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A 5-element microstrip patch array with aperture coupling is presented for 35 GHz applications. To decrease the transmission loss, the feed network is realized by ridge gap waveguide. The excitation of the upper patches comes from the ridge gap waveguide layer through a coupling aperture, which locates in the ground plane of the substrate. A starlike array is designed to take advantage of the spurious...
A printed log-periodic dipole antenna (PLDPA) with balanced feed structure is proposed. The traditional feeding structure using a single coaxial cable and feed lines with equal width will lead to an unbalanced current distribution, thus, the radiation pattern performances a frequency dependent deflection status. In this paper, we have modified the width of two feed lines to compensate the effect of...
For the cosecant square beam pattern application of an 8-element antenna array, we designed a 8-way non-equal power-divider based on Wilkinson scheme. An improved suspended stripline(SSL) structure is proposed and analyzed here, by using which as planar transmission line, the designed power-divider has good performance in the insertion-loss, and the excitations for output ports agree well with the...
A rigorous and effective analysis of finite conformal microstrip antenna array of arbitrary shape is presented using volume-surface integral equation (VSIE) formulation and Precorrected-fast fourier transform method (P-FFT) method where combined conducting and dielectric materials are considered. Three typical conformal arrays including cylindrical, spherical and conical arrays with thin dielectric...
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