are actually reduced [20]. Therefore, we still use the round off method for phase quantization in our design.…”

Section: E Phase Quantizationmentioning

confidence: 99%

Design of a 2-Bit Reconfigurable UWB Planar Antenna Array for Beam Scanning Application

Fang

Yang

Gao

et al. 2023

IEEE Open J. Antennas Propag.

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Reconfigurable antennas have been widely employed for beam scanning in recent years. However, such antennas are usually limited by narrow bandwidth. To overcome this challenge, we present a linearly polarized 2-bit ultra-wideband (UWB) antenna array in C-band. The antenna array consists of 16 Vivaldi elements, 16 wideband phase shifters and a feeding network. The structural symmetry is employed to provide a couple of opposite phase states in the broad bandwidth. The measured results show that the antenna array can operate well in a broad bandwidth from 4.0 to 5.5 GHz (the relative bandwidth ∼ 31.5%) with reflection loss lower than −10 dB. The scanning angle ranges from −45 • to 45 • with the sidelobe below −10dB, which agrees well with the theoretical predictions. The design features low cost, simple structure, easy fabrication and broad bandwidth.INDEX TERMS Reconfigurable antenna, 2-bit, beam scanning, antenna array.

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Section: E Phase Quantizationmentioning

confidence: 99%

Design of a 2-Bit Reconfigurable UWB Planar Antenna Array for Beam Scanning Application

Fang

Yang

Gao

et al. 2023

IEEE Open J. Antennas Propag.

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“…The phase feedings of phase shifters were optimised in Refs. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] to improve the beam steering accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…The phase feedings of phase shifters were optimised in Refs. [10–25] to improve the beam steering accuracy.…”

Section: Introductionmentioning

confidence: 99%

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Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

Qiu

Zhang

et al. 2023

IET Microwaves Antenna & Prop

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In a phased array radar, the phase quantisation error of phase shifters can lead to the beam steering error (BSE) between the predetermined and the actual directions. Existing researches on phase feeding optimisation suffer from high computational complexity and large storage space. In this study, an equivalent monopulse method is first proposed to yield the BSE with O(N) complexity by formulating the equation between the phase quantisation error and BSE. Further, a symmetric phase feeding compensation (SPFC) method is developed on the basis of the proposed scheme to cancel the phase quantisation error employing a symmetric planar array. Subsequently, a random phase compensation method is formulated to further reduce the residual quantisation errors of SPFC, and a random symmetric phase feeding compensation (RSPFC) method is proposed. The proposed SPFC and RSPFC methods possess O(N) complexities and allow for parallel calculation of element phase feedings, thus making the proposed methods more applicable on the embedded beam controller of a phased array radar. Based on computer simulations and phased array radar experiments, the proposed SPFC and RSPFC methods are validated to yield superior beam pointing accuracies and can improve the fluctuations in angle tracking.

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“…Most research work so far address the mean value of parasitic SLL [3], [4], [5] due to quantization in arrays with isotropic elements. Further, this mean parasitic SLL effect is analysed usually for large arrays, based on an approximation wherein the summation in the array factors are converted into integrals.…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Achievable Highest SLL in Moderate Phased Arrays with Quantized Control

Kochar

Vinoy

2019

2019 IEEE MTT-S International Microwave and RF Conference (IMARC)

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Phased arrays with discrete control circuitry for amplitudes and phases are analysed to investigate the impact of finite resolution phase sifters and RF attenuators on the achievable highest side lobe level (HSLL). Finite dynamic range offered by RF attenuators also limits the value of HSLL that can be achieved. The achieved HSLL may lie between 25 to 40 dB for practical values of dynamic range, depending on the array size and number of control bits. This aspect is studied for Chebyshev and discrete prolate spheroidal sequences (DPSS) arrays of different lengths. Finally, a novel approach for quantizing phases is proposed for reducing HSLL degradation.

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New methods of reducing the phase quantization error effects on beam pointing and parasitic side lobe level of the phased array antennas

Cited by 14 publications

References 2 publications

Design of a 2-Bit Reconfigurable UWB Planar Antenna Array for Beam Scanning Application

Design of a 2-Bit Reconfigurable UWB Planar Antenna Array for Beam Scanning Application

Random symmetric phase feeding compensation method for phased array radar based on equivalent monopulse model

An Analysis of Achievable Highest SLL in Moderate Phased Arrays with Quantized Control

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