Microstrip Antenna Array Fed by a Low-Loss Gap-Waveguide Feed Network

Sadri-Moshkenani, Parinaz; Rashed-Mohassel, J.; Shahabadi, Mahmoud

doi:10.1109/tap.2018.2835722

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…In [48], a wideband patch antenna fed by an RGW was employed to realize an 8 × 8 array at 60 GHz, with a array antenna efficiency better than 75% throughout the operational bandwidth. In [49], a similar design methodology [32], (b) GGW [33], (c) SIGW [34] and IMGW [35]. is utilized by substituting the RGW with GGW.…”

Section: B Fixed Beam Microstrip 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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Section: B Fixed Beam Microstrip 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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show abstract

“…The unequally spaced linear array (USLA) has important advantages such as smaller size and reduced number of elements. [1][2][3][4] In addition, USLA antennas are widely used in many practical applications such as radar, sonar, and wireless communications. [5][6][7] Many different numerical and analytical methods have been introduced for pattern synthesis of these kinds of arrays.…”

Section: Introductionmentioning

confidence: 99%

Development of an allocation method to synthesis of unequally spaced arrays with minimum number of elements and mutual coupling considerations

Boozari

Khalaj‐Amirhosseini

2022

Int J RF Mic Comp-Aid Eng

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A method is proposed to synthesize unequally spaced arrays so that it has minimum number of elements. Also, it is shown that the proposed method can reduce the total number of elements of equally spaced arrays. The advantage of the proposed method is that it is very fast and straightforward. In this method, the locations of array elements are calculated by considering the mutual coupling between two adjacent array elements, first. After determining the elements locations, two scenarios may be existed. In the first scenario, conventional least square method is proposed. In the second scenario and to increase the accuracy of the final design, recursive least square estimation algorithm is suggested. Mean square error between the desired and synthesized pattern is considered to measure the performance of the method. Several arrays are examined to check the performance of the proposed method. Since, the matrix pencil method (MPM) method has been widely used in the design of nonuniformly spaced arrays, in all examples, the results of MPM technique are considered in comparison process. The obtained results show that the proposed method has a good performance both in reducing the number of array elements and in the accuracy of the synthesized pattern, especially for arrays with beam-shaped pattern such as flat-top and cosecant radiation patterns.

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“…In recent years, integrating patch arrays with other microwave components has been extensively studied, [14][15][16][17][18][19][20] which can significantly increase efficiency. The feeding networks with low losses such as classic rectangular waveguide (RWG), 14 gap-waveguide, 15 slotted substrate integrated waveguide (SIW), 16,17 and SIW cavity filter [18][19][20] were proposed to feed patch arrays. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. 15, a new class of MPA array fed by a gap-waveguide with a higher aperture efficiency at the Kuband is presented. However, its relatively narrow operation bandwidth of 3.18% (12.36~12.76GHz, jS 11 j < -10 dB) potentially limits its range of application.…”

Section: Introductionmentioning

confidence: 99%

Broadband and efficient patch array antenna fed by substrate integrated waveguide feed network for Ku‐band satellite applications

Karami

Rezaei

Amn‐e‐Elahi

et al. 2021

Int J RF Microw Comput Aided Eng

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A new class of multi-layer microstrip patch antenna (MPA) array fed by substrate integrated waveguide (SIW) cavities is presented for Ku-band applications. An efficient compact multi-layer SIW feeding network is designed, which has lower losses than the conventional corporate feeding network based on microstrip lines or coplanar waveguides. A 4 Â 4 array consists of four stacked layers, including three based on the SIW technology as a feeding network and one layer for the radiating antenna array. Each layer can easily be fabricated from a dielectric substrate and processed using the printed circuit board (PCB) technology.Afterward, all the PCB laminates are stacked together and tied by screws. The measured antenna operates from 11.2 to 13.6 GHz achieving 19.35% bandwidth. The measured peak gain at 12.5 GHz is 17.1 dBi, equivalent to 71.47% aperture efficiency. The fabricated array exhibits several advantages: broadband, low cost, compactness, high radiation efficiency, high aperture efficiency, and lightweight, which makes it a candidate for Ku-band satellite applications.

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Microstrip Antenna Array Fed by a Low-Loss Gap-Waveguide Feed Network

Cited by 11 publications

References 12 publications

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

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

Development of an allocation method to synthesis of unequally spaced arrays with minimum number of elements and mutual coupling considerations

Broadband and efficient patch array antenna fed by substrate integrated waveguide feed network for Ku‐band satellite applications

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