Reflector analysis for novel OTA test method

A. Loaiza Freire; T. G. Pelham; G. Hilton; M. Beach

doi:10.23919/EuCAP51087.2021.9411088

Reflector analysis for novel OTA test method

A. Loaiza Freire, T. G. Pelham, G. Hilton, M. Beach

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Abstract

The use of millimetre waves (mmWaves) have required the design of novel OTA test methods. A low-cost OTA methodology based on elliptical cylindrical reflector takes advantage of the reflective properties of the ellipse to perform conformance test of devices operating at mmWaves. Two types of flat reflectors have been compared to quantify the effect that deformations in their surfaces, in the order of millimetres, produce in the reflected signal at 24 GHz. The signal amplitude reflected from a copper substrate reflector, with a total height variation (THV) in its surface of 2.73 mm, is 3.2 dB lower than the signal amplitude reflected by a rigid certified (reference) aluminium cast tooling plate with a THV of 0.46 mm under the same conditions. In addition, the half power beamwidth (HPBW) of the reference reflector is 1° smaller than the HPBW produced by the substrate plate.

Original language	English
Title of host publication	15th European Conference on Antennas and Propagation, EuCAP 2021
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)	9788831299022
DOIs	https://doi.org/10.23919/EuCAP51087.2021.9411088
Publication status	Published - 22 Mar 2021
Event	15th European Conference on Antennas and Propagation, EuCAP 2021 - Dusseldorf, Germany Duration: 22 Mar 2021 → 26 Mar 2021

Publication series

Name	Proceedings of the European Conference on Antennas and Propagation (EUCAP)
ISSN (Print)	2164-3342

Conference

Conference	15th European Conference on Antennas and Propagation, EuCAP 2021
Country/Territory	Germany
City	Dusseldorf
Period	22/03/21 → 26/03/21

Bibliographical note

Publisher Copyright:
© 2021 EurAAP.

Keywords

Flatness
OTA
reflection
surface roughness

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10.23919/EuCAP51087.2021.9411088

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Freire, A. L., Pelham, T. G., Hilton, G., & Beach, M. (2021). Reflector analysis for novel OTA test method. In 15th European Conference on Antennas and Propagation, EuCAP 2021 Article 9411088 (Proceedings of the European Conference on Antennas and Propagation (EUCAP)). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.23919/EuCAP51087.2021.9411088

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title = "Reflector analysis for novel OTA test method",

abstract = "The use of millimetre waves (mmWaves) have required the design of novel OTA test methods. A low-cost OTA methodology based on elliptical cylindrical reflector takes advantage of the reflective properties of the ellipse to perform conformance test of devices operating at mmWaves. Two types of flat reflectors have been compared to quantify the effect that deformations in their surfaces, in the order of millimetres, produce in the reflected signal at 24 GHz. The signal amplitude reflected from a copper substrate reflector, with a total height variation (THV) in its surface of 2.73 mm, is 3.2 dB lower than the signal amplitude reflected by a rigid certified (reference) aluminium cast tooling plate with a THV of 0.46 mm under the same conditions. In addition, the half power beamwidth (HPBW) of the reference reflector is 1° smaller than the HPBW produced by the substrate plate.",

keywords = "Flatness, OTA, reflection, surface roughness",

author = "Freire, {A. Loaiza} and Pelham, {T. G.} and G. Hilton and M. Beach",

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language = "English",

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Freire, AL, Pelham, TG , Hilton, G & Beach, M 2021, Reflector analysis for novel OTA test method. in 15th European Conference on Antennas and Propagation, EuCAP 2021., 9411088, Proceedings of the European Conference on Antennas and Propagation (EUCAP), Institute of Electrical and Electronics Engineers (IEEE), 15th European Conference on Antennas and Propagation, EuCAP 2021, Dusseldorf, Germany, 22/03/21. https://doi.org/10.23919/EuCAP51087.2021.9411088

Reflector analysis for novel OTA test method. / Freire, A. Loaiza; Pelham, T. G.; Hilton, G. et al.
15th European Conference on Antennas and Propagation, EuCAP 2021. Institute of Electrical and Electronics Engineers (IEEE), 2021. 9411088 (Proceedings of the European Conference on Antennas and Propagation (EUCAP)).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Reflector analysis for novel OTA test method

AU - Freire, A. Loaiza

AU - Pelham, T. G.

AU - Hilton, G.

AU - Beach, M.

PY - 2021/3/22

Y1 - 2021/3/22

N2 - The use of millimetre waves (mmWaves) have required the design of novel OTA test methods. A low-cost OTA methodology based on elliptical cylindrical reflector takes advantage of the reflective properties of the ellipse to perform conformance test of devices operating at mmWaves. Two types of flat reflectors have been compared to quantify the effect that deformations in their surfaces, in the order of millimetres, produce in the reflected signal at 24 GHz. The signal amplitude reflected from a copper substrate reflector, with a total height variation (THV) in its surface of 2.73 mm, is 3.2 dB lower than the signal amplitude reflected by a rigid certified (reference) aluminium cast tooling plate with a THV of 0.46 mm under the same conditions. In addition, the half power beamwidth (HPBW) of the reference reflector is 1° smaller than the HPBW produced by the substrate plate.

AB - The use of millimetre waves (mmWaves) have required the design of novel OTA test methods. A low-cost OTA methodology based on elliptical cylindrical reflector takes advantage of the reflective properties of the ellipse to perform conformance test of devices operating at mmWaves. Two types of flat reflectors have been compared to quantify the effect that deformations in their surfaces, in the order of millimetres, produce in the reflected signal at 24 GHz. The signal amplitude reflected from a copper substrate reflector, with a total height variation (THV) in its surface of 2.73 mm, is 3.2 dB lower than the signal amplitude reflected by a rigid certified (reference) aluminium cast tooling plate with a THV of 0.46 mm under the same conditions. In addition, the half power beamwidth (HPBW) of the reference reflector is 1° smaller than the HPBW produced by the substrate plate.

KW - Flatness

KW - OTA

KW - reflection

KW - surface roughness

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M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:85105510419

T3 - Proceedings of the European Conference on Antennas and Propagation (EUCAP)

BT - 15th European Conference on Antennas and Propagation, EuCAP 2021

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 15th European Conference on Antennas and Propagation, EuCAP 2021

Y2 - 22 March 2021 through 26 March 2021

ER -

Reflector analysis for novel OTA test method

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Keywords

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