A 16 × 16-Element Slot Array Fed by Double-Layered Gap Waveguide Distribution Network at 160 GHz

Ding, Xuhui; An, Jianping; Bu, Xiangyuan; Liu, Jinlin; He, Zhongxia Simon

doi:10.1109/access.2020.2981615

Cited by 12 publications

(5 citation statements)

References 37 publications

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“…Moreover, the integration of multilayer substrate-integrated gap waveguide (SIGW) horn antennas and hybrid technologies amalgamating SIW and PRGW have expanded the design horizons of mm-wave antennas. By leveraging elevated-SIGW structures and triangular slot configurations, engineers have achieved wide bandwidth coverage and enhanced gain performance, paving the way for novel applications in diverse scenarios [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44]. Illustrating the breadth of possibilities, Figure 5 showcases metallic GW antennas tailored to various mm-wave applications, addressing specific requirements and challenges.…”

Section: Mm-wave Antennas With Diverse Polarizationsmentioning

confidence: 99%

Exploring Gap Waveguide Solutions: A Review of Millimeter-Wave Beamforming Components and Antennas for Advanced Applications

Shady,

Sifat,

Ali

2024

J. Electron. Electric. Eng.

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This review delves into the crucial role of gap waveguide (GW) technology in advancing millimeter-wave (mm-wave) communication systems, specifically focusing on the exploration of beamforming components and antennas for advanced applications. With an emphasis on achieving high-data-rate and low-latency services, GW technology becomes instrumental in the development of cost-effective mm-wave solutions. The paper investigates practical applications, highlighting various components essential for beamforming antenna systems, including mm-wave antennas with diverse polarizations, power combining and dividing components like directional couplers, and beamforming feeding networks. These components collectively contribute to the comprehensive integration of a beamforming antenna system within the mm-wave frequency band. As the mobile communication landscape evolves, GW technology emerges as a key enabler for meeting the growing demands of consumers and technology in advanced applications, as detailed in this comprehensive review of GW solutions.

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Section: Mm-wave Antennas With Diverse Polarizationsmentioning

confidence: 99%

Exploring Gap Waveguide Solutions: A Review of Millimeter-Wave Beamforming Components and Antennas for Advanced Applications

Shady,

Sifat,

Ali

2024

J. Electron. Electric. Eng.

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“…Over the past several years, there has been an increasing amount of interest in developing a fixed beam array antenna based on GW technology for various applications. Several antenna configurations based on different GW technology have been successfully devised, ranging from X-band to D-band and beyond [26]- [29]. The slot antenna has been essential in the development of array antennas based on the conventional metallic waveguide because it is a straightforward implementation.…”

Section: A Fixed Beam Slot Array 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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“…14 The fabrication process of full metal antenna arrays based on the conventional milling technique is not desirable due to the high accuracy requirement, especially in the mmWave and above frequency bands. 15,16 Nevertheless, reported studies revealed that the arrays had to be split into multiple pieces during fabrication based on conventional mechanical technology. As a result, the wave leakage caused by the possible air-gaps between adjacent layers is difficult to prevent entirely for the assembled prototypes, and thus deteriorating the operating performance of the arrays.…”

Section: Introductionmentioning

confidence: 99%

“…High power handling capacity and structural robustness make these antennas good candidates for long‐distance communication systems such as base stations, radar, and satellite communications 14 . The fabrication process of full metal antenna arrays based on the conventional milling technique is not desirable due to the high accuracy requirement, especially in the mmWave and above frequency bands 15,16 . Nevertheless, reported studies revealed that the arrays had to be split into multiple pieces during fabrication based on conventional mechanical technology.…”

Section: Introductionmentioning

confidence: 99%

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Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

Asci

2023

Micro & Optical Tech Letters

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In this study, linearly polarized 2 × 2 subarray and 2 × 8 element cavity‐backed antennas are proposed for 5G millimeter‐wave (mmWave) applications. Initially, the 2 × 2 subarray is designed, manufactured, and tested. According to the measured results, the 2 × 2 subarray has a wide fractional bandwidth (FBW) of 24.7% (|S11| < −10 dB, 22.3‒28.6 GHz) which covers the main spectrum allocations for the 5G cellular network. A broadband 1 × 4 corporate feed network is designed, which is challenging and crucial, to form 2 × 8 antenna array. The experimental results show that the final 2 × 8 antenna array has a wide FBW of 23% (|S11| < −10 dB, 22.3‒28 GHz), with a boresight gain of 20.5 dBi. Throughout the operating band, a stable gain of 19.5 ± 1 dBi is achieved. The 2 × 8 antenna array has good and stable radiation characteristics; SLLs are less than −13 dB and XPol is better than −20 dB for both E‐ and H‐planes across the entire operating frequency. Stubs are added between adjacent subarrays in the E‐plane to suppress mutual coupling and to improve gain of 2 × 8 antenna, which results in broadband impedance characteristics. The size of the 2 × 8 antenna array is 6.3λο × 8.1λο × 1.3λο, where λο is the free space wavelength at 25 GHz. These results show that the proposed antenna has potential for 5G millimeter‐wave applications requiring broadband and high gain.

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A 16 × 16-Element Slot Array Fed by Double-Layered Gap Waveguide Distribution Network at 160 GHz

Cited by 12 publications

References 37 publications

Exploring Gap Waveguide Solutions: A Review of Millimeter-Wave Beamforming Components and Antennas for Advanced Applications

Exploring Gap Waveguide Solutions: A Review of Millimeter-Wave Beamforming Components and Antennas for Advanced Applications

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

Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications

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