Design of a Low-Profile Dual-Band Shared-Aperture Circularly Polarized Phased Array

Wendong Liu; Yuanxi Cao; Juan Chen; Sen Yan

doi:10.1109/LAWP.2023.3329153

Design of a Low-Profile Dual-Band Shared-Aperture Circularly Polarized Phased Array

Wendong Liu
, Yuanxi Cao
, Juan Chen
, Sen Yan

Faculty of Electronic and Information Engineering

Xi'an Jiaotong University

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

12 Scopus citations

Abstract

A dual-band circularly polarized phased array is proposed for satellite communications. The low-band and high-band radiators are realized by a circular slot etched on a substrate-integrated waveguide (SIW) and a magnetoelectric (ME) dipole positioned at the center and the corners of the SIW, respectively. The low-band design combines two modes with broadside radiation patterns and a wide axial ratio (AR) bandwidth. The measurement of the array with four low-band and seven high-band elements demonstrates that both the -10 dB impedance bandwidth and the 3 dB AR bandwidths of broadside beams can cover 12.5-14.2 GHz and 16.8-18.5 GHz for the low and high band, respectively. For broadside beams, the 3 dB AR beamwidths in the phi = 0° plane are 76° and 32° at 13 and 18 GHz, respectively. For maximum scanning beams, the ARs within the 3 dB beamwidth are below 3 and 4.6 dB at 13 and 18 GHz, respectively.

Original language	English
Pages (from-to)	543-547
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	23
Issue number	2
DOIs	https://doi.org/10.1109/LAWP.2023.3329153
State	Published - 1 Feb 2024

Keywords

Circularly polarized
dual band
phased array antenna
shared-aperture

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10.1109/LAWP.2023.3329153

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title = "Design of a Low-Profile Dual-Band Shared-Aperture Circularly Polarized Phased Array",

abstract = "A dual-band circularly polarized phased array is proposed for satellite communications. The low-band and high-band radiators are realized by a circular slot etched on a substrate-integrated waveguide (SIW) and a magnetoelectric (ME) dipole positioned at the center and the corners of the SIW, respectively. The low-band design combines two modes with broadside radiation patterns and a wide axial ratio (AR) bandwidth. The measurement of the array with four low-band and seven high-band elements demonstrates that both the -10 dB impedance bandwidth and the 3 dB AR bandwidths of broadside beams can cover 12.5-14.2 GHz and 16.8-18.5 GHz for the low and high band, respectively. For broadside beams, the 3 dB AR beamwidths in the phi = 0° plane are 76° and 32° at 13 and 18 GHz, respectively. For maximum scanning beams, the ARs within the 3 dB beamwidth are below 3 and 4.6 dB at 13 and 18 GHz, respectively.",

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author = "Wendong Liu and Yuanxi Cao and Juan Chen and Sen Yan",

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AU - Liu, Wendong

AU - Cao, Yuanxi

AU - Chen, Juan

AU - Yan, Sen

PY - 2024/2/1

Y1 - 2024/2/1

N2 - A dual-band circularly polarized phased array is proposed for satellite communications. The low-band and high-band radiators are realized by a circular slot etched on a substrate-integrated waveguide (SIW) and a magnetoelectric (ME) dipole positioned at the center and the corners of the SIW, respectively. The low-band design combines two modes with broadside radiation patterns and a wide axial ratio (AR) bandwidth. The measurement of the array with four low-band and seven high-band elements demonstrates that both the -10 dB impedance bandwidth and the 3 dB AR bandwidths of broadside beams can cover 12.5-14.2 GHz and 16.8-18.5 GHz for the low and high band, respectively. For broadside beams, the 3 dB AR beamwidths in the phi = 0° plane are 76° and 32° at 13 and 18 GHz, respectively. For maximum scanning beams, the ARs within the 3 dB beamwidth are below 3 and 4.6 dB at 13 and 18 GHz, respectively.

AB - A dual-band circularly polarized phased array is proposed for satellite communications. The low-band and high-band radiators are realized by a circular slot etched on a substrate-integrated waveguide (SIW) and a magnetoelectric (ME) dipole positioned at the center and the corners of the SIW, respectively. The low-band design combines two modes with broadside radiation patterns and a wide axial ratio (AR) bandwidth. The measurement of the array with four low-band and seven high-band elements demonstrates that both the -10 dB impedance bandwidth and the 3 dB AR bandwidths of broadside beams can cover 12.5-14.2 GHz and 16.8-18.5 GHz for the low and high band, respectively. For broadside beams, the 3 dB AR beamwidths in the phi = 0° plane are 76° and 32° at 13 and 18 GHz, respectively. For maximum scanning beams, the ARs within the 3 dB beamwidth are below 3 and 4.6 dB at 13 and 18 GHz, respectively.

KW - Circularly polarized

KW - dual band

KW - phased array antenna

KW - shared-aperture

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DO - 10.1109/LAWP.2023.3329153

M3 - 文章

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VL - 23

SP - 543

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JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

IS - 2

ER -

Design of a Low-Profile Dual-Band Shared-Aperture Circularly Polarized Phased Array

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