Development of Microwave Tomography System Based on Arduino NANO and PocketVNA

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Abstract

In this research study a Microwave-based Tomography (MWT) system is developed as a low cost system which consists of a microcomputer-based data acquisition module that obtains data from a PocketVNA and a mechanical system based on stepper motors which are used to control the angular positions of the Vivaldi antennas along a circular path around the observed object. The stepper motors are driven through motor drivers and an Arduino board. The used Vivaldi antennas can be operated as microwave transceivers from frequency of 1.5 GHz to 9 GHz, while the PocketVNA is used to measure the transmission and reflection coefficients (S11and S12), magnitude and phase of the microwave that have a frequency range of 500 kHz to 4 GHz. Measurements in this study were carried out in the frequency range of 3-3.78 GHz with an increase in frequency of every 0.5 GHz, and measurements were executed 5 times at each angle position, while the antenna position was shifted every a 5°. The test object used was in the form of an octagonal iron metal and cylindrical metal also nylon or polyethylene. The images of the reconstruction process based on Born approximation algorithm significantly illustrates the shape and cross section of the test object.

Original languageEnglish
Title of host publicationProceedings - CAMA 2019
Subtitle of host publicationIEEE International Conference on Antenna Measurements and Applications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages271-274
Number of pages4
ISBN (Electronic)9781728123967
DOIs
Publication statusPublished - Oct 2019
Event6th IEEE International Conference on Antenna Measurements and Applications, CAMA 2019 - Kuta, Bali, Indonesia
Duration: 23 Oct 201925 Oct 2019

Publication series

NameProceedings - CAMA 2019: IEEE International Conference on Antenna Measurements and Applications

Conference

Conference6th IEEE International Conference on Antenna Measurements and Applications, CAMA 2019
CountryIndonesia
CityKuta, Bali
Period23/10/1925/10/19

Keywords

  • Born Approximation
  • Microwave Tomography
  • Vector Network Analizer
  • Vivaldi Antenna

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