Ultra-Broadband High Efficiency Mode Converter

Tribak, Abdelwahed; Zbitou, Jamal; Mediavilla, A.; Touhami, Naima Amar

doi:10.2528/pierc12111905

Cited by 24 publications

(18 citation statements)

References 4 publications

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“…Conventional serpentine, dual-bend, and shorted coaxial rectangular waveguides are used to design the TM 01 to TE 11 mode converter, but such structures are complicated in designing and fabrication. [2][3][4] Sectoral waveguide mode converter has an advantage of simplified design and easier fabrication. 5 Also, this design can support high power microwave but such mode converters are of very high weight due to the inner conductor.…”

Section: Introductionmentioning

confidence: 99%

Circular sectoral waveguide TM₀₁ to TE₁₁ mode converter

Kumar

Dwivedi

Jain

2019

Micro & Optical Tech Letters

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A high power microwave (HPM) TM01 to TE11 mode converter using circular sectoral waveguide (CSWG) is analyzed in this article. The design is simulated and validated by the measurements. The conversion efficiency is more than 90% over the frequency range 2.97‐3.02 GHz, Along with more than 99% of the input power is radiated at 3 GHz. The proposed all metal CSWG mode converter is of low weight, linear in design and HPM sustainable, having high return loss and good conversion efficiency.

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Section: Introductionmentioning

confidence: 99%

Circular sectoral waveguide TM₀₁ to TE₁₁ mode converter

Kumar

Dwivedi

Jain

2019

Micro & Optical Tech Letters

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“…For the three SWGs of region II(a), the scattering parameters in GSM1 are treated with delay lines. To enhance the processing time and avoid complexity due to the delay line, the characteristic impedance has been replaced by input impedance using the transformation of impedance . At port E, SWG π is bifurcated into two SWG π /2 using plate 1 so that GSM2 can be calculated.…”

Section: Resultsmentioning

confidence: 99%

“…To enhance the processing time and avoid complexity due to the delay line, the characteristic impedance has been replaced by input impedance using the transformation of impedance. 9 At port E, SWG π is bifurcated into two SWG π/2 using plate 1 so that GSM2 can be calculated. At port F, GSM3 has been calculated, where all the four SWG π/2 values were combined into one coaxial waveguide.…”

Section: Resultsmentioning

confidence: 99%

“…But these mode converters have a low capability to sustain at high power microwave in comparison to all metal‐mode converters. Also by using shorted inner conductor end, mode conversion of TM 01 mode to TE 11 mode is achieved but their conversion efficiency is lower in comparison to SWG mode converter . Here, mode conversion analysis for TM 01 modes to the TE 11 mode using the coaxial waveguide and SWG sections needs attention.…”

Section: Introductionmentioning

confidence: 99%

“…Also by using shorted inner conductor end, mode conversion of TM 01 mode to TE 11 mode is achieved but their conversion efficiency is lower in comparison to SWG mode converter. 8,9 Here, mode conversion analysis for TM 01 modes to the TE 11 mode using the coaxial waveguide and SWG sections needs attention. To estimate the mode conversion due to waveguide discontinuity mode-matching technique (MMT) proves to be an effective and useful method.…”

Section: Introductionmentioning

confidence: 99%

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Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Kumar

Dwivedi

Jain

2019

Micro & Optical Tech Letters

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An S‐band sectoral waveguide (SWG) mode converter was presented for simulation and electromagnetic analysis. A mode‐matching technique (MMT) for the electromagnetic analysis of an SWG mode converter has been proposed. The problem of trifurcation of the coaxial waveguide to shape SWGs and bifurcation of SWGs is discussed. In this framework, the selections of appropriate testing modes at each junction are justified. The simulation time has improved and the complexity of the proposed problem has reduced by the proposed approach. The numerical results of the MMT are compared against simulation results and are found to be in good agreement. The efficiency of both the simulated and analyzed results shows a mode conversion efficiency higher than 98.0%. An experimental evaluation shows the mode conversion of TM01 to TE11 mode using far‐field radiation patterns and has been compared with simulation results. Also, the MMT and simulation validate the mode conversion of TM01 to TE11 mode.

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Fundamental mode selection thanks to metamaterial wall insertion in waveguides

Kuhler

Raveu

Fur

et al. 2021

Engineering Reports

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In this paper, a new application of metamaterials is put forward, the selection of the fundamental mode of waveguides. To demonstrate this new application, the Modal Expansion Theory (MET) hybridized with a 2‐D Finite Element Method (FEM) is used. The procedure to design metamaterial waveguides using the MET is also introduced. This method is used to design a corrugated waveguide with a TM01 mode as fundamental mode, knowing that in metallic waveguide the fundamental mode is the TE11. As a proof of concept, this metamaterial waveguide is fabricated as well as the metallic waveguide. Both waveguides are excited with the TE11 mode, which results in a standard propagation of this mode in the metallic waveguide, and no propagation in the corrugated waveguide. To excite the TM01, a new Coaxial to Waveguide Transition is developed and presented in the paper. Both, simulations and experiments are carried out in order to verify and prove the fact that the fundamental mode of the corrugated waveguide is the TM01 mode.

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Ultra-Broadband High Efficiency Mode Converter

Cited by 24 publications

References 4 publications

Circular sectoral waveguide TM₀₁ to TE₁₁ mode converter

Circular sectoral waveguide TM₀₁ to TE₁₁ mode converter

Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Fundamental mode selection thanks to metamaterial wall insertion in waveguides

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Ultra-Broadband High Efficiency Mode Converter

Cited by 24 publications

References 4 publications

Circular sectoral waveguide TM01 to TE11 mode converter

Circular sectoral waveguide TM01 to TE11 mode converter

Mode‐matching analysis for characterization of the sectoral waveguide mode converters

Fundamental mode selection thanks to metamaterial wall insertion in waveguides

Contact Info

Product

Resources

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Circular sectoral waveguide TM₀₁ to TE₁₁ mode converter

Circular sectoral waveguide TM₀₁ to TE₁₁ mode converter