The increased demands for fast, compact electronic devices had significantly been noticed in the past twenty years, especially with the massive development in technology and fabrication tools. This need including many more have posed significant challenges for the designers especially in high-frequency high-switching electronic devices. One of such challenges is the excessive noise generated from high speed integrated circuits, well known as Simultaneous Switching Noise. Over the years, several approaches were introduced to overcome such disturbance. With the birth of metamaterials, potential use of them in switching noise mitigation started to evolve. In this paper, two approaches to tackle the switching noise are explored targeting applications for high-speed printed circuit boards at 2.45 GHz. One of which suits narrowband applications, while the other works for wideband applications. A new populated power plane using complementary metamaterials is also presented and results are discussed.