An approach for simplifying a multiple beam-forming network for concentric ring arrays using CORPS

Arce, Augusto; Panduro, Marco A.; Covarrubias, David H.; Méndez, Aldo

doi:10.1080/09205071.2013.870685

Cited by 8 publications

(6 citation statements)

References 12 publications

(23 reference statements)

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“…Also the maximum null depth is set to −40 dB in (11). Null angles of 70° and 90° are not shown since the PSO algorithm is not able to detect these nulls near to the main beam.…”

Section: Simulation and Resultsmentioning

confidence: 99%

“…In [7][8][9], multiple beam scanning with adjustable SLL and D has been analysed using particle swarm optimisation (PSO), differential evolution (DE), and genetic algorithm (GA), respectively. The utilisation of the C-BFN to feed a concentric ring and an unequally spaced linear array has been proposed in [10,11], respectively. Also the linear array simplification based on Matrix Pencil method has been proposed in [12] where the radiation pattern has been maintained by using less complex BFN.…”

Section: Introductionmentioning

confidence: 99%

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Modified CORPS beamforming network with null‐steering capability

Saliani

Bemani

Kazemi

2019

IET Microwaves, Antennas & Propagation

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This article proposes CORPS beamforming network (BFNs) with both beam and null steering capability. All simulation results are presented for scannable mono‐beam configuration but it can be extended to the multi‐beam system. Complex inputs are optimised by means of the PSO algorithm to get the array factor with the desired characteristics that are side lobe level (SLL), directivity (D), and null depth. All sub‐blocks of the BFN are designed in the centre frequency of 2.4 GHz.

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“…Also the maximum null depth is set to −40 dB in (11). Null angles of 70° and 90° are not shown since the PSO algorithm is not able to detect these nulls near to the main beam.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modified CORPS beamforming network with null‐steering capability

Saliani

Bemani

Kazemi

2019

IET Microwaves, Antennas & Propagation

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“…This technique reduces the number of PS devices for limited scan-angle phased arrays [ 1 , 11 ]. Furthermore, the CORPS technique has been applied successfully in several previous studies for simplifying the beamforming network in different antenna array geometries [ 9 , 10 , 12 , 13 ]. Although these previous works deal with the application of CORPS for different antenna array geometries, the evaluation and proposal of new design techniques for reducing the PS devices are still scarce.…”

Section: Introductionmentioning

confidence: 99%

Coherently Radiating Periodic Structures to Reduce the Number of Phase Shifters in a 2-D Phased Array

Juárez

Panduro

Covarrubias

et al. 2021

Sensors

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This paper illustrates the application of CORPS (coherently radiating periodic structures) for feeding 2-D phased arrays with a reduced number of phase shifter (PS) devices. Three design configurations using CORPS are proposed for 2-D phased arrays. The design model of phased array for these configurations considers the cophasal excitation required for this structure to set a strategic way for feeding the antenna elements and reducing the number of PS devices. Blocks of 2 × 3 and 4 × 7 CORPS networks depending on the configuration in the 2-D phased array are set strategically in the feeding network to generate the cophasal excitation required in the antenna elements. These design configurations used for feeding the antenna elements in the planar array geometry provide several advantages with respect to others in the scanning capability and the reduction of the number of PS devices of the array system. The full-wave simulation results for the proposed configurations in 2-D phased arrays provide a reduction in the number of PSs of until 69% for a scanning range of ±25° in elevation and ±40° in azimuth. The application of the raised cosine amplitude distribution could generate radiation patterns with a SLL_PEAK ≈ −19 dB and SLL_PEAK ≈ −23 dB for the design proposed configurations in all the scanning range.

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“…The coherent beamforming network delivers a coherent Gaussian-like amplitude tapered excitation law. In addition, this versatile multiple beamforming network have been studied with diverse approaches since its introduction, such as an efficiency analysis of the structure based on the original concept, design and simplification of the coherent network in different antenna array geometries and physical implementations based on enhancements of the feeding network and its basic components [8][9][10]. Although the authors have been addressed the nonuniform linear array fed by a coherent beamforming network in [11], to the best of our knowledge the nonuniform aperture on circular arrays has not been previously analyzed in this feeding network on literature.…”

Section: Introductionmentioning

confidence: 99%

A Coherent Multiple Beamforming Network for a Non-uniform Circular Antenna Array

Arce¹,

Stevens-Navarro²,

Cardenas-Juarez³

et al. 2019

RADIOENGINEERING

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This work proposes and describes a modular and innovative beamforming network (BFN) to feed a nonequally spaced circular antenna array. The structure is based on a set of alternated power combiners and dividers that delivers a Gaussian-like amplitude distribution and coherent (in-phase) signals. A multiple beam antenna system to generate two main beams in the same aperture with a coherent network for a nonuniform array with beam shaping and beam steering properties is simulated and analyzed. Furthermore, a comparative analysis based on uniform and nonuniform circular antenna arrays fed by the proposed coherent network is conducted. The complex signals and the nonuniform circular aperture are optimized using the well known differential evolution technique. Numerical experiments show the efficiency and improvement of the coherent network with a nonuniform aperture over uniform, with an advantage in average equal to 1.8dB of directivity and-2dB of side lobe level. Moreover, the simulation results exhibit an aperture reuse and complexity reduction of the proposed coherent network configuration compared with a conventional antenna array with direct feeding, where each main beam is shaped and steered with the half of control signal inputs.

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An approach for simplifying a multiple beam-forming network for concentric ring arrays using CORPS

Cited by 8 publications

References 12 publications

Modified CORPS beamforming network with null‐steering capability

Modified CORPS beamforming network with null‐steering capability

Coherently Radiating Periodic Structures to Reduce the Number of Phase Shifters in a 2-D Phased Array

A Coherent Multiple Beamforming Network for a Non-uniform Circular Antenna Array

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