International Symposium on Telecommunication (IST)

Home / 11th International Symposium on Telecommunication (IST'2024)

A Sparse Multi-static Circular Array for Millimeter Wave Imaging system

Authors :

Mohammad Reza Moravejolahkami¹ Hojatollah Zamani² Mohammad Fakharzadeh³

1- Student 2- Postdoc 3- Associate Professor at School of Electrical and Computer Engineering, Sharif University of Technology Tehran, Iran

Keywords :

Millimeter wave imaging system،sparse arrary،circular array،compressed sensing

Abstract :

In this paper, we address the problem of millimeter- wave imaging using a multistatic circular array. Circular array provides uniform omnidirectional beamforming, and simplified beam steering with the ability of full 360-degree coverage. It offers less grating lobes compared to planar arrays which improves signal quality. In this work, we focus on designing a sparse structure while maintaining the concept of the circular array with the objective of scanning the top view of the human body. The design is based on the compressed sensing model which allows us to design a very sparse structure. The proposed structure includes two sparse rings that use only 10 transmitters on one ring and 20 receivers on another ring. In total, 93.32% element reduction concerning a uniform double-ring array is achieved. The simulation results support our design and using the CS model, successful reconstruction has been obtained with the quality of more than 20dB.