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Design of metasurface-inspired high-gain and low-profile LHCP antenna

Published online by Cambridge University Press:  05 August 2025

Manoj Kumar Shrivastava ,
Ripudaman Singh ,
Diptiranjan Samantaray Open the ORCID record for Diptiranjan Samantaray [Opens in a new window] ,
Anil Kumar Gautam Open the ORCID record for Anil Kumar Gautam [Opens in a new window]  and
Amit Kumar Singh
Manoj Kumar Shrivastava
Affiliation:
Department of Electronics & Communication Engineering, GLA University, Mathura, UP, India
Ripudaman Singh
Affiliation:
Department of Electronics & Communication Engineering, IIIT Guwahati, Guwahati, Assam, India
Diptiranjan Samantaray
Affiliation:
Department of Electronics & Communication Engineering, University of Delhi, New Delhi, India
Anil Kumar Gautam*
Affiliation:
Department of Electronics & Communication Engineering, G. B. Pant Institute of Engineering and Technology, Pauri Garhwal, UP, India
Amit Kumar Singh
Affiliation:
Department of Electronics Engineering, Indian Institute of Technology-BHU, Varanasi, UP, India
*
Corresponding author: Anil Kumar Gautam; Email: gautam1575@yahoo.co.in
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Abstract

This paper presents a metamaterial-inspired, left-handed circularly polarized (LHCP), high-gain, and miniaturized antenna with a radiation efficiency of 92.8%. A properly arranged metamaterial containing a 4 × 4 array of unit cells is placed on the ground plane of the microstrip antenna to increase the antenna’s gain up to 12.8 dBi at 10.3 GHz. Both the unit cell and the antenna are designed on an FR4 substrate with a loss tangent of 0.02 and a relative permittivity of 4.4. The overall dimensions of the designed antenna are 0.88λ0 × 0.88λ0 × 0.052λ0, where λ0 is the free-space wavelength at 9.8 GHz. The simulated bandwidth of the prototype antenna is 2.8 GHz (9.9–12.7 GHz), while the measured bandwidth is 3.2 GHz (9.8–13 GHz). The maximum simulated and measured gains are 14.4 and 12.8 dBi, respectively, at frequencies of 10.4 and 10.3 GHz. Achieving such high gain in a small LHCP antenna is the novelty of our antenna design. The bandwidth of the proposed antenna lies within the upper X-band and lower Ku-band. Therefore, this antenna is suitable for applications such as weather monitoring and air traffic control systems.

Keywords

high-gain antennaLHCP antennalow-profile antennametasurface-inspired antenna

Information

Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 11
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Copyright
© The Author(s), 2025. Published by Cambridge University Press in association with The European Microwave Association.

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