X-Band Circularly Polarized Antenna for CubeSat Communication

A compact size high gain circularly polarized patch antenna with polarization diversity is presented for CubeSat communication. The antenna has polarization diversity and could support both Right-Hand Circular Polarization (RHCP) and Left-Hand Circular Polarization (LHCP) at the same time. The impedance bandwidth of the antenna is 27% (7.1GHz – 9.4GHz) which is represented by the S
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result. The axial ratio of the proposed antenna is 23% (7.2GHz – 9.1GHZ) and the gain is 5.5 dBic. The radiation pattern of the antenna convenient for CubeSat is also provided.