Multiple CATR Reflector System for Multiple Angles of Arrival Measurements of 5G Millimeter Wave Devices

Rowell, Corbett; Derat, Benoît; Cardalda-Garcia, Adrian

doi:10.1109/access.2020.3038597

Cited by 11 publications

(8 citation statements)

References 4 publications

(4 reference statements)

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“…4 for the E -plane of a 20 dBi standard gain horn antenna operated at 40 GHz, for each reflector angle, where the antenna is placed at the far edge of the QZ. The complete results for the MU (standard deviation of the results) are tabulated and presented in [7] for: (1) all relevant frequencies, (2) both the peak realized gain and TRP (Total Radiated Power), (3) different reflector sizes, and (4) different locations inside the QZ. Close agreement is observed for the different reflector angles, demonstrating the accuracy of the multi-reflector CATR system for a full 30 cm QZ.…”

Section: Resultsmentioning

confidence: 99%

“…Previous publications have demonstrated the relevance and accuracy of the multi-reflector CATR solution with different setups [3, 7]. The main contribution of this paper is to demonstrate that the setup and measurements can be extended to more realistic test scenarios using commercially available 5G FR2 handsets.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 2 illustrates a typical CATR system where the spherical wave from the measurement feed antenna is transformed to a planar wave using the parabolic geometry of the reflector. More details about the reflector design used in this paper are described in [7].

Fig.…”

Section: Introductionmentioning

confidence: 99%

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Active 5G radio resource management measurements using a multiple CATR reflector system

Rowell

Garcia

Derat

2022

Int. J. Microw. Wireless Technol.

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This paper presents results for active and passive measurements using a novel method based on multiple compact antenna test range (CATR) reflectors to perform simultaneous multiple angle measurements in order to characterize the beam-forming characteristics in a real environment of the 5G devices operating in the millimeter wave frequency band: 24–44 GHz. The over-the-air (OTA) system generates four planar wavefronts with different incidence angles, realizing up to five pairs of angular spreads or four switched/simultaneous angles of arrival. The initial target application is radio resource management (RRM) testing, where the execution of mobility procedures and radio link monitoring of a 5G millimeter wave device are evaluated. The applicability of the multi-reflector approach to RRM testing is measured with commercial 5G handsets, through three test scenarios. The paper demonstrates that baseband (non OTA) testing is not sufficient for RRM FR2, as the results are influenced by the direction of arrival of the signal. It is further shown that OTA testing in a multi-reflector CATR system and a careful selection of a representative set of test directions is critical for full characterization of the performance of a wireless device operating in the millimeter wave bands.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Active 5G radio resource management measurements using a multiple CATR reflector system

Rowell

Garcia

Derat

2022

Int. J. Microw. Wireless Technol.

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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%

“…With the increasing demand for more bandwidth and higher data transmission rate, millimeter waves are gaining attention for the development of next‐generation mobile networks (i.e., 5G). CATR represents a powerful and suitable methodology for the characterization of radiation characteristics of 5G devices due to its advantages in millimeter wave measurement 4–6 . However, the requirements for the amplitude and phase characteristics of the quiet zone (QZ) are very high.…”

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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A novel metasurface lens antenna design for over‐the‐air testing in millimetre wave radio resource management measurement

Zhang

Wang

Xue

et al. 2023

IET Microwaves Antenna & Prop

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In millimetre wave (mmWave) frequency band, radio resource management (RRM) performance is characterised in plane wave conditions using radiated over‐the‐air test method, which is a challenging combination of protocol and radio frequency performance measurement. This article presents a novel design of multiple lens‐based compact antenna test ranges (CATRs) to simulate multiple angles of arrival from different base‐stations in RRM measurement. Only four lens‐based CATRs are proposed to create plane wave conditions at the device under test with six different angles of arrival and capable of accurately constructing the wireless propagation condition and minimising the diffraction and scattering between adjacent CATRs. The lens‐based CATR is the key element in the RRM measurement system, which is composed of a metasurface lens for phase alignment and a 2 × 2 feed array antenna for the emission of electromagnetic signals. The function and capability of the proposed lens‐based CATR is validated through simulation and measurement, that the worst‐case amplitude variation in the quiet zone region is lower than ±0.8 dB at 26 GHz, and phase variation is lower than ±7.5° in the designed quiet zone, which could be used in the fifth‐generation mmWave RRM measurement.

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Multiple CATR Reflector System for Multiple Angles of Arrival Measurements of 5G Millimeter Wave Devices

Cited by 11 publications

References 4 publications

Active 5G radio resource management measurements using a multiple CATR reflector system

Active 5G radio resource management measurements using a multiple CATR reflector system

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

A novel metasurface lens antenna design for over‐the‐air testing in millimetre wave radio resource management measurement

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