A High Efficiency Slot Array Antenna Based on 2×3 Subarray

Xujing Yu; Shigang Zhou; Rong Xu; Jianying Li

doi:10.1109/LAWP.2025.3561584

A High Efficiency Slot Array Antenna Based on 2×3 Subarray

Xujing Yu, Shigang Zhou, Rong Xu, Jianying Li

School of Electronics and Information

Northwestern Polytechnical University Xian

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

Abstract

A high efficiency X-band monopulse slot array antenna based on a 2×3 elements subarray is designed and analyzed in this letter. The bottom layer of the antenna structure is a waveguide feed network for power distribution. The waveguide feed network transfers energy to the cavity array through coupling slots. Then, each cavity excites a 2×3 radiation slots array at the top layer. The subarray unit is used to form a larger array, providing flexibility in the size of the array antenna. Based on the 2×3 subarray, a 4×6 array antenna is designed and fabricated. At the center frequency in the X-band (8 GHz-10.4 GHz), the antenna achieves a gain of 21.5 dBi, a bandwidth of 26.1%, and a reflection coefficient below -10 dB. The measured efficiency of the array antenna exceeds 80% within the frequency band.

Original language	English
Journal	IEEE Antennas and Wireless Propagation Letters
DOIs	https://doi.org/10.1109/LAWP.2025.3561584
State	Accepted/In press - 2025

Keywords

High efficiency
planar array
slot antenna
waveguide feed network
wideband

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10.1109/LAWP.2025.3561584

Cite this

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title = "A High Efficiency Slot Array Antenna Based on 2×3 Subarray",

abstract = "A high efficiency X-band monopulse slot array antenna based on a 2×3 elements subarray is designed and analyzed in this letter. The bottom layer of the antenna structure is a waveguide feed network for power distribution. The waveguide feed network transfers energy to the cavity array through coupling slots. Then, each cavity excites a 2×3 radiation slots array at the top layer. The subarray unit is used to form a larger array, providing flexibility in the size of the array antenna. Based on the 2×3 subarray, a 4×6 array antenna is designed and fabricated. At the center frequency in the X-band (8 GHz-10.4 GHz), the antenna achieves a gain of 21.5 dBi, a bandwidth of 26.1%, and a reflection coefficient below -10 dB. The measured efficiency of the array antenna exceeds 80% within the frequency band.",

keywords = "High efficiency, planar array, slot antenna, waveguide feed network, wideband",

author = "Xujing Yu and Shigang Zhou and Rong Xu and Jianying Li",

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

year = "2025",

doi = "10.1109/LAWP.2025.3561584",

language = "英语",

journal = "IEEE Antennas and Wireless Propagation Letters",

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T1 - A High Efficiency Slot Array Antenna Based on 2×3 Subarray

AU - Yu, Xujing

AU - Zhou, Shigang

AU - Xu, Rong

AU - Li, Jianying

PY - 2025

Y1 - 2025

N2 - A high efficiency X-band monopulse slot array antenna based on a 2×3 elements subarray is designed and analyzed in this letter. The bottom layer of the antenna structure is a waveguide feed network for power distribution. The waveguide feed network transfers energy to the cavity array through coupling slots. Then, each cavity excites a 2×3 radiation slots array at the top layer. The subarray unit is used to form a larger array, providing flexibility in the size of the array antenna. Based on the 2×3 subarray, a 4×6 array antenna is designed and fabricated. At the center frequency in the X-band (8 GHz-10.4 GHz), the antenna achieves a gain of 21.5 dBi, a bandwidth of 26.1%, and a reflection coefficient below -10 dB. The measured efficiency of the array antenna exceeds 80% within the frequency band.

AB - A high efficiency X-band monopulse slot array antenna based on a 2×3 elements subarray is designed and analyzed in this letter. The bottom layer of the antenna structure is a waveguide feed network for power distribution. The waveguide feed network transfers energy to the cavity array through coupling slots. Then, each cavity excites a 2×3 radiation slots array at the top layer. The subarray unit is used to form a larger array, providing flexibility in the size of the array antenna. Based on the 2×3 subarray, a 4×6 array antenna is designed and fabricated. At the center frequency in the X-band (8 GHz-10.4 GHz), the antenna achieves a gain of 21.5 dBi, a bandwidth of 26.1%, and a reflection coefficient below -10 dB. The measured efficiency of the array antenna exceeds 80% within the frequency band.

KW - High efficiency

KW - planar array

KW - slot antenna

KW - waveguide feed network

KW - wideband

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DO - 10.1109/LAWP.2025.3561584

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JO - IEEE Antennas and Wireless Propagation Letters

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A High Efficiency Slot Array Antenna Based on 2×3 Subarray

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