Monopulse switching to cancel phase offset in array antenna comprising multiple COTS SDRs

Masato Miyazawa, Jin Mitsugi, Yuusuke Kawakita, Haruhisa Ichikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a phase offset canceler for an array antenna, which comprises multiple low-cost commercial of the shelf (COTS) software defined radio (SDR) devices. The main challenge is the phase synchronization of SDR devices because each SDR devices has its own phase offset when it produces IQ stream. We devise a simple yet effective method to cancel the phase offset of individual SDR device using a double-pole, double-throw (DPDT) switch which is implemented between antenna and SDR device. The DPDT switch is controlled according to the frame timing of each IQ stream to produce two set of measurements, from which we can compute angle of arrival(AoA) with a simple signal processing. We refer this mechanism as 'Monopulse Switching'. We evaluated the working principle experimentally to reveal Monopulse switching successfully cancel phase offset to detect AoA without any initial calibration and achieves 2.8 degree measurement accuracy.

Original languageEnglish
Title of host publication2016 IEEE International Conference on RFID Technology and Applications, RFID-TA 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages65-70
Number of pages6
ISBN (Electronic)9781509014088
DOIs
Publication statusPublished - 2016 Nov 21
Event2016 IEEE International Conference on RFID Technology and Applications, RFID-TA 2016 - Shunde, Foshan, China
Duration: 2016 Sep 212016 Sep 23

Publication series

Name2016 IEEE International Conference on RFID Technology and Applications, RFID-TA 2016

Other

Other2016 IEEE International Conference on RFID Technology and Applications, RFID-TA 2016
CountryChina
CityShunde, Foshan
Period16/9/2116/9/23

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Keywords

  • Array antenna
  • Coherent receiver
  • Complex monopulse
  • Software Defined Radio

ASJC Scopus subject areas

  • Instrumentation
  • Computer Networks and Communications

Cite this

Miyazawa, M., Mitsugi, J., Kawakita, Y., & Ichikawa, H. (2016). Monopulse switching to cancel phase offset in array antenna comprising multiple COTS SDRs. In 2016 IEEE International Conference on RFID Technology and Applications, RFID-TA 2016 (pp. 65-70). [7750752] (2016 IEEE International Conference on RFID Technology and Applications, RFID-TA 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RFID-TA.2016.7750752