Over the last years, a great number of substrate integrated circuits has been developed.
These new circuits are a compromise between the advantages of classical waveguide …

A multibeam antenna system fed by a compact Rotman lens is presented in multilayer
substrate integrated waveguide (SIW) technology. The lens is implemented in two layers …

One of the fundamental problems of modern digital telecommunications is the economy of
digital information and frequency resources, which are highly limited. The introduction of …

We describe the design of a radial line slot array antenna with a shaped and focused near
field. The antenna is designed in such a way to control the side lobe level and beamwidth of …

In this communication, we present a theoretical analysis, design, and fabrication of a limited-
diffractive planar Bessel beam launcher, that exhibits a zeroth-order Bessel profile in the …

In this paper, we prove experimentally that nondiffractive Bessel beams can be generated by
using inward cylindrical traveling wave aperture distributions. An azimuthally invariant …

A novel compact monopulse cavity-backed substrate integrated waveguide (SIW) antenna is
proposed. The antenna consists of an array of four circularly polarized (CP) cavity-backed …

In this paper the focusing capability of a radiating aperture implementing an inward
cylindrical traveling wave tangential electric field distribution directed along a fixed …

A multibeam pillbox antenna system incorporating monopulse phase comparison technique
is proposed in the 24-GHz band. This low-profile antenna architecture combines the …

The manipulation of the near-field (NF) is a challenging topic in electromagnetics, carrying
essential importance for several applications. In this paper, we develop an algorithm …