Analysis and experiment of a wideband phased array of monopole excited parallel plate waveguides

Recently, J.B. Jaro, S.R. Laxipati, and B.D. Wright (1987 IEEE AP-S Int. Symp. Int., p.290-394) presented an experimental investigation on a wideband phased array of coaxially fed probes in parallel-plate waveguides. Their measured results showed a design with aperture match over +or-60 degrees in E- and H-plane scanning over 40% frequency bandwidth. In the present work, the authors provide a modal analysis of this wideband phased array of monopole excited parallel-plate waveguides and a comparison of the numerical results with experimental results obtained by the measurements of waveguide simulators and a 9*9 test array. The numerical results are in agreement with the experimental data. An example design confirms that the array can be matched over +or-60 degrees scan coverage over a 40% frequency bandwidth.<>