This paper describes our contribution in the ANR project called GELOCOM, dedicated to the emergency localization of cellular phones. This contribution takes place in the field of antennas, with the development of quad-band systems: a circular array of six elements with separated outputs for the receiving part. In this paper, we present the design and the experimental characterization of quad-band printed dipole antenna. The antenna was studied with the software CST MSW.
This paper describes the design of a compact and wide angular circularly polarized low-profile EBG antenna. Except at 3.7 GHz and forθlower than −25° in the plane equals to 0°, the modelized structure provides an axial ratio lower than 3 dB, over a wide angular aperture of 60° and over a bandwidth of 5.3% ([3.7 GHz–3.9 GHz]). It has a very low height of 11.9 mm (/7 at 3.8 GHz). A prototype has been manufactured, and the measured performances, considering the tolerance of the measurement base (±0.5 dB), are quite similar to the simulated ones.
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