dorsal/arxiv
View SchemaSingle-Feed Circularly Polarized Super Realized Gain Antenna
| Authors | Georgia Psychogiou, Donal P. Lynch, Spyridon N. Daskalakis, Manos M. Tentzeris, George Goussetis, Stylianos D. Asimonis |
|---|---|
| Categories | |
| ArXiv ID | 2601.10292vv1 |
| URL | https://arxiv.org/abs/2601.10292 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
This paper presents a super realized gain, circularly polarized strip-crossed dipole antenna operating at 3.5 GHz. Superdirective behavior is achieved by leveraging strong inter-element mutual coupling through careful adjustment of the strip dimensions. The antenna features a single driven element, with the other element passively loaded with a reactive impedance. The structure is optimized to maximize left-hand circularly polarized (LHCP) realized gain, ensuring high polarization purity and good impedance matching. The optimized design exhibits a 50 $\Omega$ impedance bandwidth of 3.29 - 4.17 GHz (23.75%) and an axial-ratio bandwidth of 3.43 - 3.57 GHz (4%). At 3.5 GHz, the antenna achieves a peak realized gain of 6.1 dB ($ka \approx 1.65$), with an axial ratio of 1.4 dB. These results demonstrate that circular polarization and superdirectivity can be simultaneously realized in a geometrically simple, low-profile ($0.15\lambda$) antenna, rendering it suitable for integration into compact sub-6~GHz wireless and sensing platforms.
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"abstract": "This paper presents a super realized gain, circularly polarized strip-crossed dipole antenna operating at 3.5 GHz. Superdirective behavior is achieved by leveraging strong inter-element mutual coupling through careful adjustment of the strip dimensions. The antenna features a single driven element, with the other element passively loaded with a reactive impedance. The structure is optimized to maximize left-hand circularly polarized (LHCP) realized gain, ensuring high polarization purity and good impedance matching. The optimized design exhibits a 50 $\\Omega$ impedance bandwidth of 3.29 - 4.17 GHz (23.75%) and an axial-ratio bandwidth of 3.43 - 3.57 GHz (4%). At 3.5 GHz, the antenna achieves a peak realized gain of 6.1 dB ($ka \\approx 1.65$), with an axial ratio of 1.4 dB. These results demonstrate that circular polarization and superdirectivity can be simultaneously realized in a geometrically simple, low-profile ($0.15\\lambda$) antenna, rendering it suitable for integration into compact sub-6~GHz wireless and sensing platforms.",
"arxiv_id": "2601.10292",
"authors": [
"Georgia Psychogiou",
"Donal P. Lynch",
"Spyridon N. Daskalakis",
"Manos M. Tentzeris",
"George Goussetis",
"Stylianos D. Asimonis"
],
"categories": [
"eess.SY",
"cs.SY"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Single-Feed Circularly Polarized Super Realized Gain Antenna",
"url": "https://arxiv.org/abs/2601.10292",
"version": "v1"
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