Design of a Compact CPW-Fed Monopole Antenna With Asymmetrical Hexagonal Slot Loaded Ground Structure for C/X/Ku Band Applications

Ajay Kumar Dwivedi; Brijesh Mishra; Vivek Singh; Pramod Narayan Tripathi; Ashutosh Kumar Singh

doi:10.2478/ecce-2020-0003

Design of a Compact CPW-Fed Monopole Antenna With Asymmetrical Hexagonal Slot Loaded Ground Structure for C/X/Ku Band Applications

Authors

Ajay Kumar Dwivedi Department of Electronics and Communication, Indian Institute of Information Technology Allahabad https://orcid.org/0000-0003-1146-0902
Brijesh Mishra Department of Electronics and Communication https://orcid.org/0000-0002-2535-7159
Vivek Singh Department of Electronics and Communication, Shambhunath Institute of Engineering and Technology https://orcid.org/0000-0001-7569-0104
Pramod Narayan Tripathi Department of Radio Engineering and Cybernetics, Moscow Institute of Physics and Technology https://orcid.org/0000-0002-7303-5234
Ashutosh Kumar Singh Department of Electronics and Communication, Indian Institute of Information Technology Allahabad https://orcid.org/0000-0001-6342-8918

DOI:

https://doi.org/10.2478/ecce-2020-0003

Keywords:

Anechoic chambers, Antenna measurements, Antenna radiation patterns, Gain, Group delay, Ultra-Wideband antennas

Abstract

A novel design of ultra-wideband CPW-fed compact monopole patch antenna is presented in the article. The size of the antenna is 22 × 18 × 1.6 mm and it operates well over an ultra-wideband frequency range 4.86–13.66 GHz (simulated) and 4.93–13.54 GHz (measured) covering C, X and partial Ku band applications. The proposed design consists of a defected ground plane and U-shape radiating patch along with two square shape parasitic patches in order to achieve the ultra-wideband (UWB) operations. The performance matrix is validated through measured results that indicate the wide impedance bandwidth (93.2 %) with maximum gain of 4 dBi with nearly 95 % of maximum radiation efficiency; moreover, the 3D gain pattern manifests approximately omni-directional pattern of the proposed design. The prototype has been modelled using HFSS (High Frequency Structure Simulator-18) by ANSYS, fabricated and tested using vector network analyser E5071C.

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