Wideband, circularly polarized, crossed, bowtie dipole antenna for navigation satellite system

In the article, a wideband, high-efficient, circular polarized(CP) antenna for COMPASS navigation satellite system is presented. It works at B1(1.561098GHz) and B1-2(1.589742GHz) frequency band and it can also be used for global positioning system(GPS) at L1(1.57542GHz) frequency band. The radiating elements are two crossed bowtie dipole with rectangular gaps in the middle of the bowtie elements. A vacant-quarter printed ring is used to realize circularly polarized(CP) by and the gaps in the middle of the bowtie elements are designed to optimize CP and to produce resonances. The bowtie structure is used to widen the bandwidth. An inverted, rotary table, cavity-backed reflector is used to control the radiation pattern and acquire highly gain. The proposed antenna is fed by a single electricity port.