Dual-Circularly Polarized Single-Element Patch Antenna with Compact Multi-Port Feeding

A circularly polarized (CP) S-band patch antenna that makes use of a multi-port setup to improve its radiation efficiency and compactness is presented. The design highlights a single-element patch with eight-port feeding, by using compact slot meandering. To the best knowledge of the authors, no ear...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2023-11, p.1-5
Main Authors: Almalki, Mazen, Alshammari, Bandar, Podilchak, Symon K.
Format: Article
Language:English
Subjects:
Antenna feeds
Circular polarization
compactness
Couplings
Gain
multi-port
Patch antennas
Reflection coefficient
Slot antennas
Substrates
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Description
Summary:A circularly polarized (CP) S-band patch antenna that makes use of a multi-port setup to improve its radiation efficiency and compactness is presented. The design highlights a single-element patch with eight-port feeding, by using compact slot meandering. To the best knowledge of the authors, no earlier literature discloses a similar single-element patch with eight feeding points made compact by slot meandering whilst demonstrating comparable performances, BW, agility, and polarization purity. In addition, our design utilizes eight, 50-\Omega microstrip ports to set and excite the orthogonal polarization states. The miniaturized feeding arrangement, directly under the patch, enables the antenna to produce both left-handed and right-handed CP (as well as other polarization states), making the design suitable for full-duplex and diversity scenarios.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2023.3331577