Abstract :
A wideband unidirectional circularly polarized antenna is proposed for Global Positioning System (GPS) and Galileo Systems. The antenna consists of a printed dipole-like element, spaced from a planar reflector. The fed element comprises a printed asymmetrical dipole with an open-ended slot between the feed lines. The operating frequency range covers the GPS system (L1, L2), GLONASS and Galileo system (E5, E6, E1-E2-L1). A parametric study of key parameters including reflector size and spacing are discussed. The impedance bandwidth, axial-ratio and gain are analyzed.
Keywords :
Global Positioning System; broadband antennas; dipole antennas; directive antennas; planar antennas; reflector antenna feeds; satellite antennas; GLONASS system; GPS system; Galileo system; Global Positioning System; axial-ratio analysis; fed element; feed lines; gain analysis; impedance bandwidth analysis; open-ended slot; planar reflector; printed asymmetrical dipole antenna; printed dipole-like element; reflector size; wideband unidirectional circularly polarized antenna; Bandwidth; Broadband antennas; Dipole antennas; Frequency measurement; Global Positioning System; Microwave antennas;
