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A Decoupling Technique for Beamforming Antenna Arrays Using Simple Guard Trace Structures

Journal of ICT Research and Applications (JICTRA) · Vol. 17 No. 3 (2023) · pp. 356–372

DOI
10.5614/itbj.ict.res.appl.2023.17.3.5
ISSN
2338-5499, 2337-5787
Published
2023-12-31
Publisher
DRI - ITB
Language
eng

Abstract

This paper discusses decoupling techniques for suppressing electromagnetic coupling between elements of beamforming antenna arrays. Guard trace structures, which are commonly used for crosstalk reduction on printed circuit board technology, are proposed to be inserted between the array elements for coupling reduction. Two types of guard trace structures, i.e., straight guard traces and serpentine guard traces, were explored, and the effect of using via holes on both types of guard traces was studied. For this purpose, two-element antenna arrays with guard trace structures inserted between array elements were designed and simulated. The simulation results showed that a straight guard trace with vias (straight GTV) and a serpentine guard trace without vias (serpentine GT) could effectively reduce EM coupling between elements of array antennas. To verify the simulation results, prototypes of antenna arrays with straight GTV and serpentine GT were realized and measured. The measurement results showed coupling reductions of 5 dB and 6.4 dB could be achieved when straight GTV and serpentine GT are inserted between two array elements separated by edge-to-edge distances of 4 mm and 9.05 mm, respectively. Therefore, the proposed decoupling technique is suitable for beamforming antenna arrays with a very close distance between array elements.

Keywords

Collaboration network of the authors

18 authors · 32 co-authorship links · 18 across different organisations

Hover or tap a name to highlight its co-authors. Double-click to open the author's page.

  • Bandung Institute of Technology
  • Telkom University
  • State University of Jakarta
  • Indonesian Institute of Sciences
  • Pakuan University
  • Universitas Sangga Buana YPKP
  • Sumatera Institute of Technology
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
Mohammad Ridwan EffendiBandung Institute of Technology3
Sugihartono SugihartonoBandung Institute of Technology1
Adit KurniawanBandung Institute of Technology1
Baso MaruddaniState University of Jakarta1
Dida Tuhu PutrantoTelkom University1
Heroe WijantoTelkom University1
Yana TaryanaIndonesian Institute of Sciences1
Mochamad YunusPakuan University1
Hardi NusantaraBandung Institute of Technology1
Hartuti MistialustinaUniversitas Sangga Buana YPKP1
Chairunnisa ChairunnisaBandung Institute of Technology1
Rheyuniarto Sahlendar AsthanSumatera Institute of Technology1
Budi SyihabuddinTelkom University1
Agus Dwi PrasetyoBandung Institute of Technology1
Deny HamdaniBandung Institute of Technology1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journals.itb.ac.id/index.php/jictra/oai, first harvested 26 Okt 2026, last seen 26 Okt 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en-US">A Decoupling Technique for Beamforming Antenna Arrays Using Simple Guard Trace Structures</dc:title>
	<dc:creator>Zulfi, Zulfi</dc:creator>
	<dc:creator>Suryana, Joko</dc:creator>
	<dc:creator>Munir, Achmad</dc:creator>
	<dc:subject xml:lang="en-US">beamforming antenna array</dc:subject>
	<dc:subject xml:lang="en-US">EM coupling</dc:subject>
	<dc:subject xml:lang="en-US">microstrip patch antenna</dc:subject>
	<dc:subject xml:lang="en-US">serpentine guard trace</dc:subject>
	<dc:subject xml:lang="en-US">straight guard trace</dc:subject>
	<dc:subject xml:lang="en-US">via hole</dc:subject>
	<dc:description xml:lang="en-US">This paper discusses decoupling techniques for suppressing electromagnetic coupling between elements of beamforming antenna arrays. Guard trace structures, which are commonly used for crosstalk reduction on printed circuit board technology, are proposed to be inserted between the array elements for coupling reduction. Two types of guard trace structures, i.e., straight guard traces and serpentine guard traces, were explored, and the effect of using via holes on both types of guard traces was studied. For this purpose, two-element antenna arrays with guard trace structures inserted between array elements were designed and simulated. The simulation results showed that a straight guard trace with vias (straight GTV) and a serpentine guard trace without vias (serpentine GT) could effectively reduce EM coupling between elements of array antennas. To verify the simulation results, prototypes of antenna arrays with straight GTV and serpentine GT were realized and measured. The measurement results showed coupling reductions of 5 dB and 6.4 dB could be achieved when straight GTV and serpentine GT are inserted between two array elements separated by edge-to-edge distances of 4 mm and 9.05 mm, respectively. Therefore, the proposed decoupling technique is suitable for beamforming antenna arrays with a very close distance between array elements.</dc:description>
	<dc:publisher xml:lang="en-US">DRI - ITB</dc:publisher>
	<dc:date>2023-12-31</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
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	<dc:type xml:lang="en-US">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journals.itb.ac.id/index.php/jictra/article/view/21321</dc:identifier>
	<dc:identifier>10.5614/itbj.ict.res.appl.2023.17.3.5</dc:identifier>
	<dc:source xml:lang="en-US">Journal of ICT Research and Applications; Vol. 17 No. 3 (2023); 356-372</dc:source>
	<dc:source>2338-5499</dc:source>
	<dc:source>2337-5787</dc:source>
	<dc:source>10.5614/itbj.ict.res.appl.2023.17.3</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journals.itb.ac.id/index.php/jictra/article/view/21321/6532</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2024 Journal of ICT Research and Applications</dc:rights>
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