Miniaturized High-Efficiency Wideband Multi-Slot Antenna for Radar, Military, and 5G Applications for SDG-9

Swati V. Yadav; Manish V. Yadav; Himanshu Gupta; Vikas Gupta

doi:10.2528/PIERC25092301

Miniaturized High-Efficiency Wideband Multi-Slot Antenna for Radar, Military, and 5G Applications for SDG-9

Swati V. Yadav^*
, Manish V. Yadav
, Himanshu Gupta
, Vikas Gupta

^*Corresponding author for this work

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

Abstract

A compact wideband antenna with a multi-slot configuration is proposed for radar, military, and modern wireless communication systems. The antenna is fabricated on an FR-4 substrate with overall dimensions of 14 × 16 × 1.5 mm³, corresponding to a miniaturized electrical size of 0.163λ × 0.187λ × 0.017λ₀ at 3.5 GHz. To achieve broad impedance bandwidth and improved matching, multiple slots are etched on both the patch and ground surfaces. Experimental validation shows that the antenna effectively covers the 3.5–14 GHz frequency range, offering nearly 120% fractional bandwidth. Within this spectrum, it delivers a peak gain of 5.1 dB and a maximum radiation efficiency of about 89%, ensuring stable and low-loss performance. The compact structure maintains consistent radiation characteristics, making it suitable for portable and defense-oriented devices. Its ability to support Sub-6 GHz and 5G bands further enhances its applicability in next-generation communication platforms.

Original language	English
Pages (from-to)	128-138
Number of pages	11
Journal	Progress In Electromagnetics Research C
Volume	163
DOIs	https://doi.org/10.2528/PIERC25092301
Publication status	Published - 2026

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

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10.2528/PIERC25092301

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title = "Miniaturized High-Efficiency Wideband Multi-Slot Antenna for Radar, Military, and 5G Applications for SDG-9",

abstract = "A compact wideband antenna with a multi-slot configuration is proposed for radar, military, and modern wireless communication systems. The antenna is fabricated on an FR-4 substrate with overall dimensions of 14 × 16 × 1.5 mm3, corresponding to a miniaturized electrical size of 0.163λ × 0.187λ × 0.017λ0 at 3.5 GHz. To achieve broad impedance bandwidth and improved matching, multiple slots are etched on both the patch and ground surfaces. Experimental validation shows that the antenna effectively covers the 3.5–14 GHz frequency range, offering nearly 120\% fractional bandwidth. Within this spectrum, it delivers a peak gain of 5.1 dB and a maximum radiation efficiency of about 89\%, ensuring stable and low-loss performance. The compact structure maintains consistent radiation characteristics, making it suitable for portable and defense-oriented devices. Its ability to support Sub-6 GHz and 5G bands further enhances its applicability in next-generation communication platforms.",

author = "Yadav, \{Swati V.\} and Yadav, \{Manish V.\} and Himanshu Gupta and Vikas Gupta",

year = "2026",

doi = "10.2528/PIERC25092301",

language = "English",

volume = "163",

pages = "128--138",

journal = "Progress In Electromagnetics Research C",

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publisher = "Electromagnetics Academy",

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T1 - Miniaturized High-Efficiency Wideband Multi-Slot Antenna for Radar, Military, and 5G Applications for SDG-9

AU - Yadav, Swati V.

AU - Yadav, Manish V.

AU - Gupta, Himanshu

AU - Gupta, Vikas

PY - 2026

Y1 - 2026

N2 - A compact wideband antenna with a multi-slot configuration is proposed for radar, military, and modern wireless communication systems. The antenna is fabricated on an FR-4 substrate with overall dimensions of 14 × 16 × 1.5 mm3, corresponding to a miniaturized electrical size of 0.163λ × 0.187λ × 0.017λ0 at 3.5 GHz. To achieve broad impedance bandwidth and improved matching, multiple slots are etched on both the patch and ground surfaces. Experimental validation shows that the antenna effectively covers the 3.5–14 GHz frequency range, offering nearly 120% fractional bandwidth. Within this spectrum, it delivers a peak gain of 5.1 dB and a maximum radiation efficiency of about 89%, ensuring stable and low-loss performance. The compact structure maintains consistent radiation characteristics, making it suitable for portable and defense-oriented devices. Its ability to support Sub-6 GHz and 5G bands further enhances its applicability in next-generation communication platforms.

AB - A compact wideband antenna with a multi-slot configuration is proposed for radar, military, and modern wireless communication systems. The antenna is fabricated on an FR-4 substrate with overall dimensions of 14 × 16 × 1.5 mm3, corresponding to a miniaturized electrical size of 0.163λ × 0.187λ × 0.017λ0 at 3.5 GHz. To achieve broad impedance bandwidth and improved matching, multiple slots are etched on both the patch and ground surfaces. Experimental validation shows that the antenna effectively covers the 3.5–14 GHz frequency range, offering nearly 120% fractional bandwidth. Within this spectrum, it delivers a peak gain of 5.1 dB and a maximum radiation efficiency of about 89%, ensuring stable and low-loss performance. The compact structure maintains consistent radiation characteristics, making it suitable for portable and defense-oriented devices. Its ability to support Sub-6 GHz and 5G bands further enhances its applicability in next-generation communication platforms.

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JO - Progress In Electromagnetics Research C

JF - Progress In Electromagnetics Research C

ER -

Miniaturized High-Efficiency Wideband Multi-Slot Antenna for Radar, Military, and 5G Applications for SDG-9

Abstract

All Science Journal Classification (ASJC) codes

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