Abstract-In Chinese Compass Navigation Satellite System (CNSS for short), dual-band antennas are more attractive, because they can provide both navigation and communication services. In this paper, we present a dual-band dual-circular-polarized planar spiral-slot CNSS antenna. This antenna works at L band (1616 ± 5 MHz, left-handed circular polarization, LHCP) and S band (2492 ± 5 MHz, right-handed circular polarization, RHCP). Numerical results show that the impedance bandwidth (S 11 < −10 dB), 3 dB axial ratio bandwidth and antenna gain at L band are about 242 MHz, 79 MHz and 4.92 dB, respectively, while the simulated impedance bandwidth (S 11 < −10 dB), 3 dB axial ratio bandwidth and antenna gain at S band are about 180 MHz, 58 MHz and 5.25 dB, respectively. An experiment was carried out to verify our design. Measured results show that impedance bandwidth (S 11 < −10 dB) and 3 dB axial ratio bandwidth L band are about 300 MHz and 14 MHz, respectively, while the measured impedance bandwidth (S 11 < −10 dB) and 3 dB axial ratio bandwidth at S band are about 210 MHz, 10 MHz, respectively. The measured results basically agree with the simulated ones and meet the requirement of CNSS terminal antennas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.