Wide Solid Angle Beam-Switching Conical Conformal Array Antenna With High Gain for 5G Applications

Xu, Hongcheng; Zhang, Binzhen; Duan, Junping; Cui, Jianli; Xu, Yi; Tian, Ying; Li, Yan; Xiong, Mengfei; Jia, Qinyin

doi:10.1109/lawp.2018.2873703

Cited by 26 publications

(19 citation statements)

References 14 publications

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“…The flexibility and high gain at low sidelobe and backlobe levels of the proposed CSC 4 can be achieved practically for UAV communication systems when inserting the antenna pattern with the array factor in Equation (25). However, fixing antenna arrays on the outer surface of the vehicle body for UAV, and especially for space vehicles, is faced by some challenges.…”

Section: Practical Challenges Discussionmentioning

confidence: 99%

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An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Albagory

2021

Sensors

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In this paper, a new conformal array structure and beamforming technique are proposed to provide efficient communication performance for unmanned aerial vehicles (UAVs) and space vehicles. The proposed array is formed by conformally stacking cylindrical, conical, and concentric circular (CSC4) arrays which are all coaxially aligned with the same axis of the conformed body and with uniform interelement spacing. The array elements are then fed by a weighting vector that has an adaptive cosine tapered profile where the maximum amplitude coefficient is oriented with the mainlobe direction to improve the scanning capabilities of the array and increase the array effective area. In addition, for very large, conformed body structures such as space vehicles, a frontal mainlobe-oriented partial CSC4 array beamforming technique is proposed to efficiently utilize the large CSC4 structure, reduce the processing requirements for mainlobe electronic steering, and to provide very low sidelobe levels with reduced backlobe levels. Simulation results show that the proposed CSC4 design can provide wide scanning angles of up to ±70° angular range in the θ-direction with only ±1° change in the beamwidth, without increasing array size and with achievable sidelobe level of –45 dB and backlobe levels less than –10 dB.

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Section: Practical Challenges Discussionmentioning

confidence: 99%

“…To compare between the properties of the 3D radiation patterns of the three array structures, we may apply uniform feeding where all the amplitude coefficients in are equal to 1 with the same phase response as the array steering vector at the desired direction according to (25) or:…”

Section: General Array Steering Vectormentioning

confidence: 99%

An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Albagory

2021

Sensors

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“…HE development of conformal antennas array [1] and the increasing interest in their applications is due to several reasons. First, aero dynamic advantages arise for aircraft (such as UAV [2,3] and SAR [4] platforms) and vessels, but they could also be exploited for the realization of train antennas, car radio antennas, and cellular base station antennas, also for the demanding 5G networks [5,6]. Wide-angle and full solid angle scanning capability are often pursued for a variety of applications, such as both ground based [7] and on board [8] surveillance radar.…”

Section: Introductionmentioning

confidence: 99%

Inverse Source on Conformal Conic Geometries

Leone

Munno

Pierri

2021

IEEE Trans. Antennas Propagat.

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The inverse source problem has a number of applications in antenna analysis and synthesis. The properties of the radiation operator, connecting the source current to the far zone field, depends on the source geometry and can be analyzed by its singular value decomposition. Here, first, we present useful upper bounds about the number of degrees of freedom for some 2D source geometries (i.e. for elliptical and parabolic arc sources) and examine the role of two different representation variables. These results were obtained from asymptotic arguments and allow to define the maximum number of independent sources and patterns that can be radiated by each geometry. They are verified to fit the numerically computed ones, too. Next, we examine the point source reconstructions by considering the point spread function. An approximate closed form evaluation reveals that the arc length representation variable leads to a space invariant behavior. The role of the source electrical length in determining the number of degrees of freedom is pointed out, too. Finally, the radiation properties of different source geometries are compared by means of a synthetic index and examples of radiation pattern synthesis and array diagnostics confirm the need to investigate the role of the source geometry.

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“…The high-power elements, such as helixes [8,9], slots [10], and horns [11], are used for research. On the other hand, the conformal array antenna [12][13][14][15][16] has become an important direction of antenna research due to its low profile, good concealment, and strong platform adaptability. The use of high-power conformal technology helps to further improve its anti-jamming capability and electronic countermeasure capability under the premise of not affecting the performance of the vehicle itself under the application environment of airborne and bomb load which is of great significance to the development of the entire high power microwave system.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are few reports of high-power conformal arrays at this stage. Common conformal [12][13][14][15][16] antenna forms such as microstrip patches and SIW antennas [17][18][19][20][21] are difficult to adapt to the requirements of high power capacity due to the existence of their dielectric structure. The existing research on high-power array antennas is mainly focused on planar arrays, which size is difficult to meet the needs of high-power conformal arrays.…”

Section: Introductionmentioning

confidence: 99%

Design of a Long Linear Helical Subarray for High-Power Cylindrical Conformal Array Antenna

Zhang¹,

Huang²,

Li³

et al. 2020

PIER M

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Ku-band long linear helical subarray (LLHS) for a high-power cylindrical conformal array antenna has been developed. The LLHS consists of 80 helical antennas can be used to constitute conformal array of cylindrical surface. Through the research on the embedded probe structure, the adjustment of the coupling ability of different types of unit probes, the sealing method of the whole feeding, the problems of large feed reflection, and the uneven coupling amount of the unit probe in the rectangular waveguide system are solved, and the LLHS which can be used in the high-power conformal array is realized. The LLHS which is 52.35λ length can obtain 25.2 dB gain, 2.31 dB axis ratio, 90% aperture efficiency, −15.65 dB reflection at 12.5 GHz, and the reflection is lower than −14 dB during 12-13 dB. In addition, it could handle a pulse power of 166 MW under vacuum condition.

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Wide Solid Angle Beam-Switching Conical Conformal Array Antenna With High Gain for 5G Applications

Cited by 26 publications

References 14 publications

An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Inverse Source on Conformal Conic Geometries

Design of a Long Linear Helical Subarray for High-Power Cylindrical Conformal Array Antenna

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