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Broadband Spaced fed array fed using stacked configuration of E-shaped microstrip antenna fed by E-shaped microstrip antenna is proposed. The modified feeding structure in space fed array is used as in higher order arrays, peripheral patches are not equally fed using single microstrip patch. The fed 3 × 3 stacked E-shaped patch array yields an optimum gain of nearly 9 dBi with VSWR bandwidth of around...
Higher order space-fed arrays have limited gain due to unequal excitation of patches when fed by a single microstrip patch. Hence, a broadband space-fed array with a stacked microstrip array as the feed element is proposed. An array of rectangular microstrip antennas is placed on top of a co-axially fed broadband E-shaped patch antenna to realize a multi-layer stacked microstrip array. First, various...
A dual-band stub-loaded microstrip reflectarray antenna with microstrip antenna feed is proposed. The 1 × 3, 3 × 1 and plus-shaped reflectarrays have been studied. A parametric study for varying distances between feed patch and the array has also been done. In dual bands, an optimum gain of more than 8 dBi is obtained in plus shaped array configuration.
Broadband reflectarray microstrip antenna with an array and feed element consisting of E-shaped patches is proposed. The reflect array configurations namely, 1 × 3, 3 × 1, plus-shaped and 3 × 3 arrays have been studied. A parametric study for varying distances between the fed E-shaped patch and array of E-shaped patches for varying slot dimensions is presented. The maximum gain of more than 12 dBi...
Broadband U-slot cut rectangular microstrip reflectarray antenna with a U-slot cut rectangular microstrip antenna as a feed is proposed. The 1 × 3, 3 × 1, plus-shaped and 3 × 3 patch arrays have been studied. A parametric study for varying distances between fed patch and the array and for varying U-slot dimensions in reflect array patches is presented. An optimum gain of nearly 11 dBi with bandwidth...
A circularly polarized microstrip reflectarray antenna with a microstrip antenna feed and patches having variable rotation angles is proposed. A parametric study for three different configurations, namely a single patch, 1 × 3 and 3 × 1 array is presented. The plus-shaped and 3 × 3 array configurations have also been studied. It is observed that an optimum axial ratio bandwidth of around 45 MHz is...
Microstrip Reflectarray with patches of variable stub lengths to realize progressive phase shift and dual polarization is proposed. Three different configurations namely, 1 × 3, 3 × 1 and five elementsarrays arranged in two co-ordinate axes are proposed. The beam width in allthe configurations in E and H-plane is around 21° with a gain of more than 11 dBi in five element crossed array.
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