Design and implementation of a six-port junction based on substrate integrated waveguide

Jafari, Masoud; Moradi, Gholamreza; Shirazi, Reza Sarraf; Mirzavand, Rashid

doi:10.3906/elk-1605-86

Cited by 13 publications

(3 citation statements)

References 7 publications

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“…The six-port junction presented in this paper is constructed by two power dividers, two hybrid couplers and ±45° phase shifters. As demonstrated in [14], this topology is compact in size and does not require any external connecting terminals like the traditional six-ports presented in [12][13].…”

Section: Methodsmentioning

confidence: 99%

“…Next, a single layer SIW six-port device was presented in [11] but the demonstration is limited to the simulation. In [12][13], the proposed single layer SIW six-port structures were verified experimentally, however, the configuration of the SIW six-port device has more than six ports; seven-or eight ports, in which the unused ports should be terminated by appropriate loads.…”

Section: Introductionmentioning

confidence: 99%

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A Ku-Band SIW six-port

Siang

Ibrahim

Karim

et al. 2020

IJEECS

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<p>This paper shows a compact fully integrated six-port Substrate Integrated Waveguide (SIW) operating at Ku-Band frequency range. The SIW six-port is formed by combining two SIW power dividers and two SIW couplers, having the benefit of no additional termination is required as this topology has no excessive port. To achieve the optimized design of the six-port, both of the key components; power divider and coupler are primarily designed, fabricated, and measured individually. Y-junction topology is employed on the power divider structure to achieve a compact size. In turn, the coupling coefficient of the two output ports of the SIW coupler are improved by shifting the position of a row of several vias located at the side wall center closer to the side wall. The simulated six port performance provides an advantage of wide bandwidth within Ku-Band across 13 to 17 GHz with a return loss better than 12 dB and transmission coefficient of 7±1.5 dB. The simulated and measured results show good agreement thus validating the prototype. The SIW six-port can find its application in designing a six-port.</p>

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Ku-Band SIW six-port

Siang

Ibrahim

Karim

et al. 2020

IJEECS

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“…The parameters of K and U are the kinetic and strain energy, respectively [84][85][86][87][88][89][90][91].…”

Section: Hamilton's Principlementioning

confidence: 99%

Critical Temperature and Frequency Characteristics of GPLs-Reinforced Composite Doubly Curved Panel

et al. 2020

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In this study, critical temperature and frequency characteristics of a doubly curved panel are reinforced by graphene nanoplatelets (GPLs) with the aid of a two-dimensional generalized differential quadrature method (2D-GDQM) are investigated. The size effects are included using nonlocal strain gradient theory (NSGT) that has two length scale parameters, and the panel is modeled as a panel using high order shear deformation theory (HSDT). The mechanical properties of GPLs are calculated based on the rule of mixtures and the modified Halpin–Tsai model. The novelty of the current study is in considering the effects of the thermal environment, various boundary conditions, and size effects on the frequency and critical temperature of the GPLRC panel. The validation is performed through the comparison of the numerical results for the frequency of the GPLRC panel and the literature. For more verification, a finite element model is presented using the finite element package to simulate the response of the current structure. The results created from a finite element simulation illustrate a close agreement with the numerical method results. The results demonstrate that GPLs’ weight function, the ratio of panel curvature (R1/R2), GPLs’ pattern, and size-dependent parameters have noticeable effects on the frequency and critical temperature characteristics of the GPLs-reinforced composite (GPLRC) curved panel. The favorable suggestion of this survey is that when designing the GPLRC structure, special attention should be paid to size-dependent parameters because the nonlocal and length scale parameters have an essential role in the static and dynamic behaviors of the GPLRC panel.

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