High-gain Transmitarray Antenna for Backhauling at D-band
Résumé
This paper presents the design, simulation and prototyping
of a 2-bit dual linearly-polarized transmitarray antenna
(TA) for 5G millimeter-wave point-to-point backhauling radio
links at D-band (130 - 174.8 GHz). The flat lens consists of a
square array with 1600 unit cells arranged on a 40×40 element
regular grid. This array is based on a printed circuit board
structure with only three metal layers and no via connection in
order to minimize the insertion loss, the fabrication complexity
and the overall cost of the system. The full-array has been
optimized using array theory; these results are compared to fullwave
simulations performed with Ansys HFSS. The 1-dB and
3-dB gain bandwidth equal 11.9% and 19.7% respectively, with
a peak gain of 34.1 dBi and aperture efficiency of 51% at the
center frequency. The unit cell configuration is fully symmetric
to operate in dual polarization operation.