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Compact Differential-Fed Planar Filtering Antennas
Umeå University, Faculty of Science and Technology, Department of Computing Science. Department of Electronics and Electrical Communications, Menoufia University, 32952 Menouf, Egypt.ORCID iD: 0000-0002-1318-7519
Umeå University, Faculty of Science and Technology, Department of Computing Science.
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2019 (English)In: Electronics, ISSN 2079-9292, Vol. 8, no 11, article id 1241Article in journal (Refereed) Published
Abstract [en]

This paper proposes novel low-profile differential-fed planar antennas with embedded sharp frequency selectively. The antennas are compact and easy to integrate with differential devices without matching baluns. The antenna design is formulated as a topology optimization problem, where requirements on impedance bandwidth, directivity, and filtering are used as the design objectives. The optimized antennas operate over the frequency band 6.0-8.5 GHz. The antennas have reflection coefficients below -15 dB, cross-polarization levels below -42 dB, a maximum gain of 6.0 +/- 0.5 dB, and a uniform directivity over more than 130 degrees beamwidth angle in the frequency band of interest. In addition, the antennas exhibit sharp roll-off between the operational band and frequencies around the 5.8 GHz WiFi band and the 10 GHz X-band. One antenna has been fabricated with a good match between simulation and measurement results.

Place, publisher, year, edition, pages
MDPI, 2019. Vol. 8, no 11, article id 1241
Keywords [en]
antennas, differential line, planar circuits, filters, directivity, topology optimization, wideband systems
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:umu:diva-167035DOI: 10.3390/electronics8111241ISI: 000502269500037OAI: oai:DiVA.org:umu-167035DiVA, id: diva2:1383940
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eSSENCE - An eScience CollaborationAvailable from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-01-09Bibliographically approved

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Hassan, EmadeldeenWadbro, EddieBerggren, Martin
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