A New Concept of High-Resolution UWB Microwave Imaging System (UWB-MIS) Using Waveform-Diversity for Breast Cancer Applications

Document Type : Original Article

Authors

1 Instructor, Faculty of Electrical and Computer Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran

2 Associate Professor, Faculty of Electrical and Computer Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran

3 Professor, Faculty of Electrical and Computer Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran

Abstract

In this paper a modified Gaussian pulse stimulus is employed to improve the accuracy of tumor detection inside breast phantom for 2D reconstructed image results in cylindrical setup of the microwave imaging system. This pulse shaping puts more energy at higher frequencies in contrast with conventional Gaussian in impulse radar. Hence a wider bandwidth is available to achieve higher accuracy for precise spatial localization. In the following a simulated cylindrical setup of the microwave imaging system with a modified stimulated pulse will be generated. The main purpose of this paper is employing a new stimulating pulse to detect a tumor from a biological phantom for 2D visualization of time-domain results. In order to achieve the goal the advantages of generating a novel confocal image-reconstructing algorithm based on back-projection method will be employed. The advantage conferred by “high resolution imaging” is that more energy is used at reflected signal than with conventional confocal imaging, subsequently a relatively lower spatial resolution in identifying the reflected signal is achieved. Simulated results are presented to validate the effectiveness of the proposed method for precisely calculating the time-dependent location of targets.

Keywords

References

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Radar
Volume 8, Issue 2 - Serial Number 24
February 2021
Pages 121-129

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History

  • Receive Date: 08 July 2019
  • Revise Date: 07 May 2020
  • Accept Date: 21 October 2020
  • Publish Date: 21 December 2020

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