Dually-Polarized Butler Matrix for Base Stations With Polarization Diversity

Dyab, Walid; Sakr, Ahmed A.; Wu, Ke

doi:10.1109/tmtt.2018.2880786

Cited by 22 publications

(9 citation statements)

References 21 publications

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“…Other techniques for achieving multibeam antennas using passive structures have also been considered. These include the circuit-based Butler matrix beamformer [82] and quasioptical architectures using multi-feed lenses [83], [84]. Although the generated beams are static with each beam pointing in a pre-defined direction, these antennas are low-cost and light-weight and are useful in certain application scenarios.…”

Section: A Mmwave Antennas For 5g Bssmentioning

confidence: 99%

The Role of Millimeter-Wave Technologies in 5G/6G Wireless Communications

et al. 2021

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Section: A Mmwave Antennas For 5g Bssmentioning

confidence: 99%

The Role of Millimeter-Wave Technologies in 5G/6G Wireless Communications

et al. 2021

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“…Most of the feeding systems for polarization control or reconfigurability can be divided into active or passive circuit solutions. An example of such a passive system was presented in [21], where a dually polarized waveguide coupler system was presented, which operated at 60 GHz. The proposed feeding system enabled an efficient power split ratio that can be useful in base station applications.…”

Section: Take Down Policymentioning

confidence: 99%

Planar Feeding Circuit Integrated With a Compact Dielectric Resonator for Polarization Diversity

Kuznetcov

Podilchak

Johnstone

et al. 2021

IEEE Trans. Microwave Theory Techn.

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“…In [19], circular polarization was achieved by using a 1 × 6 magneto-electric dipole antenna array with a 5 × 6 Butler matrix. In [20], the polarization diversity was considered together with the dual-polarization characteristic using a waveguide-type Butler matrix.…”

Section: Introductionmentioning

confidence: 99%

Dual-Circularly Polarized 60 GHz Beam-Steerable Antenna Array with 8 × 8 Butler Matrix

2020

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A beam-steerable dual-circularly polarized 60 GHz antenna array is proposed. A 1 × 4 dual-fed stacked patch antenna array is integrated with an 8 × 8 Butler matrix. By utilizing the 8 × 8 Butler matrix, the proposed antenna array generates dual-circular polarization with beam-steering capability. The proposed antenna array system demonstrates good reflection coefficients in the frequency band ranging from 55.3 GHz to 64.9 GHz and has a mutual coupling of less than −10 dB over the frequency range of 57.5 GHz–63.2 GHz. At 60 GHz, the maximum gains and beam-steering angles for input ports 2, 4, 5, and 7 are 9.39 dBi at −38°, 10.67 dBi at −11°, 10.63 dBi at +11°, and 9.38 dBi at +39°, respectively. It is also demonstrated that the dual-polarization is well formed by switching the excitation ports. The right-handed circular polarization (RHCP) is formed when four ports from port 1 to port 4 are excited and left-handed circular polarization (LHCP) is formed when four ports from port 5 to port 8 are excited. The proposed antenna array system could be a good candidate for millimeter-wave 5G applications that require wide beam coverage and polarization diversity.

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Dually-Polarized Butler Matrix for Base Stations With Polarization Diversity

Cited by 22 publications

References 21 publications

The Role of Millimeter-Wave Technologies in 5G/6G Wireless Communications

The Role of Millimeter-Wave Technologies in 5G/6G Wireless Communications

Planar Feeding Circuit Integrated With a Compact Dielectric Resonator for Polarization Diversity

Dual-Circularly Polarized 60 GHz Beam-Steerable Antenna Array with 8 × 8 Butler Matrix

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