Planar Dual-Band Wide-Scan Phased Array in X-Band

Abstract

The design of a planar dual-band wide-scan phased array is presented. The array uses novel dual-band comb-slotloaded patch elements supporting two separate bands with a frequency ratio of 1.4:1. The antenna maintains consistent radiation patterns and incorporates a feeding configuration providing good bandwidths in both bands. The design has been experimentally validated with an X-band planar 9×9 array. The array supports wide-angle scanning up to a maximum of 60º and 50º at the low and high frequency bands respectively.

Radiating Elements for Shared Aperture Tx/Rx Phased Arrays at K/Ka Band

“…The experimental validation of the scanning performance of the Rx and Tx antenna elements was carried out measuring their active radiation patterns and evaluating the scanning range as done in [11], [12]. The array prototype used to measure the active patterns is shown in Fig.…”

“…Small multiband arrays have been also designed for mobile telecommunications base-stations [10]. Wide-angle scanning was recently taken into account in [11], [12] designing dual-band radiating elements for X/Ku phased arrays with beam steering capability down to 60/50 degrees. In this paper, a new concept of compact dual-band phased array supporting wide-angle beam steering is presented.…”

Low-Profile on-Board Antenna With a Broad Beam Based on Three-Current Model

“…In [9] and [10], crossed microstrip radiators parallel to the metal ground were used to broaden the two-dimensional beam by offsetting the narrow beamwidth in the E plane with wide beamwidth in the H plane. The broad beams of the antennas in [9] and [10] can cover up to ±60 • .…”

“…The broad beams of the antennas in [9] and [10] can cover up to ±60 • . However, low elevation range cannot be covered with this kind of structures because antennas with electric radiators should have a small ground to realize the broad beam because of the boundary condition.…”

Two-port dual-band microstrip square-ring antenna for radar applications

“…The operational requirements for these arrays put high demands on the design of antenna element in terms of size, feeding technique, radiation pattern, coupling, etc. Many antenna elements have been proposed in the development of wideband [2][3][4][5] as well as dual-or multi-band designs in the literature [6][7][8][9] but mostly only with single port covering all bands. Using separate feeding ports for separate bands is however attractive option for some applications, including radar systems, and the aim of the work is to design two port dual-band antenna element enabling wide bandwidth and wideangle scanning performances of antenna arrays in both bands.…”