Antenna Designer´s Notebook-simulation of slot array antennas using standard network analysis program

It is shown how equivalent circuit models can be employed in a supercompact circuit simulation to investigate arrays of offset longitudinal broad-wall slots and tilted narrow-wall slots. An investigation of double broad-wall slots in a half-height waveguide is reported as an example of the use of the technique. The results can be used to optimize array bandwidth and to check the consequences of any changes introduced into the array design (tapering, tolerances, frequency offsets, etc.). It is noted that realistic radiation patterns can also be obtained using supercompact analysis