Abstract:
The Global positioning satellite (GPS) antenna is widely used in almost all kinds of cell phones and hand-held equipments, therefore GPS antenna should be small, cost-eff...Show MoreMetadata
Abstract:
The Global positioning satellite (GPS) antenna is widely used in almost all kinds of cell phones and hand-held equipments, therefore GPS antenna should be small, cost-effective and easy to be integrated with other devices. Design parameter optimization of a novel GPS antenna is presented. The design specifications include: dual working band at 1575.42 ± 1.023MHz and 1561.42±2.048 MHz, right-handed circular polarization (CP), polarization gain ≥ 0 dBic for elevation angle ≥ 30 deg and polarization gain ≥ 4 dBic for elevation angle = 90 deg. This antenna consists of a copper patch as radiator, a single dielectric layer of Arlon AD450 and a ground plane. The overall size of this antenna is 0.315λ0 × 0.315λ0, where λ0 is free space wavelength of the lowest working frequency. A square patch is chosen as the basic radiator and orthogonally fed by coaxial cable, the patch is attached, respectively, with a pair of rectangular parasitic stubs in the horizontal and the vertical directions with each edge attached with a parasitic stub. By carefully engineering the edge length of the main patch, the height and width of the parasitic subs and the position of the feeding point, double degenerate modes with 45 deg and 135 deg polarizations are obtained at 1575 and 1561 MHz, which plays key roll in design of this dual-band right-handed circularly polarized (RHCP) antenna. The designed antenna is thereafter optimized by HFSS for lower voltage standing wave ratio (VSWR), higher polarization gain and higher beam width until all the design specifications are satisfied. With compact size, easy and low-cost fabrication and reliable performance, this antenna is quite promising for Beidou GPS application.
Date of Conference: 08-11 August 2016
Date Added to IEEE Xplore: 10 November 2016
ISBN Information: