تجزیه و تحلیل جریان راهنمای دی الکتریک و کاربرد آن در آنتن موج چکه کن
Abstract: This thesis is concerned with the analysis of Inset Dielectric Guide (IDG) and its applications on microwave and millimetric leaky wave antennas. IDG, as a variation of Image Line, seems to offer better performance, easier manufacture and particular promise for antenna applications. A rigorous six-component hybrid mode analysis by using the Transverse Resonance Diffraction method is reviewed briefly. Then LSE/LSM approximation is used in the examination of the dispersion characteristics for relatively deeper and shallower slots. The results show excellent agreement with the measured curves. IDG as an open transmission medium includes in its spectrum a range of continuous modes. This thesis pays appropriate attention on the mode completeness and the orthonormalization of the discrete and continuous spectrum of the IDG in the LSE/LSM description. Green\'s function is derived in the form of eigenfunction expansion, which is an essential prerequisite to the analysis of discontinuity problems. A variational expression for the equivalent circuit of the radiating dipole is derived and applied to the design of a 23-element vertically polarized array. The array is built and tested showing excellent performance. IDG antennas are concluded to be of practical importance due to their easier factoring, low cost and reasonably good performance. Further work is in progress.