Dual-Band Monopole Antenna Feeds for Substrate Integrated Waveguides

This paper explores a new passive coupling technique for multi-band high speed signaling in Substrate Integrated Waveguides (SIW). Two monopole antenna feeds operating at two different center frequencies are used for coupling signals into the SIW. Multiple antenna feeds can be obstructions to each other's radiation, thus degrading the quality of the SIW feed and as a result transmission through the SIW deteriorates significantly. In this paper, optimization of the feeds' relative locations is studied to achieve maximum power coupling into the SIW with minimum interference between the monopole feeds.