A Transparent Ultra-wideband Antenna Fed by CPW Based on Characteristic Mode Theory

Authors

  • Wanying Ren School of Electrical and Information Engineering Anhui University of Science and Technology, Huainan 232001, China
  • Zhonggen Wang School of Electrical and Information Engineering Anhui University of Science and Technology, Huainan 232001, China
  • Wenyan Nie School of Mechanical and Electrical Engineering Huainan Normal University, Huainan 232001, China https://orcid.org/0000-0002-7407-5537
  • Weidong Mu School of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China https://orcid.org/0000-0002-8828-6087
  • Chenlu Li School of Electrical and Information Engineering Hefei Normal University, Hefei 230061, China https://orcid.org/0009-0001-8049-9715
  • Mingqing Wang School of Electrical and Information Engineering Anhui University of Science and Technology, Huainan 232001, China https://orcid.org/0009-0005-0497-9185

DOI:

https://doi.org/10.13052/2024.ACES.J.391107

Keywords:

Characteristic mode, coplanar waveguide, multiple-input multiple-output, transparent antenna, ultra-wideband

Abstract

This paper proposes a high isolation transparent ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna based on characteristic mode theory. The antenna consists of four coplanar waveguide (CPW)-fed UWB monopoles, each of which is hollowed out into a mesh structure guided by feature mode theory with metal and substrates, with an excitation added at the feed point to successfully excite modes 1, 3, 5, and 7. These excited modes cover a frequency range of 1.7-13 GHz. An orthogonal layout is adopted to make the antenna structure more compact. Ultimately, a transparency of 76.3% and a radiation efficiency of over 85% are achieved, with an effective frequency band coverage of 1.32-12.15 GHz. A fan-shaped metal mesh (MM) decoupling structure is printed on the mesh structure of the antenna substrate, achieving isolation greater than 20 dB between any two components without reducing the antenna’s transparency. Across the entire operating frequency band, the gain of the antenna varies from 1.3 to 5.5 dBi within the effective bandwidth, and the envelope correlation coefficient (ECC) is less than 0.001. Additionally, the antenna exhibits good radiation characteristics. It can be easily manufactured at a low cost using traditional printed circuit board (PCB) and laser cutting techniques.

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Author Biographies

Wanying Ren, School of Electrical and Information Engineering Anhui University of Science and Technology, Huainan 232001, China

Wanying Ren received the B.E. degree from Anhui University of Science and Technology in 2022. She is currently pursuing an M.S. degree at Anhui University of Science and Technology. Her current research interest includes the theory and design of MIMO antenna.

Zhonggen Wang, School of Electrical and Information Engineering Anhui University of Science and Technology, Huainan 232001, China

Zhonggen Wang received the Ph.D. degree in electromagnetic field and microwave technique from the Anhui University of China (AHU), Hefei, P. R. China, in 2014. Since 2014, he has been with the School of Electrical and Information Engineering, Anhui University of Science and Technology. His research interests include computational electromagnetics, array antennas, and reflect arrays.

Wenyan Nie, School of Mechanical and Electrical Engineering Huainan Normal University, Huainan 232001, China

Wenyan Nie is a professor at Huainan Normal University. She received the B.S. and M.S degrees from Anhui University of Science and Technology in 2007 and 2012, respectively. Her research interests include computational electromagnetic methods, antenna theory and design.

Weidong Mu, School of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

Weidong Mu received the M.S. degree from Anhui University of Science and Technology in 2023, and he is currently pursuing the Ph.D. degree in Nanjing University of Aeronautics and Astronautics (NUAA). His research interests include RCS reduction of antennas and MIMO-antenna decoupling.

Chenlu Li, School of Electrical and Information Engineering Hefei Normal University, Hefei 230061, China

Chenlu Li received the Ph.D. degree from Anhui University in 2017. She is currently working at Hefei Normal University. Her research interests electromagnetic scattering analysis of targets and filtering antenna design.

Mingqing Wang, School of Electrical and Information Engineering Anhui University of Science and Technology, Huainan 232001, China

Mingqing Wang received the B.E. degree from Anhui University of Science and Technology in 2021. He received an M.S. degree at Anhui University of Science and Technology in 2024. His research interests include the antenna design based on the characteristic mode theory.

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Published

2024-11-30

How to Cite

[1]
W. . Ren, Z. . Wang, W. . Nie, W. . Mu, C. . Li, and M. . Wang, “A Transparent Ultra-wideband Antenna Fed by CPW Based on Characteristic Mode Theory”, ACES Journal, vol. 39, no. 11, pp. 987–998, Nov. 2024.

Issue

2024: Vol 39 Iss 11

Section

General Submission

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