A 28 GHz 8 × 8 Gapwaveguide Phased Array Employing GaN Front-End With 60 dBm EIRP

Bagheri, Alireza; Bencivenni, Carlo; Gustafsson, Magnus; Glazunov, Andrés Alayón

doi:10.1109/tap.2023.3240837

Cited by 16 publications

(18 citation statements)

References 23 publications

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“…Nevertheless, the halves of the array aperture in case of 16×8 FPA determines a larger radiations footprint, namely a worse angular scan resolution of the main beam than clustered-based 16×16 phased arrays. Moreover, this also leads to an almost double power consumption density [39], thus requiring more complicated heat dissipation mechanisms. On the contrary, the 16×8 FPA with the same area of the clustered-based 16×16 phased arrays, achieved with an interelement spacing of 0.72 0, suffers of grating lobes onset due to a PSLL = 0 dB.…”

Section: A Case 1: Maximum Steering Angle Of 0 = 60°mentioning

confidence: 99%

Analysis of Performance Enhancement of Clustered-Based Phased Arrays Employing Mixed Antenna Element Factor

Dicandia,

Genovesi

2024

IEEE Trans. Antennas Propagat.

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A novel strategy for the design and optimization of large-scan phased arrays is proposed. Active electronically beamscanning antennas offer an unparalleled set of degrees of freedom, but they can be expensive, require complex radiofrequency frontends, a suitable thermal management and generally undergo a loss in directivity due to the pattern shape of the unit radiating element. A solution to these problems can be offered by an approach that reduces the number of transmit/receive modules (TRMs) and phase shifters (PSs) by a simple and fast clustering strategy based on Penrose tessellation that operates on the regular lattice of the radiating elements. More importantly, the proposed scheme adopts a mixed-mode element factor that proves to be effective in guaranteeing a remarkable scan efficiency and robustness with respect to array elements failures. The optimization process aims to maximize the minimum gain along the main beam during the scan as well as minimizing the peak sidelobe level (PSLL), while reducing the number of TRMs.

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Section: A Case 1: Maximum Steering Angle Of 0 = 60°mentioning

confidence: 99%

Analysis of Performance Enhancement of Clustered-Based Phased Arrays Employing Mixed Antenna Element Factor

Dicandia,

Genovesi

2024

IEEE Trans. Antennas Propagat.

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“…To design an 8 × 8 configuration with 2D scanning, the suggested active PAA used an I-shaped slot structure as the radiating element. This suggested GW-PAA in [63] was later upgraded and optimized to have a better scanning performance and output EIRP by making the GW-PAA considerably compact in size and improving the microwave electronics chain to obtain an E-plane scanning of ±60 • with an EIRP of 60 dBm, as shown in [64]. Moreover, a 16 × 16 GW-PAA with slant polarized is realized with the 45 • slant slot for 5G mmWave application with 2D scanning capability is presented in [65].…”

Section: Phased Array and Multibeam Antennamentioning

confidence: 99%

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

Yong¹,

Bagheri²,

Ven³

et al. 2023

Preprint

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<p>Interest in the mmWave and sub-THz bands for next-generation communication and radar systems is increasingly growing due to the available electromagnetic spectrum. This has led to an urgent need to develop low-loss and low-fabrication-cost technologies that perform well at these frequencies. The Gap Waveguide (GW) technology is an emerging and viable contender for the development of radio frequency passive components and antenna systems. The GW technology is based on the parallel-plate waveguide principle. According to Maxwell's equations, ideally, no wave propagates within a structure if the top plate consists of a perfect electric conductor (PEC) while the bottom plate is a perfect magnetic conductor (PMC), and the distance between the plates is less than a quarter wavelength. This PMC structure creates high surface impedance characteristics which provide cutoff to all propagating modes within the airgap. In practice, these magnetic conductors can be created artificially using an Electromagnetic Band Gap (EBG) structure. Based on this simple principle, considerable research and development of novel components with high performance has seen the light in the past decade. The purpose of this paper is to present an overview of current advancements in the design and technical implementations of GW-based antenna systems and components. Practical applications and the industry interest in the developments of the GW technology for mmWave and sub-THz applications have also been scrutinized.</p>

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“…Furthermore, a strategic overhaul in the structural dynamics of the antenna array surface might be the cornerstone in harnessing its full potential. Such optimization strategies, tailored to endure high-power operational environments, would make these systems more versatile and adaptable to the ever-evolving complexities of contemporary battlefields [15][16][17]. Echoing this sentiment, it becomes clear that the ramifications of these studies aren't insular; they have the potential to invigorate technological progress across a spectrum of defence-related industries.…”

Section: Introductionmentioning

confidence: 99%

Structural Enhancement and Thermal Deformation Analysis of Antenna Arrays in Vehicle-Mounted Phased Array Radar: A Heat Dissipation Perspective

Meng,

Yang,

Zhou

et al. 2023

IJHT

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In the evolving landscape of modern warfare, an escalating importance is being attributed to vehicle-mounted phased array radars due to their imperative role in information acquisition and mastery. A significant limitation to their performance lies in the challenges of heat dissipation and resultant thermal deformation of the antenna array surface. Current methodologies for predicting thermal deformation and techniques for heat dissipation exhibit inherent shortcomings, rendering them inadequate for varying radar systems and diverse operational environments. To address this, heat transfer characteristics of microchannels on the antenna array surface of vehicle-mounted phased array radar were investigated. A novel design paradigm for the structural optimisation of the antenna array surface was subsequently proposed. In addition, a cutting-edge thermal deformation prediction method utilising a Particle Swarm Optimization (PSO)-Genetic Algorithm (GA)-Back Propagation Neural Network (BPNN) synergy was presented, aiming to overcome the deficiencies observed in existing prediction models. The insights garnered from this research offer potential pathways for the refinement of radar antenna array structures and are poised to pave the way for future advancements in this domain.

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A 28 GHz 8 × 8 Gapwaveguide Phased Array Employing GaN Front-End With 60 dBm EIRP

Cited by 16 publications

References 23 publications

Analysis of Performance Enhancement of Clustered-Based Phased Arrays Employing Mixed Antenna Element Factor

Analysis of Performance Enhancement of Clustered-Based Phased Arrays Employing Mixed Antenna Element Factor

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

Structural Enhancement and Thermal Deformation Analysis of Antenna Arrays in Vehicle-Mounted Phased Array Radar: A Heat Dissipation Perspective

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