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oai:www.ideals.illinois.edu:2142/22602 2023-07-10 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Aksun, Muhammed Irsadi 2011-05-07T13:45:09Z 2011-05-07T13:45:09Z 10000-01-01 1991 Microstrip and slot antennas with novel feeds suitable for monolithic microwave integrated circuit (MMIC) applications are investigated both experimentally and theoretically, using the cavity model as well as a full-wave analysis. The input impedance of a microstrip antenna fed by an arbitrarily oriented slot in the ground plane is computed using the cavity model theory. This study is extended to the calculation of the feed locus for circular polarization operation. Simple design formulas are obtained for CP electromagnetically excited microstrip antennas. The reflection coefficient of a slot element fed by a semi-infinite microstrip line is calculated by the method of moments in conjunction with multiple scattering analysis. The reflection coefficient of the open microstrip line, and the transmission and reflection coefficients of the slot, fed by the infinite microstrip line, are first calculated. Then, the input impedance of the microstrip line-fed slot is obtained for an arbitrary stub length. The coplanar waveguide-fed microstrip antenna is then analyzed using the full-wave analysis. Boundary conditions are enforced on a portion of the coplanar waveguide as well as on the patch antenna. The integral equations are solved by applying the Galerkin method of moments in the spectral domain. The reflection coefficient on the coplanar waveguide is calculated for several frequencies and compared with the experimental results. Made available in DSpace on 2011-05-07T13:45:09Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9124376.pdf: 2587885 bytes, checksum: 2cd51e7685bab1f913d243933d115167 (MD5) Previous issue date: 1991 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:58:44Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:27:39-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9124376 (UMI)AAI9124376 http://hdl.handle.net/2142/22602 eng Copyright 1991 Aksun, Muhammed Irsadi Engineering, Electronics and Electrical Novel feeds for microstrip and slot antennas: Theory and experiment text Electrical and Computer Engineering Electrical and Computer Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.