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ZHANG Shue, SUN Lihong, MENG Xian'gai. Radiant quantitive study of cylindrical cavity for humidity measurement[J]. CHINESE JOURNAL OF RADIO SCIENCE, 2016, 31(5): 962-968. doi: 10.13443/j.cjrs.2016030101
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The cylindrical resonant cavity in steam turbine, as a wetness measurement sensor, works in TE011 mode. Multiple annular slots are grooved at different positions on both ends of the cylindrical cavity to sample the wet steam in real time. The electromagnetic field radiates through these slots to the surroundings, influencing the resonant characteristics and electromagnetic environment of the resonant cavity. Research on the radiation from the annular slots at both ends of the cylindrical resonant cavity is valuable to reduce electromagnetic radiation. The electromagnetic field equivalence theorem, boundary value condition and Hankel transform were applied. The electromagnetic field distribution of the slots structure was derived by mode matching, and the radiation situations of different number, position, width, and thickness of annular were given. MATLAB was used to calculate the radiation of the annular slots, and HFSS simulation software was used to simulate the cylindrical resonant cavity with annular slots, and numerical results of radiation of the annular slots were obtained. The simulation results verify the correctness of the calculation method. The optimum structure parameters of cylindrical resonant cavity with annular slots as the wetness sensor is presented.
| [1] |
OMIYA M, HIKAGE T, OHNO N, et al. Design of cavity backed slot antennasusing the finite difference time domain technique[J]. IEEE transactions on antennas propagation, 1998, 46(12):1853-1858. doi: 10.1109/8.743823
|
| [2] |
ZEONG J W, EOM H J. Radiation from cavity backed aperturesin a conducting plane[J]. IEEE transactions on antennas propagation, 2005, 53(8): 2761-2764. doi: 10.1109/TAP.2005.851785
|
| [3] |
REDDY C J, DESHPANDE M D, COCKRELL C R, et al. Radiation characteristics of cavity backed aperture antennas in finite ground plane using the hybrid FEM/MoM technique and geometrical theory of diffractio[J]. IEEE transactions on antennas propagation, 1996, 44(10): 1327-1333. doi: 10.1109/8.537326
|
| [4] |
NAKANO H, SUGAMA M, NAKAYAMA K, et al. A circular aperture antenna backed by a cavity[C]//Proceeding of IEEE Antennas and Propagation Society International Symposium, 1999, 1: 586-589.
|
| [5] |
PAEK J K, EOM H J. Cylindrical cavity-backed antenna[J]. IEEE antennas wireless propagation letters, 2009, 8: 852-855. doi: 10.1109/LAWP.2009.2027450
|
| [6] |
KIM J H, PARK Y B. Elecctromagnetic radiation from a circular cavity with circular apertures in a conducting plane[J]. IEEE transaction on antennas and propagation, 2014, 62(9): 4846-4851. doi: 10.1109/TAP.2014.2332006
|
| [7] |
SHAFAI L, NOGHANIAN S. Analysis of dielectric-loaded annular slot array antenna[J]. Electron computer engineering, 2003, 28(1): 11-18. doi: 10.1109/CJECE.2003.1426069
|
| [8] |
KIM J H, EOM H J. Radiation from multiple annular slots on a circular cylindrical cavity[J]. Electromagnetic waves application, 2007, 21(1): 47-56. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=1beb784f739067b6e1cd3b935db378f0
|
| [9] |
KIM J H, EOM H J. Coaxially fed annular slot array antenna[J]. IEEE transactions on antennas propagation, 2008, 56(2): 590-592. doi: 10.1109/TAP.2007.915485
|
| [10] |
KIM J H, EOM H J. Scattering from an annular slot on a radial waveguide[J]. Microwave optics technology letters, 2006, 48(2): 354-357. doi: 10.1002/(ISSN)1098-2760
|
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