Design of a Directional Coupler Based on SIW Technology for X Band Applications

Boulesbaa, Mohammed; Djerafi, Tarek; Bouchekhlal, Ahmed; Mekimah, Boualem

doi:10.1109/ccssp49278.2020.9151478

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…We will introduce 𝑄 𝑜𝑝 = −𝑄 to transform the problem towards the minimization of 𝑄 𝑜𝑝 . As a result, 𝑄 𝑜𝑝 will be considered as an objective function for our optimization problem: Subject to: is the guiding wavelength as in [22].…”

Section: Optimization Of Siw Using Genetic Algorithm 311 Design Varia...mentioning

confidence: 99%

Unloaded quality factor optimization of substrate integrated waveguide resonator using genetic algorithm

Akkader¹,

Bouyghf²,

Baghdad³

2023

IJECE

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<p>The main objective purpose of this paper is to study the enhancement techniques of the unloaded quality factor of substrate integrated waveguide (SIW) resonator, given that the quality of filters depends first on the quality of the resonators that compose it. Performance enhancement is achieved by employing a MATLAB-based genetic algorithm to optimize the geometrical parameters of the SIW resonator by iterative convergence to the target frequency (10 GHz frequency). On the other hand, the Ansys HFSS tool is used to model and optimize the SIW resonator with the suitable transition and plot the S-parameters for a frequency sweep range to validate its property. The results obtained allow increasing the unloaded Q-factor to be more than 1609 and reducing not only insertion and return losses but also reducing the size of the resonator. The proposed SIW resonator with its small size and low loss is directly useful for microwave and millimeter-wave applications.</p>

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Section: Optimization Of Siw Using Genetic Algorithm 311 Design Varia...mentioning

confidence: 99%

Unloaded quality factor optimization of substrate integrated waveguide resonator using genetic algorithm

Akkader¹,

Bouyghf²,

Baghdad³

2023

IJECE

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“…The main three SIW design parameters are; SIW width w, metallic via diameter d and the pitch s. In order to avoid any leakage from the structure, these parameters must be calculated using below formulas [7,25]:…”

Section: Fig 1 Siw Configurationmentioning

confidence: 99%

“…In general, traditional rectangular waveguide couplers have better features than planar couplers regarding to their low insertion losses, high quality factors and power handling. On the other hand, RCW's are difficult to manufacture and they are not easy to integrate into planar microwave systems [7].…”

Section: Introductionmentioning

confidence: 99%

“…For broadband high frequency applications, dimensions of the rectangular waveguide become too small and difficult to implement even with advanced fabrication techniques, therefore,Substrate Integra-ted Waveguide (SIW) technology has been introduced as a suitable way to implement structures such as in [2,8,7,9,14,10,11,12]. SIW structures have common advantages with printed circuits such as low cost, small size and planar integration.…”

Section: Introductionmentioning

confidence: 99%

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Rigorous Analysis of a 26-GHz hybrid SIW coupler with Mode Matching Technique

Matar

Çınar

2022

JERR

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In this paper, rigorous Mode-Matching Technique (MMT) with Generalized Scattering Matrix Method (GSMM) is used to analyze novel hybrid SIW coupler operating at 26 GHz for 5G applications. The introduced coupler has an equal-amplitude of about -3 dB besides 90-degree at its forward and coupled output ports with more than 4 GHz bandwidth. In addition to rigorous analysis, full-wave CST simulator is used to optimize coupler structure and the results from MMT and CST are compared and discussed. The coupler structure divided into two symmetrical cascaded parts with each part having multi-port bifurcated sections. Due to symmetrical structure, analyzing one half of the coupler with MMT has been sufficient for full analysis.

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“…Based on the patterned ground that is achieved by destroying an integral ground with some patterns, studies show it can also be utilized to design a directional coupler with enhanced performance. 20,21 On the other hand, by folding the coupled line in the coupling region, results indicate the tight-coupled coupler with high directivity can be developed, as studied by Zheng et al 22,23 For a directional coupler with enhanced performance, other techniques include the use of fragment coupling, 24,25 the substrate integrated waveguide (SIW), 26 and by combining the branch line with coupled line. 27,28 With the increasing demand for microwave components with stringent requirements, there is the need for the continuous improvement in the design and performance of the basic components.…”

Section: Introductionmentioning

confidence: 99%

Wideband directional coupler based on zigzag coupling and wedge structure for isolation enhancement

Wang

Yin

et al. 2022

Int J RF Mic Comp-Aid Eng

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This paper presents the design of wideband directional coupler with enhanced isolation performance. Studies show that introducing the zigzag coupling releases the phase-velocity difference between the even-and odd-mode in the coupling region, thus improving the directivity. To further improve the performance, wedge structure is proposed, and therefore, a wideband coupled-line directional coupler is developed with enhanced isolation responses. The presented coupler characterizes simple architecture, planar layout, symmetric topology, symmetric coupling and isolation responses that are the basic differ-

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Design of a Directional Coupler Based on SIW Technology for X Band Applications

Cited by 5 publications

References 10 publications

Unloaded quality factor optimization of substrate integrated waveguide resonator using genetic algorithm

Unloaded quality factor optimization of substrate integrated waveguide resonator using genetic algorithm

Rigorous Analysis of a 26-GHz hybrid SIW coupler with Mode Matching Technique

Wideband directional coupler based on zigzag coupling and wedge structure for isolation enhancement

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