Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator
The optimum hole diameter of a ring reflector was experimentally investigated using an axial virtual cathode oscillator (vircator) to enhance its microwave power. The ring reflector enhances the microwave power from the axial vircator by forming a cavity. The ring reflector was installed 9 mm behind...
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MDPI AG
2022-06-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/13/2002 |
| _version_ | 1797480391704051712 |
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| author | Wan-Il Kim Se-Hoon Kim Kwang-Cheol Ko |
| author_facet | Wan-Il Kim Se-Hoon Kim Kwang-Cheol Ko |
| author_sort | Wan-Il Kim |
| collection | DOAJ |
| description | The optimum hole diameter of a ring reflector was experimentally investigated using an axial virtual cathode oscillator (vircator) to enhance its microwave power. The ring reflector enhances the microwave power from the axial vircator by forming a cavity. The ring reflector was installed 9 mm behind the anode. The optimum hole diameter of the ring reflector was analyzed through simulations and experiments by changing the diameter from 60 mm to 160. PIC simulations show that the maximum peak microwave power was generated when the hole diameter was 116 mm and enhanced by 210%. The experiments show similar results to the simulations. The largest peak maximum power was 23.67 MW when the hole diameter was 120 mm. The simulations show that the dominant microwave frequency was formed between 5.33 GHz and 6.7 GHz. The experiments show that the dominant microwave frequency was formed between 5.3 GHz and 5.8 GHz. The frequency trend was approximately similar to that of the simulation results. However, the trend depending on the hole diameter was not as obvious as in the simulations. Although the frequency change was not as clear as in the simulations, experiments show that the hole diameter of the ring reflector affects the vircator operation. |
| first_indexed | 2024-03-09T21:59:19Z |
| format | Article |
| id | doaj.art-1dbb5b04ca0444708d91e8d63cc85a17 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T21:59:19Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-1dbb5b04ca0444708d91e8d63cc85a172023-11-23T19:51:17ZengMDPI AGElectronics2079-92922022-06-011113200210.3390/electronics11132002Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode OscillatorWan-Il Kim0Se-Hoon Kim1Kwang-Cheol Ko2Department of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, KoreaDepartment of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, KoreaDepartment of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, KoreaThe optimum hole diameter of a ring reflector was experimentally investigated using an axial virtual cathode oscillator (vircator) to enhance its microwave power. The ring reflector enhances the microwave power from the axial vircator by forming a cavity. The ring reflector was installed 9 mm behind the anode. The optimum hole diameter of the ring reflector was analyzed through simulations and experiments by changing the diameter from 60 mm to 160. PIC simulations show that the maximum peak microwave power was generated when the hole diameter was 116 mm and enhanced by 210%. The experiments show similar results to the simulations. The largest peak maximum power was 23.67 MW when the hole diameter was 120 mm. The simulations show that the dominant microwave frequency was formed between 5.33 GHz and 6.7 GHz. The experiments show that the dominant microwave frequency was formed between 5.3 GHz and 5.8 GHz. The frequency trend was approximately similar to that of the simulation results. However, the trend depending on the hole diameter was not as obvious as in the simulations. Although the frequency change was not as clear as in the simulations, experiments show that the hole diameter of the ring reflector affects the vircator operation.https://www.mdpi.com/2079-9292/11/13/2002high-power microwave sourceHPM sourcevirtual cathode oscillatorvircatorring reflectorPFN-Marx generator |
| spellingShingle | Wan-Il Kim Se-Hoon Kim Kwang-Cheol Ko Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator Electronics high-power microwave source HPM source virtual cathode oscillator vircator ring reflector PFN-Marx generator |
| title | Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator |
| title_full | Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator |
| title_fullStr | Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator |
| title_full_unstemmed | Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator |
| title_short | Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator |
| title_sort | investigation of the optimum diameter of the ring reflector for an axial virtual cathode oscillator |
| topic | high-power microwave source HPM source virtual cathode oscillator vircator ring reflector PFN-Marx generator |
| url | https://www.mdpi.com/2079-9292/11/13/2002 |
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