One of the standards in wireless communication is Narrowband IoT. It deals with low power, small gain, and more life expectancy. The connectivity problem is reduced in narrowband design. This is achieved with microstrip antenna. Single patch is designed with the selected dielectric substrate. Several parameters are considered for the antenna design. The high value of dielectric constant reduces bandwidth in smaller patch for internet of things (IoT) design applications. These applications require gadgets for operating in licensed band of frequencies with less data rate and required antenna efficiency. When compared to dielectric, FR4 is a commonly available substrate and useful in smaller patches. In this chapter, two antennas are presented. The antennas were simulated in IE3D software and analyzed for Narrowband IoT (NB-IoT) with 100 MHz.