• High Power Laser and Particle Beams
  • Vol. 37, Issue 5, 053001 (2025)
Yaxin Chen, Xiangqiang Li*, Jianqiong Zhang, Qingfeng Wang, and Xianfeng Tang
Author Affiliations
  • School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China
  • show less
    DOI: 10.11884/HPLPB202537.240391 Cite this Article
    Yaxin Chen, Xiangqiang Li, Jianqiong Zhang, Qingfeng Wang, Xianfeng Tang. Design of high power miniaturized stepped double semicircular waveguide mode-transducing antenna[J]. High Power Laser and Particle Beams, 2025, 37(5): 053001 Copy Citation Text show less
    Antenna profile
    Fig. 1. Antenna profile
    Mode coupling of single step waveguide
    Fig. 2. Mode coupling of single step waveguide
    Multistep discontinuous geometry
    Fig. 3. Multistep discontinuous geometry
    Stepped semicircular waveguide radiator
    Fig. 4. Stepped semicircular waveguide radiator
    Numerical calculation of S parameters
    Fig. 5. Numerical calculation of S parameters
    Numerical calculation of patterns
    Fig. 6. Numerical calculation of patterns
    Power divider profile
    Fig. 7. Power divider profile
    Electric field distribution of power divider
    Fig. 8. Electric field distribution of power divider
    Power divider S parameters
    Fig. 9. Power divider S parameters
    Power divider transmission phases
    Fig. 10. Power divider transmission phases
    Electric field distribution of the antenna at a given time
    Fig. 11. Electric field distribution of the antenna at a given time
    Antenna S parameters and gain curve vs. frequency
    Fig. 12. Antenna S parameters and gain curve vs. frequency
    Distribution of the antenna's maximum electric field
    Fig. 13. Distribution of the antenna's maximum electric field
    r1r2r3rm1rm2rm3L1L2L3L4L5
    47.7865.3035.719.1012.345.577.272.702.673.066.51
    Table 1. Optimized parameters (mm)
    Ref.mode converter type and antenna typemode converter lengthhorn sizecombined sizepower capacity
    [11]coaxial conductor with inserted plate, horn4.73λ1.4λ×1.4λ×1.5λ1.4λ×1.4λ×6.28λnot mentioned@4.05 GHz
    [12]2 CirWG-to-4-orthometric-RecWGs, horn>4.75λ1.4λ×1.4λ×1.5λ1.4λ×1.4λ×(>6.25λ)2 GW@9.5 GHz
    [13]rectangular plate, horn2λ1.4λ×1.4λ×1.5λ1.4λ×1.4λ×3.55λ558 MW@8.45 GHz
    [14]triangular plate, horn2.46λ1.4λ×1.4λ×1.5λ1.4λ×1.4λ×4.01λ1 GW@3.4 GHz
    this workrectangular plate with stepped-expanding aperture1.18λ×1.18λ×2.43λ906 MW@2.85 GHz
    Table 2. Comparison with separately designed technical routes
    Yaxin Chen, Xiangqiang Li, Jianqiong Zhang, Qingfeng Wang, Xianfeng Tang. Design of high power miniaturized stepped double semicircular waveguide mode-transducing antenna[J]. High Power Laser and Particle Beams, 2025, 37(5): 053001
    Download Citation