A General Approach for Synthesizing Multibeam Antenna Arrays Employing Generalized Joined Coupler Matrix

Guo, Charles A.; Guo, Yueping

doi:10.1109/tap.2022.3153037

Cited by 22 publications

(11 citation statements)

References 20 publications

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“…and equal to 16.1 dB. In accordance with [19][20][21][22][23][24], the directivity of a flat antenna array is the product of the flat directivity for orthogonal sections of the radiation patterns, divided by the number μ.…”

Section: Results Of Numerical Studiesmentioning

confidence: 99%

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

Islamov

Hasanov

Ibrahimov

et al. 2023

Int. J. Microw. Wireless Technol.

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The article is devoted to computer modeling, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications. The paper proposes an iterative method for the amplitude-phase synthesis of an antenna array according to the requirements for the envelope of the side lobes. The proposed method allows to determine the complex amplitudes of the elements of a digital antenna array for any given weight function, based on the theorems of matrix theory. The difference of the method lies in the iterative procedure for choosing the weight function, taking into account the excess level of the side lobes of the digital antenna array. In this regard, in the course of solving the synthesis problem, a weight function was found that leads to the fulfilment of the requirements for radiation patterns and does not lead to a decrease in the directivity coefficient. The signal-to-noise ratio was used as a criterion. For the first time, an analytical expression is given for the formation of a weight function in the course of an iterative process that takes into account the requirements for the envelope of the side lobes. The operability and convergence of the proposed method was confirmed in the course of numerical studies on the example of a digital antenna array. The performed numerical analysis confirmed the effectiveness of the proposed synthesis method.

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Section: Results Of Numerical Studiesmentioning

confidence: 99%

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

Islamov

Hasanov

Ibrahimov

et al. 2023

Int. J. Microw. Wireless Technol.

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“…Ring antenna arrays with discrete-switching pattern scanning are characterized by a simpler control system, lower heat losses in the switch, respectively, higher efficiency and gain, but provide discrete scanning of pattern patterns with a certain angular step, depending on the number of array elements. However, this is not an obstacle to the use of such annular antenna arrays in many real control and communication systems [22][23][24][25].…”

Section: Formulation Of the Problemmentioning

confidence: 99%

A new approach to modeling a microwave antenna array with a phase radiation pattern

Hunbataliyev

2024

Eng. rev. (Online)

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In this paper, models of an annular antenna array have been developed and an analysis of the main characteristics of this antenna array has been carried out. The obtained results suggest that the considered variants of the microwave ring antenna array with discrete-switching scanning of the azimuthal radiation patterns, taking into account the weight, size and electrical characteristics, seem promising for use in the equipment of radio communication, radar and radio control systems. And also a method for correcting the distortions of the directional patterns of the developed annular antenna array, caused by the mutual influence of emitters, is proposed. To implement this technique, an algorithm has been developed for changing the amplitude distribution of the electromagnetic field strength from the phase distribution of the electromagnetic field strength to compensate for the distortion of parameters caused by the deviation of the beam of the radiation pattern.

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“…Second, we develop the theory to analyze the realizable range of one-section and two-section couplers. Third, although the theory presented in [29] is based on ideal couplers and phase shifters, the fabricated prototypes proved that the functionality of GJC matrices in providing excitations for linear arrays to generate multiple beams with arbitrary beam angles can be realized by non-ideal circuit elements with high accuracy. Fourth, whilst [30] reported a working GJC matrix prototype only to validate the theory, a detailed design procedure has been developed in this paper to guide the design of any type of Nolen-like GJC matrices from theoretical analysis to hardware realization.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve simultaneous and independent beam steering for multiple beams, the concept of the Generalized Joined Coupler (GJC) matrix was introduced in [29]. This approach allows for individually controllable multibeams by optimizing the coupling coefficients of all the couplers at once.…”

Section: Introductionmentioning

confidence: 99%

“…This approach allows for individually controllable multibeams by optimizing the coupling coefficients of all the couplers at once. The values of directional couplers can be determined using the theoretical framework outlined in [29] with various optimization strategies [30]. While theoretically, arbitrary beam angles and sidelobe levels can be realized, practical implementation with different circuit technologies requires significant effort.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact Multi-Beamforming Networks Based on Generalized Joined Coupler Matrix With Flexible Beam Angles and Low Sidelobe Levels

Xu,

Zhu,

Guo

2024

IEEE Open J. Antennas Propag.

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The investigation of beamforming networks (BFNs) for multibeam antenna arrays has been ongoing for decades. However, enabling individually controllable multibeams employing a BFN has remained a recognizable challenge. The utilization of generalized joined coupler (GJC) matrices has demonstrated its efficacy as a viable solution for achieving multibeams with independent individual beam directions and minimal sidelobe levels. In this paper, for the first time, the design of the GJC matrix as a multibeam feeding network is reported using planar circuits and verified experimentally. The GJC matrix design is built based on a mixture of one-section and two-section branch-line couplers, which are able to realize a wide range of coupling coefficients. A thorough investigation from theoretical analysis to electromagnetic modeling is conducted on one-section and two-section branch-line couplers, and a general design guideline is given for choosing the appropriate type and dimensions for each coupler in a GJC matrix. Then, two types of BFN using microstrip line working at 5 GHz and stripline working at 12 GHz are designed, fabricated and measured, respectively. Different beam angles are realized to demonstrate the independent and simultaneous multibeam steering functionality, the experimental results agree well with the theoretical ones.

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A General Approach for Synthesizing Multibeam Antenna Arrays Employing Generalized Joined Coupler Matrix

Cited by 22 publications

References 20 publications

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

Computer simulation, visualization, and synthesis of a digital antenna array used for transmitting and receiving signals in industrial applications

A new approach to modeling a microwave antenna array with a phase radiation pattern

Compact Multi-Beamforming Networks Based on Generalized Joined Coupler Matrix With Flexible Beam Angles and Low Sidelobe Levels

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