Beam-pointing errors of planar-phased arrays

Carver, K.; Cooper, W. E.; Stutzman, W.L.

doi:10.1109/tap.1973.1140434

Cited by 46 publications

(14 citation statements)

References 3 publications

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“…Obviously, the compensated control bits of the attenuators cause the additional phase changes. However, the related beam pointing error is negligible when a 6-bit phase shifter is utilized in the antenna unit (comprising 256 elements) [8], [22]- [24].…”

Section: Verificationmentioning

confidence: 99%

Accurate Characterization of T/R Modules with Consideration of Amplitude/Phase Cross Effect in AESA Antenna Unit

Ahn

Chon²,

Kim³

et al. 2016

ETRI J

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In this paper, an accurate characterization of a fabricated X-band transmit/receive module is described with the process of generating control data to correct amplitude and phase deviations in an active electronically scanned array antenna unit. In the characterization, quantization errors (from both a digitally controlled attenuator and a phase shifter) are considered using not theoretical values (due to discrete sets of amplitude and phase states) but measured values (of which implementation errors are a part). By using the presented procedure for the characterization, each initial control bit of both the attenuator and the phase shifter is closest to the required value for each array element position. In addition, each compensated control bit for the parasitic cross effect between amplitude and phase control is decided using the same procedure. Reduction of the peak sidelobe level of an array antenna is presented as an example to validate the proposed procedure.

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Section: Verificationmentioning

confidence: 99%

Accurate Characterization of T/R Modules with Consideration of Amplitude/Phase Cross Effect in AESA Antenna Unit

Ahn

Chon²,

Kim³

et al. 2016

ETRI J

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show abstract

“…according to [6], where w n describes the amplitude weighting of the n-th antenna element, k the wave number and σ ϕ the standard deviation of the phase error. From Eq.…”

Section: Influences Of Errorsmentioning

confidence: 99%

Error analysis and self-calibration of a digital beamforming radar system

Harter

Ziroff

Hildebrandt

et al. 2015

2015 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM)

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Given the complexity of a radar system with Digital Beamforming a number of error influences can appear due to hardware non-idealities, temperature drift and aging. These errors can result in a reduced target detection probability or even lead to false detections. According to their appearance in the presented radar system their effects are analyzed with respect to the angular spectrum estimation. A software-based self-calibration algorithm is proposed and evaluated by means of simulations and measurements.

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“…Assuming that element position and orientation errors are subsumed into phase and amplitude errors, the beam pointing variance for linear array becomes (Rondinelli, 1959;Carver et al, 1973;Steinberg, 1976):…”

Section: Beam Pointing Errormentioning

confidence: 99%

Measurements and Tolerances

Hansen

2009

Phased Array Antennas

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Beam-pointing errors of planar-phased arrays

Cited by 46 publications

References 3 publications

Accurate Characterization of T/R Modules with Consideration of Amplitude/Phase Cross Effect in AESA Antenna Unit

Accurate Characterization of T/R Modules with Consideration of Amplitude/Phase Cross Effect in AESA Antenna Unit

Error analysis and self-calibration of a digital beamforming radar system

Measurements and Tolerances

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