International Journal of RF and Microwave Computer-Aided Engineering

RESEARCH ARTICLE

Characteristic mode analysis of harmonic suppressed stepped impedance strip dipole antenna

Corresponding Author

Manoj Mani

[email protected]

orcid.org/0000-0002-1520-5944

Department of Electronics, Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Kochi, Kerala, India

Correspondence

Manoj Mani, Department of Electronics, Cochin University of Science and Technology, Kochi, Kerala, India.

Email: [email protected]

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Remsha Moolat,

Remsha Moolat

orcid.org/0000-0001-8610-8669

Department of Electronics, Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Kochi, Kerala, India

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Mohanan Pezholil,

Mohanan Pezholil

Department of Electronics, Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Kochi, Kerala, India

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Manoj Mani,

Corresponding Author

Manoj Mani

[email protected]

orcid.org/0000-0002-1520-5944

Department of Electronics, Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Kochi, Kerala, India

Correspondence

Manoj Mani, Department of Electronics, Cochin University of Science and Technology, Kochi, Kerala, India.

Email: [email protected]

Search for more papers by this author

Remsha Moolat,

Remsha Moolat

orcid.org/0000-0001-8610-8669

Department of Electronics, Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Kochi, Kerala, India

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Mohanan Pezholil,

Mohanan Pezholil

Department of Electronics, Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Kochi, Kerala, India

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First published: 02 February 2021

https://doi.org/10.1002/mmce.22561

Citations: 3

Funding information: University Grants Commission, Grant/Award Number: F.15-6(DEC.2014)/2015 (NET)

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Abstract

This paper presents the characteristic mode analysis of the harmonic suppressed stepped impedance strip dipole antenna. The proposed antenna is resonating at 2.4 GHz with the excellent suppression of higher harmonics. Characteristic mode analysis is effectively utilized to identify the radiating modes of the antenna. The prototype has been designed and fabricated on a single-sided FR4 substrate of dielectric constant 4.4 and loss tangent 0.025. The antenna has an overall dimension of 0.36 λ₀ × 0.096 λ₀ × 0.0128 λ₀, and the prototype is experimentally studied and validated with simulations. The impedance bandwidth of the antenna is from 2.18 to 2.77 GHz (24.58%), which covers WiMAX (2.5-2.7 GHz), WLAN (2.4-2.48 GHz), Bluetooth (2.4-2.48 GHz), and LTE (2.18-2.69 GHz). The measured peak gain and peak efficiency of the antenna are 1.75 dBi and 95%, respectively.

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