A Millimeter-Wave Wideband Low-Profile Folded Reflectarray Transceiver for Frequency-Diverse Near-Field Imaging

Xinhao Chen; Qingfeng Zhang; Baiyang Liu

10.1109/CSRSWTC60855.2023.10426988

2023

2378-1297

979-8-3503-5898-8

2023 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC)

1-4

10-13 Nov. 2023

Guilin, China

This paper presents a wideband, low-profile, folded reflectarray (FRA) antenna integrated as a transceiver for frequency-diverse near-field imaging. The FRA is composed of a polarization grid and a polarization conversion surface (PCS), re-ducing the feed height to $F$/2 with a single reflection. To provide frequency diversity to the imaging system, the FRA employs a 1-bit random encoding scheme. In order to increase measurement modes, a broadband cat-eyed polarization conversion unit is designed. The proposed polarization conversion unit exhibits a relative bandwidth of 91.6% (from 14 GHz to 37.67 GHz) with a polarization conversion ratio (PCR) exceeding 89%. To further reduce the profile of the imaging system, a corresponding wide-band dual-polarized horn antenna is designed as a transceiver. The proposed imaging system is able to detect a moving object and reconstruct a rectangle object. The proposed transceiver has the potential of integrated sensing and communication for the future 6G.

Folded reflectarray low profile frequency-diverse microwave imaging polarization conversion

第一

IEEE

Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China

Xinhao Chen,Qingfeng Zhang,Baiyang Liu. A Millimeter-Wave Wideband Low-Profile Folded Reflectarray Transceiver for Frequency-Diverse Near-Field Imaging[C],2023:1-4.