Cavity-Backed Circularly Polarized Cross-Dipole Phased Arrays

Ling Kai Zhang; Yue Xian Wang; Jian Ying Li; Yao Feng; Wei Zhang

doi:10.1109/LAWP.2021.3092148

Cavity-Backed Circularly Polarized Cross-Dipole Phased Arrays

Ling Kai Zhang, Yue Xian Wang, Jian Ying Li, Yao Feng, Wei Zhang

School of Electronics and Information

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

18 Scopus citations

Abstract

In this letter, a 16 × 16 Ku-band circularly polarized phased array is proposed. The antenna element comprises a cross dipole, a metal cavity, and a threaded SMP connector. The metal cavity makes the gain of the antenna increased and the mutual coupling between the array elements is reduced, thus ensuring good impedance matching and axis ratio (AR) during the two-dimensional beam scanning. The mutual coupling of the center element at center frequency is-26.6 dB when the cavity is added. The proposed phased array achieves the impedance bandwidth (|S11| ≤-10 dB) of 10.1% (13.1-14.5GHz) when scanning ±40° in the xz plane and yz plane. AR of the main lobe is less than 2 dB in the total scanning range. The gain fluctuation is less than 3 dB during scanning. This letter presents the measurement and simulation results, verifying that the phased array has good performance.

Original language	English
Article number	9464701
Pages (from-to)	1656-1660
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	20
Issue number	9
DOIs	https://doi.org/10.1109/LAWP.2021.3092148
State	Published - Sep 2021

Keywords

Cavity-backed (CB)
Ku-band
circularly polarized (CP)
cross-dipole antenna
phased array

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10.1109/LAWP.2021.3092148

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title = "Cavity-Backed Circularly Polarized Cross-Dipole Phased Arrays",

abstract = "In this letter, a 16 × 16 Ku-band circularly polarized phased array is proposed. The antenna element comprises a cross dipole, a metal cavity, and a threaded SMP connector. The metal cavity makes the gain of the antenna increased and the mutual coupling between the array elements is reduced, thus ensuring good impedance matching and axis ratio (AR) during the two-dimensional beam scanning. The mutual coupling of the center element at center frequency is-26.6 dB when the cavity is added. The proposed phased array achieves the impedance bandwidth (|S11| ≤-10 dB) of 10.1% (13.1-14.5GHz) when scanning ±40° in the xz plane and yz plane. AR of the main lobe is less than 2 dB in the total scanning range. The gain fluctuation is less than 3 dB during scanning. This letter presents the measurement and simulation results, verifying that the phased array has good performance.",

keywords = "Cavity-backed (CB), Ku-band, circularly polarized (CP), cross-dipole antenna, phased array",

author = "Zhang, {Ling Kai} and Wang, {Yue Xian} and Li, {Jian Ying} and Yao Feng and Wei Zhang",

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

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AU - Zhang, Ling Kai

AU - Wang, Yue Xian

AU - Li, Jian Ying

AU - Feng, Yao

AU - Zhang, Wei

PY - 2021/9

Y1 - 2021/9

N2 - In this letter, a 16 × 16 Ku-band circularly polarized phased array is proposed. The antenna element comprises a cross dipole, a metal cavity, and a threaded SMP connector. The metal cavity makes the gain of the antenna increased and the mutual coupling between the array elements is reduced, thus ensuring good impedance matching and axis ratio (AR) during the two-dimensional beam scanning. The mutual coupling of the center element at center frequency is-26.6 dB when the cavity is added. The proposed phased array achieves the impedance bandwidth (|S11| ≤-10 dB) of 10.1% (13.1-14.5GHz) when scanning ±40° in the xz plane and yz plane. AR of the main lobe is less than 2 dB in the total scanning range. The gain fluctuation is less than 3 dB during scanning. This letter presents the measurement and simulation results, verifying that the phased array has good performance.

AB - In this letter, a 16 × 16 Ku-band circularly polarized phased array is proposed. The antenna element comprises a cross dipole, a metal cavity, and a threaded SMP connector. The metal cavity makes the gain of the antenna increased and the mutual coupling between the array elements is reduced, thus ensuring good impedance matching and axis ratio (AR) during the two-dimensional beam scanning. The mutual coupling of the center element at center frequency is-26.6 dB when the cavity is added. The proposed phased array achieves the impedance bandwidth (|S11| ≤-10 dB) of 10.1% (13.1-14.5GHz) when scanning ±40° in the xz plane and yz plane. AR of the main lobe is less than 2 dB in the total scanning range. The gain fluctuation is less than 3 dB during scanning. This letter presents the measurement and simulation results, verifying that the phased array has good performance.

KW - Cavity-backed (CB)

KW - Ku-band

KW - circularly polarized (CP)

KW - cross-dipole antenna

KW - phased array

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DO - 10.1109/LAWP.2021.3092148

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JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

IS - 9

M1 - 9464701

ER -

Cavity-Backed Circularly Polarized Cross-Dipole Phased Arrays

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