A Small-Size Dual-Feed Broadband Circularly Polarized U-Slot Patch Antenna

Mang He; Xihong Ye; Pingyuan Zhou; Guoqiang Zhao; Chuanfang Zhang; Houjun Sun

doi:10.1109/LAWP.2014.2384496

A Small-Size Dual-Feed Broadband Circularly Polarized U-Slot Patch Antenna

Mang He, Xihong Ye, Pingyuan Zhou, Guoqiang Zhao, Chuanfang Zhang, Houjun Sun

School of Integrated Circuits and Electronics

Beijing Institute of Technology

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

54 Citations (Scopus)

Abstract

A small-size broadband circularly polarized U-slot patch antenna with dual-feed is proposed. By introducing an additional feeding probe near the vertical slot of the conventional singly fed square U-slot patch antenna printed on a high-permittivity substrate, two series resonances in close proximity are excited. The two resonant frequencies are found to be independent of the orientation of U-slot with respect to the patch, and broadband circular polarization is achieved by introducing a nonquadrature phase difference between two feeding ports. Experimental results show that the overlapped bandwidth of VSWR ≤ 1.5 and AR ≤ 3 dB is over 20% with a small overall size of 0.33λ₀ × 0.33λ₀ × 0.068λ₀, where λ₀ is the free-space wavelength at the center frequency within the operating band.

Original language	English
Article number	6994273
Pages (from-to)	898-901
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	14
DOIs	https://doi.org/10.1109/LAWP.2014.2384496
Publication status	Published - 2015

Keywords

Broadband
U-slot patch patch antenna
circular polarization
small size

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10.1109/LAWP.2014.2384496

Cite this

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title = "A Small-Size Dual-Feed Broadband Circularly Polarized U-Slot Patch Antenna",

abstract = "A small-size broadband circularly polarized U-slot patch antenna with dual-feed is proposed. By introducing an additional feeding probe near the vertical slot of the conventional singly fed square U-slot patch antenna printed on a high-permittivity substrate, two series resonances in close proximity are excited. The two resonant frequencies are found to be independent of the orientation of U-slot with respect to the patch, and broadband circular polarization is achieved by introducing a nonquadrature phase difference between two feeding ports. Experimental results show that the overlapped bandwidth of VSWR ≤ 1.5 and AR ≤ 3 dB is over 20% with a small overall size of 0.33λ0 × 0.33λ0 × 0.068λ0, where λ0 is the free-space wavelength at the center frequency within the operating band.",

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author = "Mang He and Xihong Ye and Pingyuan Zhou and Guoqiang Zhao and Chuanfang Zhang and Houjun Sun",

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language = "English",

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AU - He, Mang

AU - Ye, Xihong

AU - Zhou, Pingyuan

AU - Zhao, Guoqiang

AU - Zhang, Chuanfang

AU - Sun, Houjun

PY - 2015

Y1 - 2015

N2 - A small-size broadband circularly polarized U-slot patch antenna with dual-feed is proposed. By introducing an additional feeding probe near the vertical slot of the conventional singly fed square U-slot patch antenna printed on a high-permittivity substrate, two series resonances in close proximity are excited. The two resonant frequencies are found to be independent of the orientation of U-slot with respect to the patch, and broadband circular polarization is achieved by introducing a nonquadrature phase difference between two feeding ports. Experimental results show that the overlapped bandwidth of VSWR ≤ 1.5 and AR ≤ 3 dB is over 20% with a small overall size of 0.33λ0 × 0.33λ0 × 0.068λ0, where λ0 is the free-space wavelength at the center frequency within the operating band.

AB - A small-size broadband circularly polarized U-slot patch antenna with dual-feed is proposed. By introducing an additional feeding probe near the vertical slot of the conventional singly fed square U-slot patch antenna printed on a high-permittivity substrate, two series resonances in close proximity are excited. The two resonant frequencies are found to be independent of the orientation of U-slot with respect to the patch, and broadband circular polarization is achieved by introducing a nonquadrature phase difference between two feeding ports. Experimental results show that the overlapped bandwidth of VSWR ≤ 1.5 and AR ≤ 3 dB is over 20% with a small overall size of 0.33λ0 × 0.33λ0 × 0.068λ0, where λ0 is the free-space wavelength at the center frequency within the operating band.

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A Small-Size Dual-Feed Broadband Circularly Polarized U-Slot Patch Antenna

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