Active Admittance and Impedance of Hexagonally Sampled Dipole and Slot Connected Arrays

Analytical formulations of the active admittance and impedance of connected arrays based on dipole and slot antennas, respectively, when elements are arranged in a hexagonal lattice, are presented. Different canonical dielectric layers stratifications are considered. The formulations is based on multi-layer Green’s function spectral...

Connected array of coherent photoconductive pulsed sources to generate mw average power in the submillimeter wavelength band

Characterization of a Dual-Polarized Connected-Dipole Array for Ku-Band Mobile Terminals

In this paper, we present the characterization of a Ku-band connected-dipole array for mobile Satcom application. The prototype array consists of 2 × 256 dipole radiators arranged in a square grid, to form 16 × 16 dual-polarized cells. It has been designed to operate over a wideband ranging from 10.7 to 14.5 GHz (30%), accommodating in a single...

Ku-Band Dual-Polarized Array of Connected Dipoles for Satcom Terminals: Theory and Hardware Validation

We present a Ku-band dual-polarized phased array demonstrator for satellite communications. The prototype array is composed by 512 connected-dipole elements, 16x16 for each polarization, arranged in an egg-crate configuration. A loop-shaped feed structure is used to maintain good polarization purity for beam scanning up to 60 degrees in any...

A 3- to 5-GHz Wideband Array of Connected Dipoles With Low Cross Polarization and Wide-Scan Capability

A wideband, wide-scan phased array of connected dipoles has been designed and fabricated. Measured results from a 7 7 prototype demonstrator are presented for experimental validation. In order to avoid common-mode resonances that typically affect this type of array, loop-shaped transformers are included in the feed network. The common-mode...

Analytical Description and Design of Printed Dipole Arrays for Wideband Wide-Scan Applications

Wideband arrays of printed dipoles with inter-element loads are investigated. A closed-form expression for the active input impedance of the array element is derived with a spectral domain approach. The procedure is based on an extension of the Green's function formulation for arrays of connected dipoles to the case of dipoles coupled via loads....

Truncation effects in connected arrays: Analytical models to describe the edge-induced wave phenomena

This paper presents a Green's function based procedure to assess edge effects in finite wideband connected arrays. Truncation effects are more severe in broadband arrays, since the inter-element mutual coupling facilitates the propagation of edge-born waves that can become dominant over large portions of the arrays. As a consequence, the overall...