Advances in reflectarrays and array lenses with electronic beam-forming capabilities are
enabling a host of new possibilities for these high-performance, low-cost antenna …

This paper highlights recent developments and challenges on beam steering characteristics
of reconfigurable transmitarray antennas. It introduces the operating principle of beam …

A compact 129-140 GHz Gilbert-cell mixer for up-conversion and 127-140 GHz image-
rejection (IR) resistive mixer for down-conversion are realized for a 140-GHz transceiver in …

In this paper, we present design and experimental results on reflectarrays at 120 GHz. The
offset-fed reflectarrays consist of conductor-backed coplanar patch antennas with phase …

Reflectarrays and tunable surfaces receive increasing attention for wavefront engineering in
the upper millimeter-wave range. As chip-based phase shifters can now be integrated with …

Increased throughput demands in emerging services drive a rapid shift from 5G to 6G,
posing interdisciplinary challenges in wireless communication stacks. This impacts network …

Predicting the far-field radiation pattern of reflectarrays (RAs) by means of semi-analytical
models is of great interest to save computationally expensive full-wave simulations …

A compact and 3-dB bandwidth of 118-145-GHz Gilbert-cell mixer for up-conversion and a 1-
dB bandwidth of 106-143-GHz image-rejection (IR) resistive mixer for down-conversion are …

We present results of experimental characterization of static 650-GHz reflectarrays. The
reflectarrays are based on 123-μm circular microstrip patch antennas with tuning stubs as …

This paper discusses the prospects of millimeter-wave beam steering antennas, such as
tuneable high-impedance surface, dielectric rod waveguide with an integrated phase shifter …