Circular Conformal Array Antenna With Omnidirectional and Beamsteering Capabilities for 5G Communications in the 3.5-GHz Range [Wireless Corner]

The design and realization of a reconfigurable antenna array operating in the 3.4-3.8 GHz band is presented. Array synthesis methods are developed to reduce the power consumption and are experimentally validated by measurements. The array is composed of 16 dual-polarized dipoles whose excitations are provided by a baseband arbitrary waveform generator. The array is able to radiate simultaneously two or more focused beams in one plane over a scanning range of ±45°, these beams can be reconfigured at will. To achieve these radiation pattern requirements while reducing as much as possible the array power consumption, specific antenna array synthesis tools are developed. In particular, the way to synthesize two sparse arrays at two frequencies having common switched-off antennas is proposed and described. This strategy, together with the synthesis of uniform amplitude excitations, enables to harness the consumption characteristics of power amplifiers. This energyefficient synthesis means that two mobile operators can share the same antenna array. Several representative measurement results of the array prototype validate the radiation performances and experimentally demonstrate the achieved reduction of power consumption.

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“…x ",7 + x ",k ≤ P " JKL (6) where P " JKL is the 1 dB compression point (P *jZ ). The constraint ( 6) is added to the ones in (3).…”

Section: ) Use Of Amplifiers In Linear Regimementioning

confidence: 99%

“…This technology was first mainly restricted to military applications because of its high cost. Active arrays have more recently been successfully applied to automotive radars [3], [4] and they are now considered as an interesting candidate for 5G communication systems [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Antenna Array With Reduced Power Consumption—–Synthesis Methods and Experimental Validations in S-Band

Fofana

Fuchs

Avrillon

et al. 2021

IEEE Trans. Antennas Propagat.

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“…There are multiple techniques that can be employed to achieve active pattern reconfiguration. Several researchers have resorted to a plethora of interventions such as parasitic metal sections, feeding network reconfigurations, and switching between radiators [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The ability to achieve beam reconfiguration using parasitic metal strips is presented in [2,[5][6][7], where a center-driven element such as a dipole or a monopole is surrounded by metal strips that act as parasitic elements.…”

Section: Introductionmentioning

confidence: 99%

“…Reconfiguring the feeding network of an antenna system is another technique that results in pattern reconfiguration as discussed in [3,4,[8][9][10][11][12][13][14][15][16][17][18][19]. Such reconfiguration method either relies on feeding specific antenna elements at discrete times or rerouting the excitation signal into different positions across the feeding network.…”

Section: Introductionmentioning

confidence: 99%

“…This technique enables agile antenna structure integration by relying on dynamic reconfiguration mechanisms through the rerouting and intentional alteration of the antenna surface currents. Another approach presented in [17], [18] enables multiple radiating elements to be instantaneously activated through the implementation of dynamic matching sections.…”

Section: Introductionmentioning

confidence: 99%

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A Four-Element Antenna Array System With 15 Reconfigurable Radiation Patterns

et al. 2021

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This paper describes the design of a planar antenna array system with pattern reconfiguration in the azimuthal plane. The antenna array system is designed based on four antenna units where each unit is composed of two printed Yagi-Uda elements that radiate in directional beams over a dedicated sector, thus ensuring maximum isolation with neighboring units. The various units are fed on demand through a reconfigurable structure that is composed of four reconfigurable feeding networks and a one-to-four power divider. The feeding structure distributes the required power to the various radiating units through the activation of the two integrated PIN diodes along each of the four reconfigurable feeding networks. Such activation results in 15 reconfigurable radiation patterns that cover four orthogonal sectors over a fixed operating frequency, at 5.8 GHz. Each antenna unit is designed to exhibit a gain of 9 dBi with a half-power beamwidth of 44 ο and a sidelobe level of -16 dB. The antenna array is fabricated and tested, where the measured results validate the predicted simulated data.

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Electronically beam switched conformal microstrip array antenna for 5G applications

Shaw

Choukiker

2022

Int J RF Mic Comp-Aid Eng

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This article presents an electronically beam-switching conformal microstrip array antenna for 5G applications. The 1 Â 2 array microstrip antenna is used as a radiating element. They are placed on a hexagonal shape-holding structure to form the conformal geometry. The radiating elements are excited with a six-faced feeding network. It consists of one 3-way power divider and two 2-way power dividers. These power dividers (PDs) are serially connected and formed a six-faced regular structure with 12 output ports. To obtain the beam switching mechanism, the uniform PD is then loaded with RF switched PD. Six angular separation beams (Sectors I-VI) are obtained (each 60 ) with RF switches (1 SP3T and 3 SPDT). The response of the feed network is verified experimentally with a conformal array structure. The impedance bandwidth is well below À10 dB and measured for all switched sectors. The measured isolation among different output ports of the device is below À20 dB. The simple microstrip design technique makes the device suitable for beam switching in a large array configuration for 5G applications.

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Circular Conformal Array Antenna With Omnidirectional and Beamsteering Capabilities for 5G Communications in the 3.5-GHz Range [Wireless Corner]

Cited by 23 publications

References 16 publications

Reconfigurable Antenna Array With Reduced Power Consumption—–Synthesis Methods and Experimental Validations in S-Band

Reconfigurable Antenna Array With Reduced Power Consumption—–Synthesis Methods and Experimental Validations in S-Band

A Four-Element Antenna Array System With 15 Reconfigurable Radiation Patterns

Electronically beam switched conformal microstrip array antenna for 5G applications

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