Mutual coupling reduction between finite spaced planar antenna elements using modified ground structure

Muhammad Shahzad Sadiq, Cunjun Ruan*, Hamza Nawaz, M. Ali Babar Abbasi, Symeon Nikolaou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
14 Downloads (Pure)

Abstract

In this paper, a modified ground structure capable of reducing mutual coupling to provide isolation between adjacent antenna elements is presented. The proposed modified ground structure is a combination of a strategically located ground slot, asymmetric partial ground and a substrate-integrated pin wall. The use of the modified ground structure causes a more than 28 dB (measured value) mutual coupling reduction. The modified ground structure has been optimized and validated with a finite spaced planar 2 × 1 antenna array operating at 4.16 GHz, intended for unmanned aerial vehicle radar altimeter applications. The patch antennas built with the MGS exhibit high gain (greater than 6 dBi throughout the operational band), along with inter-element coupling as low as −65 dB. Mutual coupling reduction at lower contours is beneficial for altimeter applications.

Original languageEnglish
Article number19
Number of pages8
JournalElectronics (Switzerland)
Volume10
Issue number1
Early online date25 Dec 2020
DOIs
Publication statusPublished - Jan 2021

Bibliographical note

Funding Information:
This work is supported by the National Natural Science Foundation of China (Grant No. 61831001).

Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Altimeter
  • Antenna array
  • Modified ground structure
  • Mutual coupling reduction

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Hardware and Architecture
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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