Demonstration of a Reflectarray With Near-Field Amplitude and Phase Constraints as Compact Antenna Test Range Probe for 5G New Radio Devices

Vaquero, Álvaro F.; Arrebola, Manuel; Pino, Marcos R.; Florencio, Rafael; Encinar, José A.

doi:10.1109/tap.2020.3030969

Cited by 35 publications

(26 citation statements)

References 22 publications

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“…For the IRA, the constraints are imposed in the amplitude of the radiated near-field [30], while in the ORA are imposed in the far-field [32]. The horn antenna is accurately characterized with the electromagnetic software CST Microwave Studio [40].…”

Section: B Design Procedurementioning

confidence: 99%

“…In [29] it is proposed a multilayer reflectarray that generates a shaped pattern for a Local Multipoint Distribution System (LMDS). In [30], it is proposed a reflectarray for a 5G application to produce a field close to the antenna with amplitude and phase constraints. Nevertheless, printed reflectarrays have an inherent narrow bandwidth [31] but it is not a problem in mm-wave cellular networks when working in relatively small frequency slots (~ 400 MHz) [4].…”

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confidence: 99%

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Shaped-Pattern Reflectarray Antennas for mm-Wave Networks Using a Simple Cell Topology

et al. 2022

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Section: B Design Procedurementioning

confidence: 99%

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confidence: 99%

Shaped-Pattern Reflectarray Antennas for mm-Wave Networks Using a Simple Cell Topology

et al. 2022

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“…Some of these unit cells have been employed in other works for the design of reflectarray antennas. For instance, (b) is taken from [24], (c) from [25] and (d) from [26]. The results for a design using unit cell (a) are unpublished.…”

Section: Problem Statementmentioning

confidence: 99%

Systematic Study of the Influence of the Angle of Incidence Discretization in Reflectarray Analysis to Improve Support Vector Regression Surrogate Models

2020

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A systematic study concerning the discretization of the angle of incidence in surrogate models obtained with support vector regression (SVR) is presented. The problem addressed in this work arises from the dependence of the reflection coefficients on the angle of incidence. While the direct coefficients are usually stable with the angle of incidence, this is not the case with the cross-coefficients, which translates this behavior to the crosspolar component of the radiation pattern. Then, correctly assessing this influence and minimizing radiation pattern distortion allow training SVR surrogate models per angle of incidence without penalizing accuracy in the prediction of the far field. The results shown in this work are directly relevant to improving the computational performance of SVRs applied to reflectarray design since they allow reducing the dimensionality of the models by generating surrogate models per angle of incidence instead of including the angles of incidence as input variables. In addition, it highlights the importance of a proper discretization of the angles of incidence for a correct prediction of the crosspolar pattern for its subsequent optimization, especially for advanced space applications with tight crosspolar requirements.

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“…CATR represents a powerful and suitable methodology for the characterization of radiation characteristics of 5G devices due to its advantages in millimeter wave measurement. [4][5][6] However, the requirements for the amplitude and phase characteristics of the quiet zone (QZ) are very high. QZ refers to the area with small reflection level, which is generally used as the test area of the device under test.…”

Section: Introductionmentioning

confidence: 99%

Corrugated horn with stable phase center for Ka‐band compact antenna test range measurement systems

Cai

Zhou

Weng

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this article, a corrugated horn feed antenna with a stable phase center is designed for the millimeter wave compact antenna test range (CATR). The calculation method of the phase center of a horn is analyzed in this article.The 45 -plane phase center is used as the combined phase center of the horn in order to perform the phase center calculation only once, thus faster, and to optimize the phase performance more conveniently. By adding an absorbing material surrounding the edge of the outer surface of the horn, the irregular currents on the outer surface of the horn are suppressed, thus achieving a more stable phase center. The absorbing material can also reduce the radar cross section of the antenna. The designed corrugated horn works in the 24-40 GHz wide band with the following performances: the deviation of the phase center in the working frequency band is less than ±0.25 mm, the phase variation within a ±30 beam width is less than ±2.5 . Moreover, the measured return loss is lower than À10 dB, the measured gain is 8-12 dBi, and the measured cross-polarization level is less than À30 dB. The beamwidth is about 56 -70 in the whole band, and the beamwidth difference between different planes is less than 5 . The achieved targets listed above makes the proposed corrugated horn suitable for very precise antenna measurements in CATR systems.

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Demonstration of a Reflectarray With Near-Field Amplitude and Phase Constraints as Compact Antenna Test Range Probe for 5G New Radio Devices

Cited by 35 publications

References 22 publications

Shaped-Pattern Reflectarray Antennas for mm-Wave Networks Using a Simple Cell Topology

Shaped-Pattern Reflectarray Antennas for mm-Wave Networks Using a Simple Cell Topology

Systematic Study of the Influence of the Angle of Incidence Discretization in Reflectarray Analysis to Improve Support Vector Regression Surrogate Models

Corrugated horn with stable phase center for Ka‐band compact antenna test range measurement systems

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