Academic
Publications
A comparative study of a new GPS reduced-surface-wave antenna

A comparative study of a new GPS reduced-surface-wave antenna,10.1109/LAWP.2005.851105,IEEE Antennas and Wireless Propagation Letters,Lorena I. Basili

A comparative study of a new GPS reduced-surface-wave antenna   (Citations: 11)
BibTex | RIS | RefWorks Download
A new global positioning system (GPS) antenna design based on the reduced-surface-wave (RSW) microstrip antenna concept is introduced. In addition to retaining the advantages common to microstrip antennas, these new GPS antennas will be shown to provide comparable performance to the most commonly used GPS antennas, including choke-ring designs. The reduced horizon and backside levels, and good circular polarization characteristics indicate that this new antenna design is ideal for high-precision GPS applications.
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
    • ...Antenna designs reported in [2-4] discuss techniques of suppressing or eliminating surface waves to achieve high polarization purity and multipath rejection...

    Moazam Maqsoodet al. Effects of ground plane on the performance of multipath mitigating ant...

    • ... band (i.e., 1.575 GHz, the receiving frequency of the GPS) behaves nearly as a perfect electric conductor providing a 180 phase shift to the signal coming from the satellite, turning the right-handed circular polarization intotheunwantedleft-handedone.Afewpossibilitieshavebeen presented in the literature in order to suppress the surface wave contribution and increase the front-to-back ratio of high-precision GPS receiving modules [4], [5]...
    • ...In Section III, we present the design of a reduced surface wave circular patch antenna [5] with four feeds, whose improvedfront-to-back ratio isdueto adifferent physical mechanismratherthanto theemploymentof magneticinclusions.All the simulations are performed using CST Microwave Studio...
    • ...In order to obtain a design with reduced thickness, we moved to a different approach based on the reduction of the surface waves through a loop of metallic pins connecting the antenna to the ground plane, as presented in [5]...
    • ...The difference with the layout in [5] is that, instead of one single feed, we use four feeds “sequentially rotated” with respect to the patch surface, with a phase increase of 90 each time (Fig. 7). In this way, the front-to-back ratio of the original design in [5] is preserved,...
    • ...The difference with the layout in [5] is that, instead of one single feed, we use four feeds “sequentially rotated” with respect to the patch surface, with a phase increase of 90 each time (Fig. 7). In this way, the front-to-back ratio of the original design in [5] is preserved,...
    • ...both improved. We compare in the following the electric and radiating features of an antenna with one feed designed according to [5] and the same antenna with four feeds...
    • ...The geometrical and electrical parameters are the same of the antenna presented in [5], except for the ground plane, whose diameter is 20 cm...

    Filiberto Bilottiet al. Design of High-Performing Microstrip Receiving GPS Antennas With Multi...

    • ...Besides, to reduce the surface wave for a good radiation pattern, the uses of ring chokes and EBG structures have been presented in [9], [10]...

    Yu-Shin Wanget al. A Miniaturized Ground Edge Current Choke—Design, Measurement, and Appl...

    • ...Notable work in this direction is given by Jackson and his team in [9, 10]...

    Samir F. Mahmoudet al. A NOVEL MICROSTRIP PATCH ANTENNA WITH REDUCED SURFACE WAVE EXCITATION

    • ...In [4] a single-band (L1) GPS-RSW antenna design was presented and shown to provide comparable multipath performance to the commonly-used choke-ring design...
    • ...In order to make an RSW antenna resonant at the same frequency at which the surface-wave mode is not excited, the patch cavity is made resonant by introducing a circular short-circuit boundary condition concentric to the radiating edge, forming a shorted-annular-ring antenna [4]...
    • ...In order to realize the smallest-size RSW antenna for a given permittivity substrate and a given frequency, the short-circuit boundary is chosen to lie within the interior of the magnetic current ring (“a” in [4])...
    • ...The schematic for a SAR-RSW design can be found in [4]...
    • ...Unlike the RSW designs presented in [5]‐[7], for the designs presented in this paper (as in [4]) the short-circuited inner boundary condition is implemented using a circular array of vias...
    • ...Thus, while keeping in mind the simplicity and lightweight nature of an RSW antenna, the first step in evaluating the dual-band RSW design as a viable alternative to the dual-band choke-ring design is to directly compare the RHCP and LHCP radiation performances of the two structures. (In [4] a choke-...
    • ...Thus, unlike the single-band choke ring antenna shown in [4], the dual-band choke-ring antenna is fairly susceptible to receiving high-angle, odd-bounce multipath signals, which will significantly limit its performance...
    • ...While a short description of this antenna design can be found in [4], the key features to note here are that, like the RSW design, the pinwheel design can be used as a standalone element (not requiring the use of a choke-ring ground plane) and thereby also eliminates the weight and bulk associated with a choke-ring antenna...
    • ...As with the dual-band RSW design, the cross-polarization levels of radiation measured for the pinwheel antenna are significantly lower at both frequencies than those of the dual-band choke ring (particularly along the front-side of the antenna), but higher than those for the single-band choke ring antenna [4]...

    Lorena I. Basilioet al. A New Planar Dual-Band GPS Antenna Designed for Reduced Susceptibility...

Sort by: