UWB FR4-Based CPW-Fed Equilateral Triangular Slot Antenna for CubeSat Communication

In the midst of CubeSat’s fast growth, the telecommunication subsystem plays a critical role in the whole satellite mission as it ensures communication with earth stations. Therefore, performances of a CubeSat antenna must be taken into extreme ownership during the development process. This chapter aims to present new configuration of triangular slot antenna that is developed and optimized for operation at S-band. The presented design alone achieves good peak gain and ultra-wide band around 2.45 GHz while it radiates bidirectionally. The key approach aims, therefore, to minimize interferences with other CubeSat subsystems that are generated through the back lobes. A small area of the CubeSat box is used as metallic in order to reinforce energy of back lobes outside the CubeSat and hence increase its gain around the same operating frequency. The optimized configuration shows that a unidirectional radiation pattern with good gain of almost 10.0 dBi is obtained at 2.45 GHz. Accordance with this, The whole structure presents lightweight system and gives very low reflection coefficient of about 45 dB, good impedance matching, and − 10 dB BW ranging from 2.23 to 3.47 GHz (1.24 GHz) which makes it very suitable for uplink and downlink transmissions between the proposed CubeSat model and earth segments at S-band.