Design of a Reduced-Size Crossed-Dipole Antenna

Kedze, Kam Eucharist; Wang, Heesu; Kim, Youngwook

doi:10.1109/tap.2020.3016392

Cited by 25 publications

(11 citation statements)

References 31 publications

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“…The structures in Refs. 2 , 10 are conventional biplanar crossed-dipole antennas using two orthogonal dipoles. A conventional crossed-dipole antenna is easy to miniaturise and has high radiation efficiency, but has a low gain; moreover, the input impedance of each dipole varies greatly, so the bandwidth is very narrow.…”

Section: Measurement Resultsmentioning

confidence: 99%

Design of a broadband circularly polarised uniplanar crossed-dipole antenna

Wang,

Park,

Park

2024

Sci Rep

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This study presents the design of a uniplanar crossed-dipole antenna with broadband characteristics. The antenna comprises a pair of identical crossed-dipole arms printed on the same plane of a dielectric substrate. The crossed-dipole arms are corner-cut fat dipoles that are perpendicular to each other and connected with a bent stripline to generate circularly polarised (CP) radiations. A wide dipole arm was used to improve impedance matching and widen the axial ratio (AR) bandwidth. Additionally, the corner of each dipole arm was cut into a triangular shape to broaden the impedance and AR bandwidths further. The antenna in free space is excited via a wideband microstrip-to-parallel stripline tapered balun to reduce the effect of leakage current on the coaxial cable. Experiments and full-wave electromagnetic simulations were employed to design, verify, and validate the antenna design. The antenna, having an overall size of 45 × 45 × 0.508 mm3 (0.4 × 0.4 × 0.0045 λL3 where λL is the lowest frequency in the 3-dB AR bandwidth), demonstrates the following measured performances: an |S11|< − 10 dB impedance bandwidth of 2.53–9.14 GHz (113.3%), a 3 dB AR bandwidth of 2.65–7.75 GHz (98.1%), and peak gain of 3.7 dBic at 6.6 GHz.

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Section: Measurement Resultsmentioning

confidence: 99%

Design of a broadband circularly polarised uniplanar crossed-dipole antenna

Wang,

Park,

Park

2024

Sci Rep

Self Cite

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show abstract

“…However, the bandwidth of the radiation element itself is narrow, which limits the AR bandwidth. The structures in 2,10 are conventional biplanar crossed-dipole antennas using two orthogonal dipoles. A conventional crossed-dipole antenna is easy to miniaturise but has a low gain; moreover, the input impedance of each dipole varies greatly, so the bandwidth is very narrow.…”

Section: Comparisonmentioning

confidence: 99%

“…The tremendous interest in circularly polarised (CP) antennas as compared with linearly polarised (LP) antennas in recent times is because CP antennas possess advantages such as enhanced robustness to multipath distortion and polarisation mismatch losses. Due to these superior qualities, CP antennas are continually in demand for many wireless communication applications [1][2][3][4] . The rudimentary principle in generating CP entails producing two orthogonal electric fields with equal amplitude and a 90° phase difference [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Design of a Broadband Circularly Polarised Uniplanar Crossed-Dipole Antenna

Wang,

Park,

Park

2023

Preprint

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This study presents the design of a uniplanar crossed-dipole antenna with broadband characteristics. The antenna comprises a pair of identical crossed-dipole arms printed on the same plane of a dielectric substrate. The crossed-dipole arms are corner-cut fat dipoles that are perpendicular to each other and connected with a bent stripline to generate circularly polarised (CP) radiations. A wide dipole arm was used to improve impedance matching and widen the axial ratio (AR) bandwidth. Additionally, the corner of each dipole arm was cut into a triangular shape to broaden the impedance and AR bandwidths further. The antenna in free space is excited via a wideband microstrip-to-parallel stripline tapered balun to reduce the effect of leakage current on the coaxial cable. Experiments and full-wave electromagnetic simulations were employed to design, verify, and validate the antenna design. The antenna, having an overall size of 45 × 45 × 0.508 mm3 (0.4 × 0.4 × 0.0045 λL3 where λL is the lowest frequency in the 3-dB AR bandwidth), demonstrates the following measured performances: an |S11| < −10 dB impedance bandwidth of 2.53–9.14 GHz (113.3%), a 3 dB AR bandwidth of 2.65–7.75 GHz (98.1%), and peak gain of 3.7 dBic at 6.6 GHz.

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“…Circularly polarized (CP) antennas are widely used as satellite antennas because they are less affected by the installation direction of the transmitting and receiving antennas, the multipath effect, and the Faraday effect in the ionosphere [21]- [26]. Many kinds of research have investigated the design of CP antennas [27]- [39].…”

Section: Introductionmentioning

confidence: 99%

Low-Profile Wideband Solar-Cell-Integrated Circularly Polarized CubeSat Antenna for the Internet of Space Things

Wang

Park

2022

IEEE Access

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This paper proposes a low-profile wideband circularly polarized (CP) antenna using solar cell patches as radiation elements and a sequentially rotated feeding network for CubeSat applications. To realize a wide axial ratio (AR) bandwidth with a compact size, a sequentially rotated feeding network was designed by modifying a quadrature hybrid coupler and a rat-race coupler that has a small change in phase difference even when the frequency changes. A wideband CP patch array antenna was designed by combining a Cshaped slot-coupled solar cell patch in conjunction with a novel feeding network. The overall size of the proposed CP CubeSat antenna is 100 × 100 × 7.2 mm 3 (0.83 λo × 0.83 λo × 0.06 λo at 2.5 GHz). Solar cells occupy 79% of the antenna area, enabling efficient energy harvesting. The -10 dB impedance bandwidth is 1.98-3.0 GHz, which is a fractional bandwidth of approximately 41.0%. The 3-dB AR and 3-dB gain bandwidths are 1.98-3.0 GHz (41.0%) and 1.82-2.98 GHz (46.6%), respectively. The proposed CP solar patch array antenna demonstrates a constant radiation pattern within the -10 dB impedance bandwidth. The proposed CubeSat antenna is suitable for use in an Internet of Space Things (IoST) autonomous communication system.INDEX TERMS circularly polarized antenna, CubeSat antenna, hybrid coupler, Internet of Space Things, S-band antenna, sequentially rotated antenna, solar cell integrated antenna.

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Design of a Reduced-Size Crossed-Dipole Antenna

Cited by 25 publications

References 31 publications

Design of a broadband circularly polarised uniplanar crossed-dipole antenna

Design of a broadband circularly polarised uniplanar crossed-dipole antenna

Design of a Broadband Circularly Polarised Uniplanar Crossed-Dipole Antenna

Low-Profile Wideband Solar-Cell-Integrated Circularly Polarized CubeSat Antenna for the Internet of Space Things

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