Design of a high-power miniaturized waveguide E-plane heterodyne power combiner

Su Yiyu; Li Xiangqiang; Wei Yihong; Zhang Jianqiong; Wang Qingfeng

doi:10.11884/HPLPB202436.230433

Volume 36 Issue 7

May 2024

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Article Navigation > High Power Laser and Particle Beams > 2024 > 36(7): 073003

Su Yiyu, Li Xiangqiang, Wei Yihong, et al. Design of a high-power miniaturized waveguide E-plane heterodyne power combiner[J]. High Power Laser and Particle Beams, 2024, 36: 073003. doi: 10.11884/HPLPB202436.230433

Citation:

Su Yiyu, Li Xiangqiang, Wei Yihong, et al. Design of a high-power miniaturized waveguide E-plane heterodyne power combiner[J]. High Power Laser and Particle Beams, 2024, 36: 073003. doi: 10.11884/HPLPB202436.230433

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Design of a high-power miniaturized waveguide E-plane heterodyne power combiner

doi: 10.11884/HPLPB202436.230433

School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2023-12-10
Accepted Date: 2024-02-28
Rev Recd Date: 2024-02-28

Available Online: 2024-03-18

Publish Date: 2024-05-31

Abstract

Abstract

The existing heterodyne power combiners are not suitable for applications where input and output signals need to be in the same direction with limited space. To solve the problem, this paper designs a high-power and miniaturized heterodyne power combiner operating at frequencies of 9.3 GHz and 9.7 GHz. Based on the traditional filter-based heterodyne power combiner, the proposed design utilizes an over-mode rectangular waveguide E-plane power combiner. The waveguide filters are parallel and the input ports are also located on the same plane, so that the combiner is suitable for the specific applications. The sizes of the rectangular waveguide are reduced to suppress higher-order modes. Besides, the distance between mode strips is decreased in integer multiples of half-wavelength of the waveguide to compresses the overall length with high power capacity. The combiner has a length of 9.2λ, a width of 1.5λ and a height of 2.8λ, while λ is the wavelength corresponding to the frequency of 9.5 GHz in free space. At 9.3 GHz and 9.7 GHz, the return loss of the combiner is more than 20 dB, its combining efficiency is more than 98% , and the isolation between input ports is more than 20 dB. At microwave pulse breakdown threshold of 80 MV/m, the combiner provides a power capacity of 310 MW.
- heterodyne power combiner,
- rectangular waveguide E-plane power combining,
- waveguide filter,
- high-power capacity,
- miniaturized

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References(17)

References

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