Ku-band novel high-power circular waveguide TE<sub>01</sub> mode conversion power synthesizer

Cai Mao; Zheng Zhiwen; Xu Yong; Liu Chengrang; Cheng Yuqi; Zhou Xinyu; Li Jinshuai; Wei Yanyu; Cai Jinchi

doi:10.11884/HPLPB202537.250048

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Cai Mao, Zheng Zhiwen, Xu Yong, et al. Ku-band novel high-power circular waveguide TE01 mode conversion power synthesizer[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250048

Citation:

Cai Mao, Zheng Zhiwen, Xu Yong, et al. Ku-band novel high-power circular waveguide TE₀₁ mode conversion power synthesizer[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250048

Cai Mao, Zheng Zhiwen, Xu Yong, et al. Ku-band novel high-power circular waveguide TE01 mode conversion power synthesizer[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250048

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Ku-band novel high-power circular waveguide TE₀₁ mode conversion power synthesizer

doi: 10.11884/HPLPB202537.250048

1.
School of Electronic Science and Engineering, Sichuan Provincial Institute for Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
2.
Beijing Vacuum Electronics Research Institute, Beijing 100015, China

Received Date: 2025-03-19
Accepted Date: 2025-07-20
Rev Recd Date: 2025-07-17

Available Online: 2025-07-23

Abstract

Abstract

Background
In modern radar and communication systems, power amplifiers determine the system's transmission output power and bandwidth, thereby affecting key performance metrics such as operating range and resolution. As operating frequencies continue to rise, the output power of a single power amplifier device is limited and cannot fully meet the current demands of radar and communication systems for broadband and high power. Therefore, it is necessary to design power synthesizer to achieve multi-channel power synthesis.
Purpose
In order to achieve broadband high-power synthesis output in the microwave bands, this paper presents a novel high-power, broadband four-way rectangular waveguide TE₁₀ mode to circular waveguide TE₀₁ mode conversion power synthesizer.
Methods
This mode conversion power synthesizer consists of two parts, namely the structure of four rectangular waveguide TE₁₀ mode synthesis and transformation to cross waveguide TE₂₂ mode, and the structure of cross waveguide TE₂₂ mode transformation to overmoded circular waveguide TE₀₁ mode.
Results
The simulation results show that in the Ku-band of 15.2−18.2 GHz, the synthesis efficiency of TE₁₀-TE₀₁ mode is greater than 99.4%, and it can withstand a maximum pulse power output of 1.6 MW. The back-to-back cold test of the experimental verification sample shows that the lowest synthesis efficiency of the power synthesizer in the frequency band of 15.2−18.2 GHz is 94%.
Conclusions
The simulation results and cold test show that the mode conversion power synthesizer has the characteristics of wide working bandwidth, high synthesis efficiency, and high power capacity, which can effectively solve the problem of high-power synthesis output in microwave and millimeter-wave bands.
- power synthesis,
- mode converter,
- Ku-band,
- oversized circular waveguide,
- high power microwave

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References(15)

References

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