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The method of mode matching (MM) is used to construct ideal waveports in the context of the method of moments (MoM). The waveports can provide not only excitations as sources but also perfectly matched loads for traveling-wave slotted waveguide antennas. Additionally, the application of the higher order basis functions (HOBs) in MoM significantly reduces the number of unknowns compared to the RWG basis functions. Numerical results show that the proposed method is accurate and efficient for traveling-wave slotted waveguide antennas. Finally, a Ka-band waveguide array with 1976 narrow-wall slots is solved using a high-performance cluster. [ABSTRACT FROM PUBLISHER]

Currently, more and more practical engineering applications place antenna system on the electrically large platform. This paper deals with the problem of antennas mounted on large platform from two aspects--radiation pattern and system electromagnetic compatibility (EMC). To achieve an accurate and effective computation, this paper applies method of moment (MoM) with Higher-order basis functions solver with large-scale parallel computation technique. And finally some real-life examples are presented to describe how to install antennas on the platform reasonably. [ABSTRACT FROM AUTHOR]