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)
80 Downloads (Pure)


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)
Issue number1
Early online date25 Dec 2020
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 2020 Elsevier B.V., All rights reserved.


  • 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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