Dissertation > Industrial Technology > Radio electronics, telecommunications technology > General issues > Basic theory > Radio wave propagation,the propagation mechanism

Study of Electromagnetic Coupling Through Apertures

Author ZhangHuiWen
Tutor ShiXiaoWei
School Xi'an University of Electronic Science and Technology
Course Electromagnetic Field and Microwave Technology
Keywords Generalized network method Singular integral Coupling into Slot Transmission scattering cross section
Type Master's thesis
Year 2005
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In this paper, application of generalized network studied the theory of electromagnetic waves through the hole coupling . First introduced the principle of the method of moments , followed by solving the the aperture coupled problem , and the relationship of the two methods for solving generalized network method and eigenmode . Followed by the the singular integral problems encountered in the generalized network aperture coupling analysis , singular integral using the Green's function of the eight first-order approximation formulas and other product transformation method for processing . The Green's function of the derivative of the singular integral with a singular point of the theory of generalized functions to eliminate processed . And calculate the the infinite conductor surface porous coupling aperture surface equivalent magnetic current distribution . Finally, a hole cavity coupling structure . First dipole characteristics of the holes , the near-field approximation quasi - static distribution of far-field scattering field approximation for the dipole radiation field . According to this feature of the holes , and generalized network method to analyze the nature of the generalized admittance matrix , the equivalent magnetic current waves radiated from the commencement of the model used to ignore the high-order mode mutual coupling between the two holes , according to the network theory, generalized admittance matrix is equivalent to a two- port network . Then analyzes the nature of the transfer admittance and transmission scattering cross section , we can see that the cavity resonance transmission independent of the size of the scattering cross - sectional face seam and cavity . The transmission scattering section of the media and the aperture size changes .

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