| 講演抄録／キーワード |
| 講演名 |
An X-band Portable 3D-printed Lens Antenna with Integrated Waveguide Feed for Microwave Imaging
○Nonchanutt Chudpooti・Prayoot Akkaraekthalin（KMUTNB） エレソ技報アーカイブはこちら |
| 抄録 |
（和） |
This paper presents a portable 3D-printed lens antenna fed by a standard rectangular waveguide at X-band for object classification. The proposed lens antenna can integrate with the standard rectangular waveguide without any additional assistant tools. The high impact polystyrene (HIPS) is used to design the 3D-printed hemispherical lens antenna by using the fused deposition modelling (FDM) technique. This additive manufacturing gives several advantages including rapid prototyping, better cost and time effectiveness. The geometry of the proposed lens antenna is designed based on basic hemispherical lens antenna with the ratio between the extension length and lens radius (L/R) of 1. Four lens radiuses, e.g., 30 mm, 40 mm, 50 mm, and 60 mm, are investigated to increase the gain of the antenna. The optimum dielectric tapered transition dimensions are simulated and obtained by using the 3D EM Simulation tool CST Studio, resulting in the reflection coefficient (S11) of four lens antennas better than −10 dB across the WR-90 band. From the simulation results, the lens radius of 30mm, 40mm, 50mm, and 60mm, provide the average realized gain of 16.1dBi, 17.7dBi, 18.7dBi, and 19.6dBi, respectively. To prove the radiation pattern of lens antenna design, four simulated radiation pattern and without integrated lens antenna at the center frequency of 10.3 GHz are investigated. The minimum and maximum investigated lens radius, e.g., 30 mm and 60 mm, respectively, are selected to fabricate to confirm the antenna performance. The half-power beamwidth (HPBW) of two lens radiuses are approximately 12 degrees. The narrow HPBW shows that the proposed lens antenna fed by standard waveguide can be applied to improve the resolution of the imaging system. The microwave imaging to classify the object will be subject to further study. |
| （英） |
This paper presents a portable 3D-printed lens antenna fed by a standard rectangular waveguide at X-band for object classification. The proposed lens antenna can integrate with the standard rectangular waveguide without any additional assistant tools. The high impact polystyrene (HIPS) is used to design the 3D-printed hemispherical lens antenna by using the fused deposition modelling (FDM) technique. This additive manufacturing gives several advantages including rapid prototyping, better cost and time effectiveness. The geometry of the proposed lens antenna is designed based on basic hemispherical lens antenna with the ratio between the extension length and lens radius (L/R) of 1. Four lens radiuses, e.g., 30 mm, 40 mm, 50 mm, and 60 mm, are investigated to increase the gain of the antenna. The optimum dielectric tapered transition dimensions are simulated and obtained by using the 3D EM Simulation tool CST Studio, resulting in the reflection coefficient (S11) of four lens antennas better than −10 dB across the WR-90 band. From the simulation results, the lens radius of 30mm, 40mm, 50mm, and 60mm, provide the average realized gain of 16.1dBi, 17.7dBi, 18.7dBi, and 19.6dBi, respectively. To prove the radiation pattern of lens antenna design, four simulated radiation pattern and without integrated lens antenna at the center frequency of 10.3 GHz are investigated. The minimum and maximum investigated lens radius, e.g., 30 mm and 60 mm, respectively, are selected to fabricate to confirm the antenna performance. The half-power beamwidth (HPBW) of two lens radiuses are approximately 12 degrees. The narrow HPBW shows that the proposed lens antenna fed by standard waveguide can be applied to improve the resolution of the imaging system. The microwave imaging to classify the object will be subject to further study. |
| キーワード |
（和） |
3D printing technology / Lens antenna / X-band / microwave imaging / / / / |
| （英） |
3D printing technology / Lens antenna / X-band / microwave imaging / / / / |
| 文献情報 |
信学技報 |
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