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A Compact Ultra-wideband MIMO Antenna Design using Stepped Microstrip Feeder

Published: 07 March 2024 Publication History

Abstract

Aiming at the current ultra-wideband multiple-input multiple-output (UWB-MIMO) antenna, which had a large size, low isolation, and other deficiencies, a miniaturized, high-isolation UWB-MIMO antenna was designed. The antenna's backside was a rectangular ground plate with cutting corners, while the front side was made up of a "vase"-style radiation patch and a stepped microstrip feeder. The antenna was broad-banded by symmetrically cutting the corners of the rectangular radiating patch and etching the rectangular slot on the ground plate. The antenna achieved high isolation by loading a "fishbone" and symmetrical "Y" decoupling stubs on the front and back of the dielectric substrate. The antenna was simulated and measured with a size of only 22 mm × 29 mm × 0.8 mm, having an operating bandwidth of 1.5∼18 GHz (the relative bandwidth reaches 169%), isolation more significant than 17 dB in the bandwidth range, and an envelope correlation coefficient (ECC) of less than 0.02. The antenna can be utilized in UWB-MIMO wireless communication systems since it has good radiation performance and a small structure.

References

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ICNCC '23: Proceedings of the 2023 12th International Conference on Networks, Communication and Computing
December 2023
310 pages
ISBN:9798400709265
DOI:10.1145/3638837
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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Published: 07 March 2024

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Author Tags

  1. Decoupling stubs
  2. Gradient structure
  3. High isolation
  4. Multiple-input multiple-output
  5. Stepped Microstrip feeder

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