Calibration approaches in Multi-Node Antenna Characterization Setups

R.A. Coesoij, F.A. Musters, D. Roos, T. van Velden, M. Spirito

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

In this work we present calibration approaches aimed at mitigating the measurement error in testbenches featuring multiple sensor-nodes and operating over-the-air. Such errors can arise from fluctuations in component responses and mechanical tolerances of the setup. The calibration approaches are detailed for the case of the Antenna Dome measurement setup previously presented by the authors.In the current implementation, the Antenna Dome employs multiple dual linearly-polarized scalar sensing nodes, to enable real-time 2D (theta and phi) radiation pattern acquisition. The variation of the electrical response among the different sensing elements as well as their position, with respect to the nominal one, due to the mechanical tolerances, introduce systematic error in the generated radiation patterns.Over-the-air procedures to linearize the power conversion asymmetry within the dually polarized nodes as well as the linearity response across them are described. Proposed approach provides a reduction of the angular dependent error within ±0.5 dB across the various nodes. Moreover, to minimize the impact of mechanical deviations an over-the-air method is described to transfer the sensor coordinates from the mechanical reference system to the antenna under test one.
Original languageEnglish
Title of host publicationProceedings of the 2023 100th ARFTG Microwave Measurement Conference (ARFTG)
PublisherIEEE
Pages1-4
Number of pages4
ISBN (Electronic)978-1-6654-7494-8
ISBN (Print)978-1-6654-7495-5
DOIs
Publication statusPublished - 2023
Event2023 100th ARFTG Microwave Measurement Conference (ARFTG) - Las Vegas, United States
Duration: 22 Jan 202325 Jan 2023

Conference

Conference2023 100th ARFTG Microwave Measurement Conference (ARFTG)
Country/TerritoryUnited States
CityLas Vegas
Period22/01/2325/01/23

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • [multi-probe
  • antenna measurement
  • over-the-air
  • scalar radiation pattern
  • dual-polarized
  • polarization , detector]

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