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An antenna array with modified compact feed has been designed with non-identical elements using cosine square amplitude distribution with the purpose of reducing the first side lobe level. The proposed feed network uses an overall area of 25.47% less than that of a similar array with conventional corporate feed network. Experimental results of this six element array validate the theoretical parameters.
Broadband Space fed design of compact square ring microstrip antennas fed by proximity fed rectangular microstrip antenna or by 3 × 3 gap-coupled array configurations of rectangular microstrip antennas, is proposed. Various space fed configurations of ring patch namely, single patch, 1 × 3 and 3 × 1 ring microstrip antennas, plus shaped and 3 × 3 spaced fed patch array configurations are studied....
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...
A space-fed array fed by a proximity fed microstrip antenna for a broader bandwidth is proposed. The 1 × 3, 3 × 1, plus-shaped and 3 × 3 configurations are studied. A parametric study for varying distances between the fed-patch and the array is done and the optimum results for each configuration have been presented. A bandwidth of 1.1 GHz and a gain of 14.6 dBi is obtained in 3 × 3 space fed configuration.
In this paper a single fed elliptical microstrip antenna to realize circular polarization in 1000 MHz frequency band is proposed. It yields axial ratio bandwidth of 10 MHz (∼1.2%). A sequentially rotated gap coupled configuration with a single parasitic patch along x axis is studied. Thereafter, gap coupled array along x and along y axis, i.e., a plus shaped array is studied to increase the ARBW....
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.
Microstrip reflectarray antenna consisting of rectangular microstrip antenna as the feed and an array consisting of edge shorted rectangular patches, is proposed. Four 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 patch and array of patches is presented. An optimum gain of around 8.8 dBi with...
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