Circularly Polarized Substrate-Integrated Waveguide Antenna Array at Ka-Band

This contribution deals with the design, implementation, and test of a circularly polarized 3x3 antenna array at 30 GHz. The array elements are realized as open-ended substrateintegrated waveguides (SIW). Focus of this paper is on the polarizer of the single antenna and on the realization of the array. Simulation as well as measurement data is presented and discussed.