A CPW Feed Orthogonal Wideband Quad-Port Conformal MIMO Antenna for Satellite Applications

In this proposed paper, a quad-port C band conformal MIMO antenna is designed. This antenna configuration has four similar CPW-fed elements of size 10x15 mm. It is supported with flexible FR4 epoxy dielectric material with relative permittivity of 4.4 and a loss tangent of 0.02. The proposed antenna achieved an impedance bandwidth in accordance with the -10dB reference from frequency ranges of 4.5 GHz to 7.56 GHz which covers C band satellite applications. Good isolation characteristics are achieved which is less than -15 dB with the help of the orthogonal arrangement of the four MIMO antennas. For the excellent working of MIMO, some of the characteristics like Mean Effective Gain, Total Active Reflection, Envelope Correlation Coefficient are considered as important and they are investigated and found that they are within the standards as MEG < 3dB and ECC < 0.5. The entire work is done with the help of ANSYS High-Frequency Structure Simulator (HFSS) software.