Compact Dual-Polarized Continuous Transverse Stub Array With 2-D Beam Scanning

Abstract

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A Novel Dual-Polarized Continuous Transverse Stub Antenna Based on Corrugated Waveguides—Part II: Experimental Demonstration

“…Capet and B. Palacin are with the Antenna Department, Centre National d'Études Spatiales (CNES), Toulouse 31401, France (e-mails: nicolas.capet@anywaves.fr; baptiste.palacin@cnes.fr). In this Part II, we report the experimental validation of the concept and prove a significant bandwidth enhancement over state-of-the-art polarization-agile CTS antennas [2]- [5]. The latter ones rely on cross-connected single-mode travelingwave arrays, each fed by an independent beamformer, and are mainly suited for narrowband applications.…”

X‐band, mechanically‐beam‐steerable lens antenna exploiting the Risley prism concept

“…Recently, mechanical beam‐steerable antenna systems based on the Risley prism concept have attracted attention for their simplicity and good beam scanning performance [16–19]. A Risley‐prism‐based beam‐steering system typically consists of a pair of PSSs, which replace the two dielectric wedges in the original Risley prism concept [20], illuminated by a feed antenna.…”

“…The relative rotational displacement of two PSSs provides beam steering in both azimuth and elevation directions in the upper hemisphere of the outgoing aperture. The design concept has been demonstrated for mechanical beam‐steering systems working at X‐band with a scan range [16], at Ka‐band with a scan range [17], at Ku‐band with a scan range [18], and at X‐band with a scan range [19]. However, these works did not address the question of how to determine the best distance between the two PSSs in the design procedure for optimising the beam scanning performance and no bandwidth results were presented in [16–19].…”

Low-Profile Beam Steerable Patch Array With SIW Feeding Network

“…This technique excludes the requirements of a radiating aperture and ensues in leveraging array with ±30 • and frequency independent beam directions. Although several types of CTS arrays have been implemented to target specific applications [22], their metallic waveguide structures are massive and still require high power mechanical control systems to realize scanning in azimuth and elevation planes. The mechanical control system also makes the whole antenna system bulky and consumes more power that is not feasible for low-cost applications.…”