  In this paper, a two-dimensional cylindrical Lens antenna based on the
parallel plate technique is designed. It supports beam-steering capability of
58 degree at 28 GHz. The antenna is composed of low loss rectangular waveguide
antennas, which are positioned around a homogeneous cylindrical Teflon lens in
the air region of two conducting parallel plates. The Beam scanning can be
achieved by switching between the antenna elements. The main advantages of our
design include its relative simplicity, ease of fabrication, and high-power
handling capability. Compared to previous works including a curvature
optimization for the plate separation of the parallel plates, the proposed
antenna has a constant distance between plates. At the 28 GHz, the maximum
simulated gain value is about 19 dB. Furthermore, the designed antenna only
deviates about 0.4 dB over the 58 degree scan range.
