A 3-D printed E-plane waveguide magic-T using air-filled coax-to-waveguide transitions

Cheng Guo; Jin Li; Yang Yu; Fan Zhang; Yujian Zhu; Qian Yang; Weijun Zhu; Shitao Zhu; Xiaobang Shang; Yang Gao; Yi Wang; Guan-long Huang; Qingsha S. Cheng; Anxue Zhang

doi:10.1109/TMTT.2019.2944355

A 3-D printed E-plane waveguide magic-T using air-filled coax-to-waveguide transitions

Cheng Guo, Jin Li, Yang Yu, Fan Zhang, Yujian Zhu, Qian Yang, Weijun Zhu, Shitao Zhu, Xiaobang Shang, Yang Gao, Yi Wang, Guan-long Huang, Qingsha S. Cheng, Anxue Zhang

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Abstract

This article reports on a new class of broadband and fully 3-D printed E-plane coax-to-waveguide transition and a monolithically 3-D printed waveguide magic-T based on the transition. The transition is constructed by a section of air-filled rectangular coaxial transmission line (TL) that is placed between two broadband coax-to-waveguide probe transitions. It is used to interconnect the magic-T's sum port and the waveguide T-junction. The incorporation of the transition reorients all the waveguide arms of the magic-T into the E-plane. Some X-band prototypes of the proposed transition and the magic-T are designed and implemented. Polymer-based additive manufacturing and copper electroplating techniques are employed to monolithically fabricate each prototype. The transition and the magic-T exhibit broadband and low-loss characteristics from 8.2 to 12.4 GHz with the measured performance well matched with the simulations. In addition, the power handling capability (PHC), including the peak PHC (PPHC) and the average PHC (APHC), of the magic-T is evaluated by simulations, showing that the proposed magic-T could handle 100 W of APHC.

Original language	English
Pages (from-to)	4984-4994
Number of pages	11
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	67
Issue number	12
Early online date	5 Nov 2019
DOIs	https://doi.org/10.1109/TMTT.2019.2944355
Publication status	Published - Dec 2019

Keywords

Waveguide transitions
Planar waveguides
Probes
Rectangular waveguides
Waveguide components
Broadband communication

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10.1109/TMTT.2019.2944355Licence: None: All rights reserved

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© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. C. Guo et al., "A 3-D Printed $E$ -Plane Waveguide Magic-T Using Air-Filled Coax-to-Waveguide Transitions," in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 12, pp. 4984-4994, Dec. 2019, doi: 10.1109/TMTT.2019.2944355.
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Cite this

Guo, C., Li, J., Yu, Y., Zhang, F., Zhu, Y., Yang, Q., Zhu, W., Zhu, S., Shang, X., Gao, Y., Wang, Y., Huang, G., Cheng, Q. S., & Zhang, A. (2019). A 3-D printed E-plane waveguide magic-T using air-filled coax-to-waveguide transitions. IEEE Transactions on Microwave Theory and Techniques, 67(12), 4984-4994. Advance online publication. https://doi.org/10.1109/TMTT.2019.2944355

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abstract = "This article reports on a new class of broadband and fully 3-D printed E-plane coax-to-waveguide transition and a monolithically 3-D printed waveguide magic-T based on the transition. The transition is constructed by a section of air-filled rectangular coaxial transmission line (TL) that is placed between two broadband coax-to-waveguide probe transitions. It is used to interconnect the magic-T's sum port and the waveguide T-junction. The incorporation of the transition reorients all the waveguide arms of the magic-T into the E-plane. Some X-band prototypes of the proposed transition and the magic-T are designed and implemented. Polymer-based additive manufacturing and copper electroplating techniques are employed to monolithically fabricate each prototype. The transition and the magic-T exhibit broadband and low-loss characteristics from 8.2 to 12.4 GHz with the measured performance well matched with the simulations. In addition, the power handling capability (PHC), including the peak PHC (PPHC) and the average PHC (APHC), of the magic-T is evaluated by simulations, showing that the proposed magic-T could handle 100 W of APHC.",

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author = "Cheng Guo and Jin Li and Yang Yu and Fan Zhang and Yujian Zhu and Qian Yang and Weijun Zhu and Shitao Zhu and Xiaobang Shang and Yang Gao and Yi Wang and Guan-long Huang and Cheng, {Qingsha S.} and Anxue Zhang",

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AU - Zhu, Shitao

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AB - This article reports on a new class of broadband and fully 3-D printed E-plane coax-to-waveguide transition and a monolithically 3-D printed waveguide magic-T based on the transition. The transition is constructed by a section of air-filled rectangular coaxial transmission line (TL) that is placed between two broadband coax-to-waveguide probe transitions. It is used to interconnect the magic-T's sum port and the waveguide T-junction. The incorporation of the transition reorients all the waveguide arms of the magic-T into the E-plane. Some X-band prototypes of the proposed transition and the magic-T are designed and implemented. Polymer-based additive manufacturing and copper electroplating techniques are employed to monolithically fabricate each prototype. The transition and the magic-T exhibit broadband and low-loss characteristics from 8.2 to 12.4 GHz with the measured performance well matched with the simulations. In addition, the power handling capability (PHC), including the peak PHC (PPHC) and the average PHC (APHC), of the magic-T is evaluated by simulations, showing that the proposed magic-T could handle 100 W of APHC.

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A 3-D printed E-plane waveguide magic-T using air-filled coax-to-waveguide transitions

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