@article {09_IntJRFMiCAE_CORCOLES_PerformanceUslot, title = {Performance characterization of wideband, wide-angle scan arrays of cavity-backed U-slot microstrip patch antennas}, journal = {International Journal of RF and Microwave Computer-Aided Engineering}, volume = {19}, number = {3}, year = {2009}, pages = {389{\textendash}396}, abstract = {This work looks at the use of wideband cavity-backed U-slot microstrip antennas in finite phased arrays. This configuration retains the single-patch and single-layer characteristics of conventional microstrip antenna arrays and provides a good impedance matching over wider scan angles when electrically thick substrates are used to improve the frequency bandwidth. The characteristics of finite phased arrays of U-slot rectangular microstrip patches enclosed in cylindrical cavities are analyzed from a validated hybrid methodology based on the finite element method, the modal analysis, and the properties of spherical waves. The results are compared with those obtained using an infinite array model. {\textcopyright} 2008 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2009.}, keywords = {broadband U-slot patch antenna, cavity-backed microstrip antennas, finite element method, finite phased array, spherical mode expansion}, issn = {1099-047X}, doi = {10.1002/mmce.20361}, url = {http://dx.doi.org/10.1002/mmce.20361}, author = {J C{\'o}rcoles and Gonz{\'a}lez, M A and Rubio, J and Zapata, J} }