Dual function flexible coplanar waveguide for feeding antenna of balanced structure

Lv, Xianyang; Zhang, Yong‐Wei; Shi, Quan; Fu, Yanwei; Xing, Huijuan; Temiz, Murat

doi:10.1109/isape54070.2021.9753170

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…The total length of the arch formed by the CPW and the parity strip is expected to be less than a wavelength of the highest frequency. It has been verified in [32] that the effect from the bending of the CPW board on the wave propagation through the CPW was negligible. The CPW lines made from flexible materials offers a simple feeding approach, potentially leading to the realization of a fully printed phased array, where planar array and feed are fully printed and connected through vias.…”

Section: The Feed Network For Array Elementsmentioning

confidence: 94%

“…12, where it can be seen that each element is fed through a CPW line terminated with an SMA connector. A parity strip is needed to eliminate the common mode propagation in the feeding structure, and this was investigated in greater details in [32]. If the parity strip is absent, and when the total length of the CPW is approximately half the wavelength, a resonance will occur at the corresponding frequency that is within the operational frequency band.…”

Section: The Feed Network For Array Elementsmentioning

confidence: 99%

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A Dual Slant-Polarized Cylindrical Array of Tightly Coupled Dipole Antennas

Zhang

Shi

et al. 2022

IEEE Access

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This study proposes a design of a low-profile ultra wide-band cylindrical antenna array with plus/minus 45-degree dual polarization. The proposed compact cylindrical antenna array produces an omnidirectional radiation pattern in the azimuth plane to cover all directions. It consists of 20 × 4 dualpolarized elements within a diameter of 131 mm and a height of 116 mm. The array elements are tightly coupled slant-polarized wideband dipole antennas, and hence, rotational symmetry of radiation patterns in the horizontal plane is achieved for the two orthogonal polarizations. Furthermore, a metasurface structure has been designed and placed over the interconnected array elements to achieve ultrawideband capabilities. The proposed array provides less than −10 dB reflection coefficient over a frequency band between 1.7 GHz and 5.9 GHz. The cross-polarization discrimination (XPD) is 15 dB at boresight in the azimuth plane. The electromagnetic characteristics of the cylindrical array and its corresponding planar array before bending have been evaluated and compared via simulations, and verified by measurements. The compact size, lightweight, and printable design of the proposed antenna array enable low-cost manufacturing and ease of installation. The proposed array design overcomes many challenges encountered in wide-band MIMO systems by covering the entire sub-6 GHz band while providing wide 360-degree coverage in the azimuth plane, hence, supporting multibeam applications.INDEX TERMS Cylindrical arrays, frequency selective surfaces, phased arrays, planar arrays, ultrawideband antennas.

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Section: The Feed Network For Array Elementsmentioning

confidence: 94%

Section: The Feed Network For Array Elementsmentioning

confidence: 99%

A Dual Slant-Polarized Cylindrical Array of Tightly Coupled Dipole Antennas

Zhang

Shi

et al. 2022

IEEE Access

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“…Therefore, a simpler method is desired to feed the array element of a balanced structure while providing a single-ended port for termination. A bent Coplanar Waveguide (CPW) formed on a thin substrate was used to feed the crossed disk antenna element while transforming the characteristic input impedance to 50 Ohms for verification measurements [35]. Due to the flexible substrate, CPW is used easily as feedline in conformal antenna array.…”

Section: Introductionmentioning

confidence: 99%

A Foldable Tightly Coupled Crossed Rings Antenna Array of Ultrawide Bandwidth and Dual Polarization

Zhang

Shi

et al. 2022

IEEE Access

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Low-profile foldable array antennas are becoming increasingly more important for a wide range of applications such as satellite communications and wearable electronic devices. The conventional arrays formed by patch-like antennas have been extensively studied on surfaces with a curvature but they have exhibited limited bandwidth and polarization performance. This study investigates a coupling enhanced crossed rings antenna array with two typical configurations for dual polarization, which inherently produces ultrawide bandwidth, dipole-like polarization characteristics and a fully curved array (FCA) eventually. The fractional bandwidth of the array is over 100% on a planar surface and expanded to approximately 140% on the curved surface. For the bent array of slant polarization, the beamwidth increases by over 20 • compared to the planar array and cross polarization discrimination (XPD) maintains above 15 dB. The effects of curvature on the impedance matching and polarized radiation patterns for such arrays are investigated by measuring the performance of the fabricated prototype arrays. The results revealed that the tightly coupled crossed rings antenna array on a curved surface has a potential to form multiple beams on a limited aperture size through smaller subarrays which can yield ultrawide bandwidth due to concentrated mutual coupling mechanism. This characteristic is promising in applications where traditional flat panel arrays are difficult to implement such as in mobile stations, moving platforms and for satellite communication on-the-move.

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Dual function flexible coplanar waveguide for feeding antenna of balanced structure

Cited by 2 publications

References 10 publications

A Dual Slant-Polarized Cylindrical Array of Tightly Coupled Dipole Antennas

A Dual Slant-Polarized Cylindrical Array of Tightly Coupled Dipole Antennas

A Foldable Tightly Coupled Crossed Rings Antenna Array of Ultrawide Bandwidth and Dual Polarization

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