A Circularly Polarized Circularly-Slotted-Patch Antenna with Two Asymmetrical Rectangular Truncations for Nanosatellite Antenna

In this paper, a circularly polarized slot-patch antenna for nanosatellite is presented. The

novel design of the circularly polarized wave conducted by two asymmetrical rectangular-truncation

techniques implemented on a circularly-slotted-patch on the front side and a deformed-shifted-feedline

on the back side of the substrate. The antenna is printed on substrates with the dielectric constant of

2.17 and thickness of 1.6 mm. The resonant frequency of the proposed antenna is set at 2.2 GHz with

the minimum requirement of the axial ratio bandwidth (ARBW) of 300 MHz. The proposed antenna

produces under 10 dB impedance bandwidth (IBW) 1.2765 GHz or equal to 58% (1.7235–3 GHz) with

Left-Handed Circular Polarization (LHCP). The average antenna gain reaches 4.5 dBic at 2.2 GHz and

the ARBW 327.5 MHz or about 14.88% (2.0275–2.355 GHz). This paper includes the description and

presentation of the completed discussion.