Primary study on time control technology of active phased array based on photoconductive microwave source

Niu Xinyue; Gu Yanran; Chu Xu; Yao Jinmei; Yi Muyu; Wang Langning; Xun Tao

doi:10.11884/HPLPB202436.230260

Volume 36 Issue 1

Jan. 2024

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Niu Xinyue, Gu Yanran, Chu Xu, et al. Primary study on time control technology of active phased array based on photoconductive microwave source[J]. High Power Laser and Particle Beams, 2024, 36: 013005. doi: 10.11884/HPLPB202436.230260

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Niu Xinyue, Gu Yanran, Chu Xu, et al. Primary study on time control technology of active phased array based on photoconductive microwave source[J]. High Power Laser and Particle Beams, 2024, 36: 013005. doi: 10.11884/HPLPB202436.230260

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Primary study on time control technology of active phased array based on photoconductive microwave source

doi: 10.11884/HPLPB202436.230260

Niu Xinyue^1
,,
Gu Yanran¹,
Chu Xu¹,
Yao Jinmei^{1, 2
,
,},
Yi Muyu^{1, 2},
Wang Langning^{1, 2},
Xun Tao^{1, 2
,
,}

1.
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2.
Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China

Received Date: 2023-08-11
Accepted Date: 2023-10-22
Rev Recd Date: 2023-10-22

Available Online: 2024-01-15

Publish Date: 2024-01-15

Abstract

Abstract

Solid-state photoconductive microwave source based on wide-bandgap photoconductive semiconductor is a new way of high power microwave generation. The scheme has the characteristics of high power density and wide frequency band, and its low time jitter characteristic makes it have great potential in power synthesis. The construction of active phased array of photoconductive microwave devices using optical beamforming network is an important way for the application of photoconductive microwave devices. In this paper, the principle of optical microwave phased array system is analyzed, and the theoretical models of differential true delay phased array and true delay phased array considering phase random error are constructed. The key factors affecting power synthesis and beam scanning are quantitatively analyzed and simulated, and the delay precision index is proposed.The results show that for the n×10 array transmitting signal at 1 GHz, when the delay phase variance is less than 10 ps, the pointing deviation is less than 0.2° and the peak gain loss is less than 2%. When the delay step accuracy is less than 10 ps, the pointing deviation is less than 0.2°, and the peak gain loss is less than 0.03%. On this basis, the real time delay network architecture of photoconductive microwave is designed, which provides a reference for the development of higher power and larger scale photoconductive microwave synthesis technology in the future.
- wide-bandgap photo-conductive semiconductor,
- active phased array,
- optical beamforming network,
- optical true time delay,
- time delay error

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References(23)

References

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