A Phase-Controlled Parabolic Reflector for Wideband Microwave Focal-Plane Imaging

Tianheng Wang; Shenshen Luan; Meiling Yang; Yuanyuan Li; Shuguo Xie; Yan Yang

doi:10.1109/LAWP.2024.3454123

A Phase-Controlled Parabolic Reflector for Wideband Microwave Focal-Plane Imaging

Tianheng Wang
, Shenshen Luan
, Meiling Yang
, Yuanyuan Li
, Shuguo Xie
, Yan Yang^*

^*Corresponding author for this work

School of Electronic and Information Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

For focal-plane imaging of electromagnetic interference, the size of the point spread function (PSF) of the system varies significantly with frequency according to the Rayleigh criterion. For an imaging system with limited array sensors, high-frequency signals may be lost due to small PSF and spatial undersampling. To reduce the frequency variation in imaging systems, a wideband phase-controlled reflector (PCR) is proposed and verified in this article. First, the phase control element (PCE) is modeled and analyzed regarding the phase response of the reflected electromagnetic wave. Then, the distribution of the PCE on the reflector is designed and optimized considering the oblique incidence and periodic structure interference. The experimental results show that the proposed PCR can broaden the 3 dB beamwidth of the PSF by 60.71% averagely over the frequency range of 8 GHz to 12 GHz.

Original language	English
Pages (from-to)	3352-3356
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	23
Issue number	11
DOIs	https://doi.org/10.1109/LAWP.2024.3454123
State	Published - 2024

Keywords

Focal-plane imaging
microwave camera
microwave imaging
phase-controlled reflector (PCR)

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10.1109/LAWP.2024.3454123

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title = "A Phase-Controlled Parabolic Reflector for Wideband Microwave Focal-Plane Imaging",

abstract = "For focal-plane imaging of electromagnetic interference, the size of the point spread function (PSF) of the system varies significantly with frequency according to the Rayleigh criterion. For an imaging system with limited array sensors, high-frequency signals may be lost due to small PSF and spatial undersampling. To reduce the frequency variation in imaging systems, a wideband phase-controlled reflector (PCR) is proposed and verified in this article. First, the phase control element (PCE) is modeled and analyzed regarding the phase response of the reflected electromagnetic wave. Then, the distribution of the PCE on the reflector is designed and optimized considering the oblique incidence and periodic structure interference. The experimental results show that the proposed PCR can broaden the 3 dB beamwidth of the PSF by 60.71\% averagely over the frequency range of 8 GHz to 12 GHz.",

keywords = "Focal-plane imaging, microwave camera, microwave imaging, phase-controlled reflector (PCR)",

author = "Tianheng Wang and Shenshen Luan and Meiling Yang and Yuanyuan Li and Shuguo Xie and Yan Yang",

note = "Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

year = "2024",

doi = "10.1109/LAWP.2024.3454123",

language = "英语",

volume = "23",

pages = "3352--3356",

journal = "IEEE Antennas and Wireless Propagation Letters",

issn = "1536-1225",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "11",

}

TY - JOUR

T1 - A Phase-Controlled Parabolic Reflector for Wideband Microwave Focal-Plane Imaging

AU - Wang, Tianheng

AU - Luan, Shenshen

AU - Yang, Meiling

AU - Li, Yuanyuan

AU - Xie, Shuguo

AU - Yang, Yan

PY - 2024

Y1 - 2024

N2 - For focal-plane imaging of electromagnetic interference, the size of the point spread function (PSF) of the system varies significantly with frequency according to the Rayleigh criterion. For an imaging system with limited array sensors, high-frequency signals may be lost due to small PSF and spatial undersampling. To reduce the frequency variation in imaging systems, a wideband phase-controlled reflector (PCR) is proposed and verified in this article. First, the phase control element (PCE) is modeled and analyzed regarding the phase response of the reflected electromagnetic wave. Then, the distribution of the PCE on the reflector is designed and optimized considering the oblique incidence and periodic structure interference. The experimental results show that the proposed PCR can broaden the 3 dB beamwidth of the PSF by 60.71% averagely over the frequency range of 8 GHz to 12 GHz.

AB - For focal-plane imaging of electromagnetic interference, the size of the point spread function (PSF) of the system varies significantly with frequency according to the Rayleigh criterion. For an imaging system with limited array sensors, high-frequency signals may be lost due to small PSF and spatial undersampling. To reduce the frequency variation in imaging systems, a wideband phase-controlled reflector (PCR) is proposed and verified in this article. First, the phase control element (PCE) is modeled and analyzed regarding the phase response of the reflected electromagnetic wave. Then, the distribution of the PCE on the reflector is designed and optimized considering the oblique incidence and periodic structure interference. The experimental results show that the proposed PCR can broaden the 3 dB beamwidth of the PSF by 60.71% averagely over the frequency range of 8 GHz to 12 GHz.

KW - Focal-plane imaging

KW - microwave camera

KW - microwave imaging

KW - phase-controlled reflector (PCR)

UR - https://www.scopus.com/pages/publications/85204137311

U2 - 10.1109/LAWP.2024.3454123

DO - 10.1109/LAWP.2024.3454123

M3 - 文章

AN - SCOPUS:85204137311

SN - 1536-1225

VL - 23

SP - 3352

EP - 3356

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

IS - 11

ER -

A Phase-Controlled Parabolic Reflector for Wideband Microwave Focal-Plane Imaging

Abstract

Keywords

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