High Power Laser and Particle Beams, Volume. 36, Issue 1, 013005(2024)
Primary study on time control technology of active phased array based on photoconductive microwave source
Figures & Tables(10)
Fig. 1. Scheme of the optically controlled phased array system based on linear SiC devices, including thephotoelectric conversion components and the burst-mode operation pulse laser
Fig. 2. Scheme of the optically controlled phased array system in the future, where the optical signal is delayed first and then amplified
Fig. 5. Analysis results of OTTD phased array considering time delay step
Fig. 6. Analysis results of OTTD phased array considering time delay error
Fig. 7. Increment of beam sidelobe power, average beam squint and reduction of beam peak power against phase standard deviation in the simulation result in CST
Table 1. Delay variance when the loss is less than 10% for a 1×
n array antennaView tableView in ArticleTable 1. Delay variance when the loss is less than 10% for a 1×
n array antennanumber of array elements 90% of the theoretical gain/dB time delay index at 1 GHz/ps time delay index at 3 GHz/ps 1 × 411.58 26 9 1 × 817.6 30 10 1 × 1019.54 32 11
Table 2. Delay variance when the loss is less than 10% for a
m ×n array antennaView tableView in ArticleTable 2. Delay variance when the loss is less than 10% for a
m ×n array antennanumber of array elements 90% of the theoretical gain/dB time delay index at 1 GHz/ps time delay index at 3 GHz/ps 2 × 417.6 29 10 8 × 835.67 41 13-14 8 × 1037.6 43 13-14
Table 3. Influence of phase variance on the key indicators of phased array
View tableView in ArticleTable 3. Influence of phase variance on the key indicators of phased array
phase standard deviation/(°) element number beam squint/(°) main lobe power/dB side lobe power/dB 10 10 0.40 −0.10 +3.00 15 10 0.64 −0.22 +4.64 20 10 0.94 −0.40 +5.95
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Xinyue Niu, Yanran Gu, Xu Chu, Jinmei Yao, Muyu Yi, Langning Wang, Tao Xun. Primary study on time control technology of active phased array based on photoconductive microwave source[J]. High Power Laser and Particle Beams, 2024, 36(1): 013005
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Received: Aug. 11, 2023
Accepted: Oct. 22, 2023
Published Online: Mar. 21, 2024
The Author Email: Jinmei Yao (yao_jinmei@163.com), Tao Xun (xtao_0301@hotmail.com)
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