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90–96 GHz 67 W Radial Power Combining Amplifier Based on Vortex Mode

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Abstract

In this paper, a new radial power combining method based on the vortex mode is proposed. The amplitude and phase distributions of the vortex mode in the circular waveguide and coaxial are analyzed. Besides, the excitation conditions of the vortex mode in the radial power combining/dividing network are analyzed by using the vector voltage transfer matrix. According to the theoretical analysis, a W-band 16-way radial power combiner/divider with equal amplitude and equal phase difference based on the circular waveguide vortex TE11 mode is designed and implemented. Compared to the conventional radial power combining methods, this design has great advantages in high-frequency expansion and interference mode suppression and can be applied to high-power systems. Moreover, by using 32 W-band GaN MMIC modules, a radial power combining amplifier is developed to achieve the active verification of the proposed power combiner/divider. The amplifier delivers an output power of about 67 W with the combining efficiency greater than 74% and power added efficiency close to 8% from 92 to 96 GHz.

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Data Availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Funding

The work for this grant was supported by the National Natural Science Foundation of China (Grant no.: 62071089).

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Authors and Affiliations

  1. Xidian University, Xian, China

    Xiaoshuai Wu

  2. University of Electronic Science and Technology of China, Chengdu, China

    Yaqian Liu & Mingzfhou Zhan

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  1. Xiaoshuai Wu
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  2. Yaqian Liu
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  3. Mingzfhou Zhan
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Correspondence to Mingzfhou Zhan.

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Wu, X., Liu, Y. & Zhan, M. 90–96 GHz 67 W Radial Power Combining Amplifier Based on Vortex Mode. J Infrared Milli Terahz Waves 43, 445–463 (2022). https://doi.org/10.1007/s10762-022-00846-6

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  • DOI: https://doi.org/10.1007/s10762-022-00846-6

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