A multibeam folded transmitarray antenna at Ku-band

Article Engineering, Electrical & Electronic

Wide-angle beam-scanning transmitarray antenna with low scan loss

Wenke Song et al.

Summary: This paper presents the design and verification of a mechanical beam-scanning transmitarray antenna with a wide scan coverage. The design features a wide-band element that provides a low transmission loss and a dual-beam phase matching method to reduce scan loss. The measured results demonstrate a low scan loss (<1.8 dB) and a wide scan coverage (+/- 40 degrees) for the transmitarray antenna, with low side lobe levels and a 1-dB gain bandwidth of 21%.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS (2023)

Add to Collection

Article Engineering, Electrical & Electronic

A Wide-Angle Coverage and Low Scan Loss Beam Steering Circularly Polarized Folded Reflectarray Antenna for Millimeter-Wave Applications

Zhen-Yu Yu et al.

Summary: In this article, a compact and low-profile beam steering circularly polarized folded reflectarray antenna with low scan loss is proposed and designed. The antenna achieves wide-angle coverage and low scan loss by employing a multibeam optimization method and small-size substrate integrated waveguide (SIW) cavity-backed slot antennas as the feeding sources. An incident-angle-insensitive circular polarizer is integrated to achieve circularly polarized radiation. Measurement results show that the designed antenna has a rather flat gain and good CP beams across a wide coverage range.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION (2022)

Add to Collection

Article Engineering, Electrical & Electronic

A Compact Multibeam Folded Transmitarray Antenna at Ku-Band

Guowei Li et al.

Summary: The letter presents a low-profile multibeam fully planar folded transmitarray antenna (FTA) based on the bifocal principle, which achieves high transmission efficiency and 3 b compensation phases. A new technique is proposed to improve the isolations among the feeding antennas, utilizing the multiplicity of the elements. Experimental results of a Ku-band multibeam FTA show a peak gain of 22.7 dBi and a scanning range of +/- 21 degrees, with a maximum feed isolation of 24 dB.

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS (2021)

Add to Collection

Article Engineering, Electrical & Electronic

A Compact Beamsteering Metasurface Lens Array Antenna With Low-Cost Phased Array

Ruolei Xu et al.

Summary: The proposed metasurface lens array fed by a phased array offers a compact solution for beamsteering applications with reduced thickness and cost. Beamsteering is achieved in two steps, first by switching the main beam direction over a large angular step, and then fine tuning with a low-cost phased array. The antenna design achieves a wide coverage range with high gain and low profile compared to conventional arrays and single-aperture lenses.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION (2021)

Add to Collection

Article Engineering, Electrical & Electronic