Design of an L-Band Cross-Dipole Phased Array Feed for FAST

Radar Cross Section of Phased Array with Parallel Feed Network

The scattering characteristics of a phased array depends on its feed network. The variation of scattered fields within the feed network affects the antenna mode scattering. In this paper, an attempt is made to determine the radar cross section (RCS) of a planar array with parallel-feed network. The scattered field of the array is obtained by following the path of the signals through the antenna...

A New Design of Log-Periodic Dipole Array (LPDA) Antenna

This paper presents a new approach for design of the log-periodic dipole array antenna (LPDA) based on using of different design parameters in the LPDA elements to control the antenna behavior. In the proposed procedure, the design parameters can control the value of forward gain over the operating frequency range, and also adjust the gain flatness. Furthermore, this design procedure can decrea...

Design of an Aperture Phased Array System for the SKA

Aperture phased arrays operating up to 1 GHz are highly flexible collector systems, uniquely capable of performing an HI survey of a billion galaxies and observations of the Epoch of Reionisation, two of the Key Science Programmes for the Square Kilometer Array, SKA. Such high performance arrays are only becoming feasible in the timescales of the SKA due to technological advances in array desig...

Ka-band phased array system characterization

A Polarimetric Phased Array Antenna for E-SAR in L-Band

The design of a new L-band antenna for DLR’s airborne synthetic aperture radar system (E-/F-SAR) is presented. Beside operations in L-band new components for a system upgrade were developed. These components are introduced. Special interest of this paper is the development of the dual-polarized L-Band antenna with enhanced bandwidth of 150MHz. The antenna feed network is equipped with 2bit hybr...