Ang LIU, Guanghao SHAO, Jiquan ZHAI, Xingwei YE, Guoqiang ZHANG. Radar Broadband Beamforming Technique Based on Sub-wavelength Stepped Optical Delay Line[J]. Acta Photonica Sinica, 2022, 51(3): 0306001
- Acta Photonica Sinica
- Vol. 51, Issue 3, 0306001 (2022)
Fig. 1. Architecture of electric beamforming system
Fig. 2. Phase distribution of the phased-array antenna
Fig. 3. Simulation results of beam squint at different microwave frequencies
Fig. 4. Simulation results of beam peak power at different microwave frequencies
Fig. 5. Simulation results of beam sidelobe power at different microwave frequencies
Fig. 6. Photonic subarray and experiment platform
Fig. 7. Amplitude and phase characteristics of the four-channel photonic subarray module
Fig. 8. Experimental results of antenna patterns at different azimuths and frequencies
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Table 1. Parameters of the X-band one-dimensional phased-array antenna
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Table 2. Comparison of beamforming performance of different schemes
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Table 3. Broadband beamforming experiment results
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