Abstract ⎯ In this paper a printed dipole antenna and three slot antennas are designed to operate at 10 GHz for use in radar systems. A parametric study of each antenna and comparison between their radiation properties including return loss, bandwidth, directivity, efficiency and radiation patterns for 6-element linear array are introduced. Slot antennas show wider bandwidth, less coupling and ...

In the fifth-generation (5G) wireless communications, due to advantages such as wide range and low cost, sub-6 frequency band is widely used. It a challenge develop antennas for base stations which are band, high gain compact. this paper, center-fed collinear antenna array with compact size developed based on turnstile antenna. Non-uniform dipole has been used achieve broadband so that disadvan...

We consider the wave propagation through a doubly-periodic array of cavity cylinders in an isotropic elastic medium using the method of matched asymptotic expansions, based on the assumptions that the scatterer size is much smaller than both the wavelength and the array periodicity. There is no restriction on the wavelength relative to the array periodicity, and hence the method yields explicit...

In this paper, we present the formulation of a finite-element/boundary-integral method for the analysis of three-dimensional doubly periodic structures based on arbitrary nonorthogonal lattice configurations. The method starts from a functional description of the field problem where only a single unit cell of the array is considered. This unit cell is meshed with triangular prismatic volume ele...