Wideband RF Self-Interference Cancellation for FMCW Phased-Array Radar

Chengzhe Shi; Wensheng Pan; Xiangjie Xia; Nanzhou Hu; Changqing Song; Shihai Shao; Jiudong Zheng; Hongchao Wu

doi:10.1109/ACCESS.2020.3044959

IEEE Access (Jan 2020)

Wideband RF Self-Interference Cancellation for FMCW Phased-Array Radar

Chengzhe Shi,
Wensheng Pan,
Xiangjie Xia,
Nanzhou Hu,
Changqing Song,
Shihai Shao,
Jiudong Zheng,
Hongchao Wu

Affiliations

Chengzhe Shi: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Wensheng Pan: National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Xiangjie Xia: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Nanzhou Hu: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Changqing Song: National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Shihai Shao: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Jiudong Zheng: The 14th Research Institute, China Electronics Technology Group Corporation, Nanjing, China
Hongchao Wu: The 14th Research Institute, China Electronics Technology Group Corporation, Nanjing, China

DOI: https://doi.org/10.1109/ACCESS.2020.3044959
Journal volume & issue: Vol. 8
pp. 225284 – 225293

Abstract

Read online

A segmented self-interference cancellation (SSIC) method is proposed for frequency-modulated continuous-wave phased-array radar for canceling wideband multipath self-interference (SI) signals. A radio frequency canceller based on the SSIC method that uses the time-frequency segmentation equivalence of the linear frequency-modulated (LFM) signal is designed that can convert wideband SI cancellation (SIC) into several narrowband SICs. Numerical and simulation results show that the proposed method can achieve better cancellation performance with lower hardware complexity than the conventional multi-tap SI cancellation (MTSIC) method. Furthermore, the superior performance of the SSIC method is verified by experiments with a 250 MHz LFM signal.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords