BANDWIDTH CONSIDERATIONS FOR A MICROSTRIP REFLECTARRAY
نویسندگان
چکیده
منابع مشابه
Bandwidth Considerations for a Microstrip Reflectarray
The paper describes a theoretical investigation into a limited bandwidth operation of a microstrip reflectarray. Two main factors limiting the bandwidth are considered. One is related to the requirement of phase compensation to convert a spherical wavefront launched by a feed into a planar wavefront. The other one is linked to the limited phasing range of microstrip antenna elements. The two fa...
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The effects of substrate thickness on the performance of a microstrip reflectarray are investigated. These effects are analyzed in terms of specular reflection coefficients due to incident plane waves. Numerous plots for different substrate thicknesses are generated for discussion in this article.
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A microstrip reflectarray is a flat reflector antenna that can be mounted conformally onto a spacecraft’s outside structure without consuming a significant amount of spacecraft volume and mass. For large apertures (2 m or larger), the antenna’s reflecting surface, being flat, can be more easily and reliably deployed than a curved parabolic reflector. This article presents the study results on a...
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Regularly shaped compact microstrip antennas have a small size but their gain is insufficient for most applications. Therefore, a ring-shaped compact microstrip reflectarray with microstrip antenna feed has been proposed. Different configurations, namely, 1 × 3, 3 × 1, plus-shaped and 3 × 3 have been analyzed. The 3 × 3 configuration yields an optimum gain of 10. 8 dBi and a narrow beamwidth of...
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The reflectarray’s elements arrangement for generating an arbitrary phase distribution in the antenna aperture and thus a wide beamwidth of the far field pattern is presented. The desired phase delay of reflectarray elements, which duplicated the same radiating aperture as backscatters, is determined on the construction of the curvature of a shaped backscatter surface with the help of Snell's l...
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ژورنال
عنوان ژورنال: Progress In Electromagnetics Research B
سال: 2008
ISSN: 1937-6472
DOI: 10.2528/pierb07120405