Calibrated Design of Beam-Steerable Antennas Fed by Varactor-Based Phase Shifters

Yuan Yuan, Shengjian Jammy Chen, Christophe Fumeaux

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

An accurate calibration procedure is proposed for a single-feed beam-steerable antenna controlled by varactor-based phase shifters working in differential pairs. The calibration is based on the performance curve of every phase shifter measured from dedicated sampling points on the circuit. A fast selection algorithm based on multi-objective optimization is employed to obtain the control voltages for all differential phase shifter pairs, according to the required phase differences. The final control voltages for a particular beam configuration are validated and fine-tuned on-board at the sampling points. To verify the effectiveness of this procedure, calibrated null-scanning of an 1 × 4 array is demonstrated. The calibrated array can realize null-scanning from -30° to 30° with a null-depth smaller than -21 dB and a null-position tolerance less than 2.5° from 4.75 to 5.25 GHz. These experimentally validated results suggest that the proposed calibration procedure is accurate for beam-scanning arrays fed by varactor-based phase shifters.

Original languageEnglish
Title of host publication17th European Conference on Antennas and Propagation, EuCAP 2023
PublisherInstitute of Electrical and Electronics Engineers
Number of pages5
ISBN (Electronic)9788831299077
DOIs
Publication statusPublished - 31 May 2023
Event17th European Conference on Antennas and Propagation, EuCAP 2023 - Florence, Italy
Duration: 26 Mar 202331 Mar 2023

Publication series

Name17th European Conference on Antennas and Propagation, EuCAP 2023

Conference

Conference17th European Conference on Antennas and Propagation, EuCAP 2023
Country/TerritoryItaly
CityFlorence
Period26/03/2331/03/23

Keywords

  • beam-steering antennas
  • Calibration procedure
  • null-scanning
  • varactor-based phase shifters

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