High Power Laser and Particle Beams, Volume. 36, Issue 7, 073005(2024)
Design and experiment of open waveguide array antenna with high power and high efficiency
Figures & Tables(17)
Fig. 1. Schematic diagram of open waveguide array with high power capacity and high efficiency
Fig. 4. Main parameters optimization of stepped transition section
Fig. 7. Simulation model and S-parameter curve of ET branch and coupled cavity
Fig. 11. Reflection characteristic testing scenario and physical array
Table 1. Characteristics of aperture distribution and pattern
View tableView in ArticleTable 1. Characteristics of aperture distribution and pattern
aperture distribution $ {E_{\text{H}}} $ $ {{\boldsymbol{f}}_x} $ θH D cosine $ {E_0}\cos \Bigg(\dfrac{{\pi x}}{a}\Bigg) $ $ 2\pi \dfrac{{\cos ({k_x}a/2)}}{{{\pi ^2} - {{({k_x}a)}^2}}}{E_0} $ 11.3 $ \dfrac{3\ 651}{\theta_{\text{E}}} $ dual-cosine $ {E_1}\left| {\sin \Bigg(\dfrac{{\pi x}}{{a/2}}\Bigg)} \right| $ $ 8\pi a\dfrac{{{{\cos }^2}({k_x}a/4)}}{{4{\pi ^2} - {{({k_x}a)}^2}}}{E_1} $ 8.8 $ \dfrac{4\ 688}{\theta_{\text{E}}} $ uniform $ {E_2} $ $ a\dfrac{{\sin \left( {{k_x}a/2} \right)}}{{{k_x}a/2}}{E_2} $ 8.4 $ \dfrac{4\ 911}{\theta_{\text{E}}} $
Table 2. Parameters of open waveguide unit cell
View tableView in ArticleTable 2. Parameters of open waveguide unit cell
a/mm a1/mm a2/mm ah/mm b/mm b1/mm b2/mm 17.00 29.48 35.00 38.50 5.45 9.00 12.8 bh/mm l1/mm l2/mm l3/mm t/mm d/mm 21.31 7.00 3.90 15.87 1.50 2.13
Table 3. Performance comparison of array antennas
View tableView in ArticleTable 3. Performance comparison of array antennas
reference type profile height/λ gain/dBi unit quantity aperture efficiency/% simulated or measured [ 8 ]waveguide slot fed horn array 3.4 21.2 4×4 94 simulated [ 9 ]composite horn array 3.2 42 64×8 80 simulated [ 10 ]ridged horn array 1.2 38 32×32 67 simulated [ 11 ]ridge gap waveguide fed horn array 1.8 26.5 4×4 85 simulated [ 12 ]mixed waveguide fed Gaussian horn array 20 43 64×64 50 simulated this work open waveguide array 2 22.6 4×4 90 simulated
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Yihong Wei, Xiangqiang Li, Yiyu Su, Jianqiong Zhang, Qingfeng Wang. Design and experiment of open waveguide array antenna with high power and high efficiency[J]. High Power Laser and Particle Beams, 2024, 36(7): 073005
Paper Information
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Received: Nov. 30, 2023
Accepted: Feb. 6, 2024
Published Online: Jun. 21, 2024
The Author Email: Xiangqiang Li (xiangqiang_li@163.com)
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