A Ka-Band TE Mode Converter

A Ka-band rectangular \mathbf{TE}_{\mathbf{10}} mode (\mathbf{TE}_{\mathbf{10}}^{\square}) to circular \mathbf{TE}_{\mathbf{01}} mode (\text{TE}_{01}^{\circ}) converter with high efficiency, high mode purity, compactness and easy fabrication is proposed. It consists of a \mathbf{TE}_{10}^{\square}-\...

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Bibliographic Details
Published in2024 9th International Conference on Computer and Communication Systems (ICCCS) pp. 1150 - 1156
Main Authors Zheng, Zichao, Pan, Ziyu, Lu, Songyu, Xu, Hengfei
Format Conference Proceeding
LanguageEnglish
Published IEEE 19.04.2024
Subjects
Bandwidth
circular
Energy conversion
Fabrication
Frequency conversion
Ka-band
mode converter
rectangular
Simulation
Splicing
TE mode
Wavelength measurement
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Summary:A Ka-band rectangular \mathbf{TE}_{\mathbf{10}} mode (\mathbf{TE}_{\mathbf{10}}^{\square}) to circular \mathbf{TE}_{\mathbf{01}} mode (\text{TE}_{01}^{\circ}) converter with high efficiency, high mode purity, compactness and easy fabrication is proposed. It consists of a \mathbf{TE}_{10}^{\square}-\mathbf{TE}_{20}^{\square} mode-converting section and a \mathbf{TE}_{20}^{\square}-\mathbf{TE}_{\mathbf{01}}^{\circ} mode-converting section. This improved sidewall-type \mathbf{TE}_{\mathbf{01}}^{\circ}-\mathbf{mode} converter with built-in pins based on the stepped waveguide technique is easier to fabricate and performs well. The optimized simulation results show that the converter achieves a mode purity greater than 98% with a conversion efficiency of nearly 96% within the frequency band of 32.28 GHz to 37.54 GHz and that it is less than 6 wavelengths (to the center frequency 34.5 GHz) in length. A back-to-back measurement of such converters and a near-field test of the output of the converter indicate a very good agreement with the corresponding simulation results.
DOI:10.1109/ICCCS61882.2024.10603361